CN1973459A - Allocation of radio resource in orthogonal frequency division multiplexing system - Google Patents

Abstract

An uplink capacity is increased by a method in which more than two mobile stations simultaneously use a radio resource allocated to one mobile station. A method of allocating a radio resource in an orthogonal frequency division multiplexing system comprises receiving data associated with a radio resource allocation map from a base station, wherein the radio allocation map comprises control parameters for transmitting uplink data to the base station. The control parameters comprises orthogonal pilot pattern indicator for using orthogonal pilot patterns associated with supporting at least concurrent dual transmission by at least one mobile station, and for use in the same frequency band and same time duration. The orthogonal pilot patterns comprises at least a minus pilot being used for an uplink basic allocation unit. The mobile station then transmits uplink data to the base station by using the orthogonal pilot patterns.

Description

Wireless resource allocation in ofdm system

Technical field

The present invention relates to a kind of OFDMA (OFDM) type system, specifically, the present invention relates to wireless resource allocation in the OFDMA system.

Background technology

In ofdm system, high-speed serial signals is divided into several parallel signals, then, utilize quadrature subcarrier to modulate, so that transmission and reception.Therefore, the quadrature subcarrier that is divided into narrow bandwidth bears flat decline, therefore, has the characteristic of good frequency selective fading channels.Because utilize the straightforward procedure such as the protection interleaved, emitter can make and keep quadrature between the subcarrier, so receiving system does not need the complicated equalizer or the Rake receiver that use usually in DS-CDMA (direct sequence-code division multiple access) method.In the fixed broadband wireless such as the WLAN of IEEE802.11a or HIPERLAN neutralization such as IEEE802.16 inserted, the ofdm system with this modified model characteristic was used as standardized modulation system.Once with ofdm system as UMTS (universal mobile telecommunications system) but in application of modulation and one of demodulation techniques/multiple access method study.

Current, at the various multiple access methods of active research based on OFDM.As the customer requirements that is used to realize satisfying phenomenal growth, such as the technology likely of the next generation mobile communication of ultrahigh speed multimedia service, in actively investigation and research OFDMA system.By time-division access technology and time-division access technology are combined, the OFDMA system can adopt two-dimentional cut-in method.

Fig. 1 illustrates the allocation of radio resources according to prior art.With reference to figure 1, in wireless communication system, many users divide and use limited uplink/downlink Radio Resource.Yet many users do not divide and use user's assigned radio resource.That is, may there be the method for two or more user being distributed same resource.

For example, in TDMA (time-division multiplexing multiple access) system, the user is distributed specified time interval, and dispatch in view of the above, so that have only this user can in the special-purpose time interval of distributing, use this Radio Resource.In CDMA (code division multiple access) system, also carry out this scheduling, so that each user is distributed different codes.In other words, only a user is distributed a code.In the OFDM/OFDMA system, the specific user can use the distribution section that comprises the two-dimensional map of utilizing time and frequency representation.

Fig. 2 illustrates the Frame configuration according to existing OFDM/OFDMA wireless communication system.With reference to figure 2, it is the time of unit that trunnion axis is represented with the code element, and vertical axis represents with the subchannel to be the frequency of unit.Subchannel refers to a branch of a plurality of subcarrier.

The OFDMA physical layer will now be divided into the group with subchannel, then, utilize each group that this effective subcarrier is sent to different receiving terminals respectively.Therefore, the sub-carrier group that sends to a receiving terminal is called as subchannel.The subcarrier that disposes each subchannel can be adjacent each other, perhaps apart from one another by opening together uniformly-spaced.

In Fig. 2, the data field definition that utilizes two-dimensional space is to each user's distributed time slot, and this time slot refers to the one group of continuous subchannel that utilizes burst to distribute.A data field in the OFDMA is represented as the rectangle that utilizes time coordinate and subchannel coordinate definition.Can be to this data field of uplink allocation of specific user, the base station also can send to the specific user with this data field by down link.

On physical layer, utilization is used to realize that synchronous and balanced preamble starts downlink subframe, then, utilize to adopt broadcast mode, be used to define the position of the burst of down link and uplink allocation and down link MAP (DL-MAP) message and up link MAP (UL-MAP) message of use, this downlink subframe definition entire frame structure.

On the physical layer of burst pattern, the DL-MAP message definition is to the use of the burst of downlink interval distribution.The UL-MAP message definition is to the use of the burst of the distribution of the uplink interval in it.The information unit (IE) of configuration DL-MAP comprises DIUC (downlink interval use code), CID (connection ID) and burst address information (for example, subchannel offset, symbol offset, number of sub-channels and code element number).IE divides the downlink traffic interval of user side.

As what select, utilize the use of IE of UIUC (uplink interval use code) the definition configuration UL-MAP message of each CID, utilize " duration " to define each address at interval.At this, according to the UIUC value that is used for UL-MAP, definition use at interval, and also each is at interval from certain some beginning of " duration " that define up to the UL-MAP IE that begins from previous IE starting point.

DCD (downlink channel descriptor) message and UCD (uplink channel descriptor) message relate to and will be applied to each physical layer to the burst parameter correlation at interval of down link and uplink allocation, and this parameter comprises modulation system, FEC type of code etc.In addition, each parameter (for example, the K of R-S sign indicating number and R value) required according to various down link error correcting code type definitions.Utilization provides this parameter to the burst distribution of each UIUC in UCD and the DCD and DIUC distribution.

On the other hand, can be deversity scheme and multichannel multiplexing method with the MIMO in the OFDM/OFDMA system (multiple-input and multiple-output) technical classification.Deversity scheme is a kind of a plurality of transmit/receive antennas that utilize, and makes the signal coupling of bearing different Rayleigh fadings, compensating the channel degree of depth between each path, thereby improves the technology of receptivity.According to it is transmitting terminal or receiving terminal, