CN102165712A - 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 the wireless communication system

Technical field

The present invention relates to the method for notice antenna port quantity in 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 signals (CRS) can apply to coherent demodulation and the channel measurement that portable terminal is suitable in channel measurement or the cellular-specific sub-district.In some wireless communication system, portable terminal also can refer to subscriber equipment (UE).So-called antenna port and a kind of universal method that realizes antenna port are to set up the mapping relations that antenna port and physical transmit antenna are only seen in each CRS definition cellular-specific sub-district.

The reference signal of different antennae port (RS) to each other should be orthogonal thereto, thereby guarantee interference-free identification respective propagation channel coefficients (just each transmitting antenna is to the propagation channel between each reception antenna).Different cellular cells has different RS usually, can farthest reduce the interference between the RS in the different cellular cells like this.Do not losing under the general prerequisite, can be in the entire chapter document according to CRS or the specific CRS definition antenna port of cellular cell.The specific CRS in sub-district means that these signals can be used to measure the channel of each antenna port for a plurality of UE in the cellular network.Antenna port also can be that the user is specific, and promptly specific single UE can use port to measure and/or demodulation.

CRS goes up emission at the special-purpose reserved resource of cellular cell such as temporal frequency resource element (RE), sign indicating number or the like.And data can not launched on this reserved resource, can avoid the interference between the RS like this, and then are obstructed when preventing to estimate dissemination channel coefficient on the antenna port.

For rationally utilizing the standard traffic between DL CRS and execution and the base station such as eNB, the antenna port quantity that is used for down channel measurement and/or downlink is for the considerable notice information of subscriber equipment.After the antenna port usage quantity information, UE will be known emission mode and data transmission and the suitable concrete resource of using in each physical channel of DLCRS in the UE acquisition cellular cell.These data that all are very important information is avoided receiving are punched by the CRS condition, because if a UE does not know the communication resource of CRS, will suppose that all resources that receive comprise that the data on the resource of CRS all are to receive data, reduce the receptivity of data like this with regard to the interference owing to CRS.

In addition, the number of knowing CRS uses a plurality of channels of CRS and detects physical channel or the like also very important for measurement.In the 8th edition (Rel-8) standard of Long Term Evolution (LTE), the antenna port quantity information is embedded in Physical Broadcast Channel (PBCH) and goes up in the signal of emission.After the success of cellular network search procedure, UE will realize with the temporal frequency of cellular cell synchronous, and obtain the Cell Identity CI (ID) of this cellular cell; UE begins to detect PBCH with the information of obtaining specific cell and the quantity of antenna port afterwards.

In LTE Rel-8 standard, support three kinds of CRS types that the sub-district is specific, be defined as one, two and four antenna ports (3GPP TS 36.211 v8.4.0).Antenna port quantity in sub-district is determining eNB to support the maximum number of plies of multiple-input and multiple-output (MIMO) emission layer.For example: if four antenna ports are arranged in the cellular cell, the multipotency of eNB is supported the emission of four MIMO layers.The antenna port quantity information can be embedded in the signal of launching on PBCH, by using different Cyclic Redundancy Check masks to be used to indicate the quantity of antenna port.When UE is not known the information of antenna port usage quantity in the cellular cell in advance (the CRC mask that the transmission block of PBCH uses), UE just needs carry out blind Detecting to this category information, this means the mask that UE need detect all possible CRC mask and select wherein may to match most with the PBCH signal that is received.

The operation that the antenna port quantity information is embedded among the PBCH on reflector and carries out corresponding blind Detecting at PBCH on the receiver that LTE Rel-8 system is suitable for is described and can be seen below.

The first, on reflector, whole transmission blocks position a of PBCH ₀, a ₁... a _A-1Be used to calculate CRC check bit P ₀, p ₁... p _L-1, wherein A is the size (being the quantity of information bit) of transmission block, L is the quantity that is set to 16 CRC check bit in the LTE Rel-8 standard.The second, according to the antenna port configuration of cellular cell, the CRC check bit is 16 sequence by a length Scrambling, this sequence is corresponding with antenna port quantity n, and n=1,2 or 4.After the scrambling, the CRC check bit of band mask will be c ₀, c ₁... c ₁₅, wherein

I=0,1 ..., 15.The table 1 that meets the visible below of mapping relations of LTE standard between three scramble sequence and the antenna port quantity.

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

Antenna port quantity	The 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>

The CRC check bit of band mask is attached to the afterbody of PBCH transmission block position, treats as a to obtain ₀, a ₁... a _A-1, c ₀, c ₁..., c ₁₅The information bit of being launched.

At last, to information bit a ₀, a ₁... a _A-1, c ₀, c ₁..., c ₁₅Carry out sequence of operations such as chnnel coding, rate-matched, modulation and resource mapping.

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

On receiver, search the UE execution of the respective opposed operation of antenna port quantity by cellular network service.Because UE is known the possibility hypothesis (promptly, two or four antenna ports) of three kinds of relevant antenna port quantity, UE can carry out blind Detecting to PBCH, specifically can see Table 1.In blind detection process, SFBC or SFBC+FSTD decoding, demodulation, channel-decoding and CRC detect and are whole standard operations, therefore they are not described in addition, but can explain the operation of removing the CRC mask in the information announcing below.

Suppose that channel-decoding is output as

Wherein back 16 information bits

Be the CRC check bit that is subjected to the CRC mask code sequence scrambling corresponding with the antenna port quantity information, concrete visible above the description.When PBCH is carried out blind Detecting, can adopt a CRC scrambler that the CRC check bit is carried out descrambling (promptly removing the CRC mask), 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 of supposing is identical with the actual CRC mask that uses on the reflector, aforesaid operations will remove the CRC mask that is embedded in the CRC check bit fully so, and the probability that correct execution detects will increase.

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

In addition, for satisfying the requirement of LTE-A backward compatibility, should guarantee that the LTE-A sub-district can also serve LTE UE.For LTE UE is moved in the LTE-A system, the antenna port that defines among the LTE also should be supported in the LTE-A system, promptly also should have n LTE CRS, wherein n=1,2 or 4 in the LTE-A system; The same with the effect that LTE CRS brings into play in the LTE system, they can be LTE UE and are used for coherent demodulation and channel measurement, and LTE-AUE also can utilize this class LTE CRS that the control channel such as PBCH and downlink physical control channel (PDCCH) is carried out demodulation simultaneously.

Therefore, in the LTE-A system, have some LTE antenna ports and be used to launch LTE data/control and/or LTE-A control information; In addition, the antenna port of going back definable some other only is used for the LTE-A data transmission.For all antenna ports in the LTE-A system, the antenna port of other brand-new definition can refer to the LTE-A antenna port, and the quantity of LTE-A antenna port can be zero.Therefore need the communication system that to serve LTE UE and LTE-AUE.In addition, may be different based on the antenna port quantity of LTE and LTE-A in the LTE-A cellular network, relevant issues are how to represent that the signal that the LTE-A antenna port exists is emitted to LTE-AUE, to realize transparent reception LTE antenna port quantity.

Compare the antenna port (being n=1,2 or 4) of LTE CRS definition, LTE-A eNB may need to enable additional C RS (antenna port) and be used for measuring and/or demodulation.LTE-AUE may need to set up eight antenna ports (CRS) at most among the Rel-10.These CRS that set up refer to channel condition information-RS (CSI-RS).Another problem that causes thus is how LTE-A antenna port quantity or CSI-RS number signal to be emitted to LTE-AUE, and is transparent to LTE UE to realize.

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

Summary of the invention

One of purpose of the present invention is to provide a kind of notice transmitting node that is applicable to comprise the method for antenna port quantity information.Second purpose of the present invention is to provide a kind of method that solves above-mentioned backward compatibility issues.Another object of the present invention is to provide a kind of solution that helps easy enforcement in wireless communication system, in order to address the above problem.

According to technical characterictic of the present invention, the method that above-mentioned purpose can be suitable for by the signaling quantity of notice antenna port that transmitting node comprises in wireless communication system realizes.According to said method, the information that signal of communication is carrying at least one antenna port of transmitting node is sent out, and wherein the information of relevant at least one antenna port is divided and is distributed at least two predetermined parts in the described signal of communication.

The different embodiments of said method in wireless communication system have disclosed in appended claims 2-14.

According to another technical characterictic of the present invention, above-mentioned purpose can notify its method that quantity was suitable for that comprises antenna port to realize by above-mentioned transmitting node in wireless communication system.According to said method, signal of communication that is carrying at least one antenna port information of described transmitting node of above-mentioned transmitting node emission, wherein the information of relevant at least one antenna port is divided and is distributed at least two predetermined parts in the described signal of communication.

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

According to another technical characterictic of the present invention, above-mentioned purpose can realize by being applicable to the method that receives the signal of the signaling quantity of representing antenna port that transmitting node comprises in the receiving node of wireless communication system.According to said method, at least one antenna port that above-mentioned receiving node is received in described transmitting node is uploaded the signal of communication of transmission information, wherein has at least information via on one to divide and be distributed at least two predefined parts emissions at above-mentioned signal of communication in this signal of communication in the relevant described antenna port.

According to the embodiment of above-mentioned technical characterictic of the present invention, above-mentioned wireless communication system is meant the LTE-A communication system, and above-mentioned receiving node is meant the portable terminal such as UE.

According to another technical characterictic of the present invention, the transmitting node that above-mentioned purpose can be suitable for by the signaling quantity of notice antenna port that transmitting node comprises is realized.Described transmitting node is equipped to provides and sends the information that a signal of communication is carrying at least one antenna port of transmitting node in the described wireless communication system, and wherein the information of relevant at least one antenna port is divided and is distributed at least two predetermined parts in the described signal of communication.

According to another technical characterictic of the present invention, can realize that above-mentioned purpose is to receive the signal that the expression transmitting node is comprised antenna port quantity by receiving node.Described receiving node is equipped to the signal of communication that receives and handle at least one antenna port information that is carrying described transmitting node, and wherein the information of relevant at least one antenna port is divided and is distributed at least two predetermined parts in the described signal of communication.

Can dispose transmitting node and receiving node according to the different embodiment of said method in addition.

The invention provides a kind of alternative method of notifying the signaling quantity of antenna port that transmitting node comprises.The present invention also help facilitate LTE-AUE to obtain transmitting node (relevant configuration information of) antenna port for example, eNB or via node, this information is transparent to LTE UE simultaneously, and LTE UE is had no effect.Therefore, the present invention also provides the solution that above-mentioned backward compatibility issues is suitable for.

Below will mention its other advantage and application in the detailed description that the present invention is made.

Description of drawings

Accompanying drawing is used to illustrate and explain the present invention, wherein:

Fig. 1 has shown the process of among the LTE PBCH being carried out blind Detecting;

Fig. 2 has shown the process of among the LTEAdvanced (LTE-A) PBCH being carried out blind Detecting;

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

Fig. 4 has shown 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 in radio communication the notice transmitting node comprise the method for the relevant 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 of laying in the LTE-A system can be divided into I class and II category information.The I category information shows the quantity of LTE antenna port, and the II category information shows the quantity of the antenna port of LTE-A CSI-RS definition, or shows the sum of the antenna port of LTE CRS and LTE-A CSI-RS definition.

Therefore, I class and II category information can show the information of dissimilar antenna ports.In the LTE-A system, LTEUE only need receive the I category information to know the accurate quantity of LTE antenna port, utilize again the antenna port information obtain carry out with LTE-A eNB between communicate by letter; And LTE-AUE can receive I class and II category information to satisfy various objectives, and promptly the I category information is used for the one or more control channels of demodulation, and the II category information is used for channel measurement to support high-rise transmission.

Therefore, presents has been introduced a kind of method of notifying the signaling quantity of antenna port that transmitting node comprises in wireless communication system.According to said method, the emission signal of communication is carrying the information of at least one antenna port quantity of transmitting node.At least two predefined parts of above-mentioned signal of communication can be divided and be distributed in to the relevant information of the quantity of at least a antenna port.

In the present invention, signal of communication is meant one group of bit launching at least one physical channel, and the antenna port quantity information is divided into two parts at least, and is distributed in the different piece of one group of bit of described signal of communication.Under this mode, antenna port information can be embedded in the signal of communication, and promptly signal of communication is carrying the transmit antenna port information.LTE UE needs a part of identification communication signal at least, and to have another part in the signal of communication at least be transparent to LTE UE, these two parts first and second predetermined portions of corresponding signals of communication respectively in one of embodiments of the invention.

Be the backward compatibility of in the LTE-A cellular network, supporting LTE UE and the transparent operation of realizing LTE UE, first predetermined portions of I category information respective antenna port number relevant information, it can be transmitted by being useful in the LTE cellular cell the same principle 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 is carried out scrambling by utilizing the CRC mask code sequence corresponding with the I category information to the CRC bit that PBCH goes up broadcast channel (BCH) transmission block of emission, can utilize four LTE antenna port emission PBCH at most, comprising the corresponding signal of communication of BCH transmission block of 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 that is used to launch PBCH, and this quantity depends on the configuration of LTE antenna port in the LTE-A cellular network.

After detecting the I category information, LTE UE will continue operation according to the quantity of the antenna port that identifies in the cellular cell (one, two or three).Yet, because LTE-A UE need determine that the antenna port quantity of LTE-A CSI-RS definition is to carry out channel measurement, LTE-AUE, so LTE-AUE also need translate the II category information of respective antenna port number information second portion earlier, obtain the accurate information of laying antenna port quantity that LTE-AUE may use again.Therefore, only there is LTE-AUE can detect the II category information.

In LTE Rel-8 system, the size of the BCH transmission block of the last emission of PBCH is 24 bits, and has 10 bit spare bits to keep for following communication system to be suitable for.This 10 bit spare bits is set to 0, and LTE UE can ignore this 10 bit spare bits to guarantee the back to/forward compatibility, and promptly LTEUE can not resolve 10 bit spare bits, and irrelevant with the specifying information in this 10 bit spare bits.Therefore, 1 or a plurality of bit in this 10 bit spare bits, perhaps indicate the II category information by the represented state of 10 bits, to resolve the information bit on LTE UE PBCH detection and the BCH and not have any influence, wherein the second predefine part of 1 in 10 bit spare bits or the corresponding signals of communication of individual a plurality of bit in the BCH transmission block.Required bit number or the state number of quantity about the antenna port that is used to indicate LTE-A CSI-RS definition specifically depends on the definition to LTE-ACSI-RS.LTE-AUE successfully detects PBCH, i.e. after CRC detection is errorless, can obtain the I category information, and LTE-A UE can then detect PBCH and go up the content of the BCH transmission block of launching to obtain the II category information afterwards.That is to say that if LTE-A UE correctly detects PBCH, they can know the accurate quantity of antenna port.Under this mode, LTE UE and LTE-A UE can obtain their required separately antenna port informations, and this Signalling method do not have any influence to LTE UE performance, thereby are transparent to LTE UE, can satisfy the requirement of backward compatibility.

Hereinafter can disclose a plurality of embodiment of the present invention from the definition of LTE-A CSI-RS and two aspects that concern between LTE CRS and the LTE-A CSI-RS.

Embodiment A

The maximum quantity of the layer of LTE-A UE being supported as LTE-A eNB (base station) is 8, and the quantity of LTE-A antenna port will be 8.Eight LTE-A antenna ports through be used for channel measurement or be used for channel measurement and the LTE-ACSI-RS of demodulation definition after can support emission on eight layers.In addition, these 8 LTE-A CSI-RS are independent of LTE CRS, and the LTE antenna port quantity of configurable LTE CRS definition.

Can the LTE antenna port quantity in the LTE-A cellular network be configured to one, two or four according to the actual conditions of system.For example, the initial period of LTE-A system need be supported a plurality of LTE UE, thereby four LTE antenna ports of possible configuration are to support LTE UE; Along with phylogeny or service time pass, will have increasing LTE-A UE in the system and replace LTE UE, therefore can avoid disposing in the case four LTE antenna ports and send pilot tone to reduce.

At LTE-A eNB seating surface to LTE-AUE, nearly during the emission on four layers, LTE-A antenna port quantity can for four and LTE antenna port quantity also be 4.In this embodiment, undefined any new LTE-A CSI-RS, and also LTE-AUE will use 4 LTE antenna ports to carry out channel measurement and demodulation.

If LTE-A eNB is 1 or 2 to the numbers of plies that LTE-AUE supports at most, just with support maximum four layers of transmission the antenna port configuration similar, i.e. other new LTE-A CSI-RS of nothing except the LTE antenna port.Antenna port configuration general introduction can see Table 1 among this embodiment.

Antenna port configuration among the table 1:LTE-A

According to table 1, can use a bit or two states to indicate the II category information, i.e. the antenna port quantity of LTE-A CSI RS definition is 0 or 8.For example, the II category information is the information that takies a bit, wherein ' 0 ' represents no any LTE-A CSI-RS in the LTE-A cellular cell, LTE-A UE should use the LTE antenna port to carry out channel measurement and demodulation, ' 1 ' expression also has 8 LTE-A CSI-RS except that the LTE CRS quantity of I category information indication.

Table 1.1: II category information coding

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

Embodiment B

When LTE-A eNB is 1,2 or 4 to maximum numbers of plies that LTE-AUE supports, the 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 quantity can be assumed to be n, n=1,2 or 4 wherein, and the LTE-A CSI-RS that newly establishes is 8-n.LTE-A UE is used in combination LTE CRS and LTE-A CSI-RS carries out channel measurement, i.e. the quantity n of the quantity 8-n of CSI-RS and LTE CRS.The possibility configuration general introduction of antenna port can see Table 2.

Antenna port configuration among the table 2:LTE-A

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

Table 2.1: II category information position coding

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

Scheme 2: only have a bit to be used to indicate the II category information.If detected LTE antenna port quantity is n, LTE-A antenna port quantity only has two values, promptly 0 and 8-n, and the visible below of the antenna port quantity table 2.2 of a concrete indication of bit.

Table 2.2: II category information position coding

The II category information

The antenna port quantity of LTE-A CSI-RS definition

‘1’	8-n
		‘0’	0

Embodiment C

Suppose that the number of plies maximum that LTE-A UE on the LTE-A eNB supports can be N, and the LTE antenna port quantity that has disposed is M, wherein M＜=N and M=1,2 or 4.When M＜N, LTE-A CSI-RS will be N, otherwise it will equal zero.The general introduction of this type of antenna port configuration can see Table 3.

Antenna port configuration among the table 3:LTE-A

If the antenna port quantity of LTE-CSI RS definition is 0, mean that then LTE-A UE will use LTE antenna port measured channel to support the emission on the multilayer.Can use the dibit information of listing in the table 3.1 of below that the II category information is encoded.

Table 3.1: II category information position coding

These three kinds of situations represent that respectively LTE antenna port quantity is 1,2 and 4.Symbol ' * ' expression disarmed state in the table 3.1.

Embodiment D

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

Antenna port configuration among the table 4:LTE-A

When maximum numbers of plies of LTE-A UE being supported as LTE-A eNB equal LTE antenna port quantity, will can not define LTE-A CSI, and LTE-A UE will use the LTE antenna port to carry out channel measurement and demodulation.Otherwise, defining the quantity of extra LTE-ACSI, LTE-AUE can be used in combination LTE CRS and LTE-A CSI carries out channel measurement.In this embodiment, the LTE-A antenna port comprises the antenna port of LTE antenna port and LTE-ACSI definition.Can be according to shown in the table 4.1 the II category information being encoded.

Table 4.1: II category information position coding

The parsing meeting that should note II category information among the different embodiment is different, and the quantity of the LTE antenna port that has promptly disposed can be different.LTE-AUE will resolve the II category information according to detected I category information.

Embodiment E

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

Antenna port configuration among the table 5:LTE-A

Can use two bits or four kinds of states that the II category information is encoded in this embodiment.In this embodiment, we suppose that four kinds of states of 10 bit spare bits are used to represent the II category information among the PBCH.

Table 5.1: II category information position coding

Embodiment F

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

Configurable LTE antenna port quantity when eight LTE-A CSI are arranged only.

Under the situation for any amount of LTE-A CSI, LTE antenna port quantity is configurable.

Embodiment F 1

The antenna port that the II category information of 1 bit can be used for listing in the expression table 6.1 disposes.

Table 6.1: configurable LTE antenna port quantity when eight LTE-A CSI-RS are arranged only

Table 6.1.1: II category information position coding

Embodiment F 2

Table 6.2: configurable LTE antenna port quantity

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

Table 6.2.1: II category information position coding

Embodiment G

When the number of plies that LTE-A eNB supports at most LTE-A UE is 1 (or 2), will there be (or two a) LTE antenna port to be used for LTE-A channel measurement and demodulation, and can define new LTE CSI-RS; The LTE-A CSI-RS that the quantity of LTE antenna port is configurable and new can define according to shown in the following table.

Antenna port configuration among the table 7:LTE-A

In this embodiment, three kinds of states are enough to represent the II category information, specifically can see Table 7.1.

Table 7.1: II category information position coding

The II category information	The antenna port quantity of LTE-A CSI-RS definition
		‘0000000001’	0

‘0000000010’	4
		‘0000000011’	8

Below as seen the relevant embodiment how in the LTE-A communication system quantity information execution of antenna port that transmitting node comprises to be launched described, wherein antenna port configuration information was launched through LTE-APBCH.Visible Fig. 2 of diagram to the blind Detecting of LTE-APBCH.

The LTE-APBCH emission process may further comprise the steps:

Use LTE-A PBCHa ₀, a ₁, a _A-1Whole transmission blocks (the antenna port quantity of wherein representing LTE-A CSI-RS definition) with the corresponding one or more explicit bits of II category information calculate CRC check position p ₀, p ₁... p _L-1, wherein A and L are respectively the values of transmission block size and CRC position size.

Use the CRC mask corresponding with the I category information of relevant LTE antenna port

To CRC check position p ₀, p ₁... p _L-1Carry out scrambling, promptly

I=0,1 ..., 15.

CRCc with 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 ₁₅Carry out chnnel coding, rate-matched and modulation.

According to LTE antenna port quantity the modulation symbol such as SFBC or SFBC+FSTD is carried out space encoding.

On some LTE antenna ports, the output of above step maps to the reservation of resource that PBCH is suitable for.

According to another embodiment of the invention, except emission II category information in the BCH transmission block, the II category information also can be launched waiting on other channels such as Physical Downlink Shared Channel (PDSCH).Dynamic Broadcast Channel (DBCH) is that another kind can be mapped to the broadcast transmission channel on the PDSCH of physical layer.This type of PDSCH can launch in predefined subframe, and all masters in the cellular network will receive this type of PDSCH to obtain the more multisystem information except that PBCH goes up the broadcast message of transmitting with UE.In the LTE-A system, some new information bits can define in DBCH, and this is only effective to LTE-A UE, and for example, a plurality of information bits among the DBCH are used to indicate the antenna port quantity of LTE-A CSI-RS definition.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, first and second predefines of this signal of communication partly distinguish scrambling among the corresponding BCH the CRC position and the information bit of DBCH transmission block.

LTE-A UE obtains before the LTE-A antenna port, only can know LTE antenna port quantity by detecting PBCH.For detection comprises the PDSCH that the DBCH of II category information is mapped to, this PDSCH needs launch on the LTE of the configuration antenna port of I category information indication, otherwise LTE-A UE can't detect PDSCH.Therefore, detailed process is that LTE-A UE at first detects PBCH to know the quantity of LTE antenna port, goes to the PDSCH of predefine subframe with detected transmission DBCH information again.After finishing the detection to PDSCH, LTE-AUE will obtain the quantity of LTE-A antenna port, switches to the LTE-A pattern again.

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

Fig. 6 has shown the main structure that is suitable for typical emission node device of the present invention (601) in wireless communication system.Transmitting node equipment comprises radiating circuit (601,606) and has one or more antenna ports that one or more antennas (602-605) are gone up the emission signal of communication that are used in.Upload at some antenna ports before the signal emission of transmission information, they can be earlier through handling in signal processing circuit (601,607).Signal processing circuit part (607) comprise or the accumulator apparatus of the said equipment of connecting in (601) different signal sections is carried out preferential predefine.The module that above-mentioned treatment circuit comprises is used for the information division of relevant all antenna port quantity and two or more predefine parts that are distributed in the signal of communication of having launched wherein preferentially are stored in the holder circuit through predefined part.According to embodiments of the invention, transmitting node can preferentially be considered as base station (eNB) or via node.

Fig. 7 has shown that in wireless communication system the master map that is suitable for the present invention's typical case's receiving node equipment (701) separates.Receiving node equipment comprises the receiving circuit (704) that is connected to one or more antennas (702,703).Above-mentioned receiving circuit comprises the electronic device that is used for receiving communication signal.The treatment circuit (705) that above-mentioned receiving equipment (701) comprises operates on the signal that receives by above-mentioned receiving circuit (704).The module that above-mentioned treatment circuit comprises is used for making a choice from the two or more predefines parts that have after the signal of communication such as emissions such as base stations is received, and this class predefine part can preferentially be stored in the holder circuit of receiving equipment.The electronic device of above-mentioned treatment circuit is determined the quantity of transmitting antenna port to be used at least from second subregion of signal of communication.First predefine portion district that needs process communication signals equally is to determine to wait to be applied to the quantity of the antenna port of signal processing afterwards.According to embodiments of the invention, transmitting node can preferentially be considered as portable terminal, for example UE.

In addition, known to the expert of this area, the method that the signaling quantity of the antenna port of introduction of the present invention is suitable for can be carried out in computer program, only needs this computer program to have code function, can impel computer to carry out said method by the step when moving in computer.Computer program can be included in the computer fetch medium of computer program.Computer fetch medium comprises any holder basically, for example 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 the foregoing description, also relate to and comprise all embodiment in the additional separately claim scope.

Claims (24)

1. be used to transmit the method that transmitting node comprises antenna port quantity signaling in the wireless communication system, it is characterized in that launching signal of communication, described signal of communication is carrying the information of at least one antenna port quantity of above-mentioned transmitting node, wherein divide and handle, and be distributed in the partly upward emission of at least two predefines of above-mentioned signal of communication at the information via of above-mentioned relevant at least one antenna port quantity.

2. method according to claim 1, first predefine part of wherein said signal of communication is corresponding 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 of above-mentioned signal of communication is corresponding notifies the signaling of the second class antenna port quantity that above-mentioned transmitting node comprises, and the above-mentioned first kind and the second class antenna port are different.

3. method according to claim 2, wherein said signal of communication are additional one group of information bits that the cyclic redundancy check (CRC) check digit of band mask is arranged.

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

5. method according to claim 4, the above-mentioned quantity that wherein has an antenna port at least is 1,2 or 4.

6. method according to claim 4, above-mentioned second predefine of wherein said signal of communication partly comprises at least one the explicit information bit that belongs to above-mentioned one group of information bit, is used to indicate the quantity of the described second class antenna port.

7. method according to claim 6, the quantity of wherein said second antenna port are 0,2,4 or 8.

8. according to each described method of claim 3-7, wherein said signal of communication is gone up emission at Physical Broadcast Channel (PBCH).

9. method according to claim 2, wherein said first kind antenna port is defined by first group of public reference signal CRS, the above-mentioned second class antenna port is defined by second group of public reference signal CRS, and above-mentioned first group and second group of common reference information CRS are different.

10. method according to claim 9, wherein said wireless communication system is meant cellular communication system, the public reference signal CRS that belongs to described first group and/or second group public reference signal CRS is the specific public reference signal CRS of cellular cell.

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

12. method according to claim 10, the wherein said wireless communication system senior LTE-A communication system that is Long Term Evolution, described signal of communication is by the above-mentioned transmitting node emission such as base station or relay station.

13. method according to claim 12, wherein said first kind antenna port is by LTE public reference signal CRS definition, and the described second class antenna port is defined by LTE-A channel state information reference signals CSI-RS.

14. method according to claim 2, described first predefine part of wherein said signal of communication is launched on first channel, described second the predefine part of described signal of communication is launched on second channel, and described second channel launched at least one port in the described I class antenna port of described first part indication of described signal of communication.

15. be used to transmit the method that described transmitting node comprises antenna port quantity signaling in the wireless communication system, it is characterized in that, the signal of communication of described transmitting node emission can carry the quantity information of at least one antenna port of transmitting node, wherein divide and handle, and be distributed in the partly upward emission of at least two predefines of above-mentioned signal of communication at the information via of above-mentioned relevant at least one antenna port quantity.

16. method according to claim 15, the wherein said wireless communication system senior LTE-A communication system that is Long Term Evolution, described transmitting node is meant base station or relay station.

17. be used to receive the method that the indication transmitting node comprises antenna port quantity signaling in the receiving node of wireless communication system, it is characterized in that, the signal of communication that described receiving node receives is carrying the quantity information of at least one antenna port of described transmitting node, wherein divide and handle, and be distributed in the partly upward emission of at least two predefines of described signal of communication at the information via of described at least one antenna port quantity.

18. method according to claim 17, wherein said wireless communication system are meant the senior LTE-A communication system of Long Term Evolution, described receiving node is meant portable terminal or user equipment (UE).

19. computer program, its characteristics are code function, can impel computer to come manner of execution according to any one of claim 1-18 when moving on computers.

20. according to claim 19, computer program comprises a computer fetch medium and a computer program, wherein computer program is included in the computer fetch medium, and by with the next item down or multinomial composition the: 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) and hard disk.

21. be used to transmit the transmitting node that described transmitting node comprises antenna port quantity signaling in the wireless communication system, it is characterized in that described transmitting node is configured to provide and the signal of communication that sends at least one the antenna port quantity information that is carrying relevant described sending node in described wireless communication system, the information via of wherein above-mentioned relevant at least one antenna port quantity is divided and is handled, and is distributed in the partly upward emission of at least two predefines of above-mentioned signal of communication.

22. transmitting node according to claim 21, wherein said wireless communication system are meant the senior LTE-A communication system of Long Term Evolution, described transmitting node is meant base station or relay station.

23. the receiving node of wireless communication system is used to receive the method that the indication transmitting node comprises the antenna port number signal, it is characterized in that described receiving node is arranged to the signal of communication that receives and handle at least one the antenna port quantity information that is carrying relevant described sending node, wherein the information via in the quantity of described at least one antenna port is divided and is handled, and is distributed in the partly upward emission of at least two predefines of described signal of communication.

24. receiving node according to claim 23, wherein said wireless communication system are meant " Long Term Evolution senior (LTE-A) " communication system, described receiving node is meant subscriber equipment (UE).

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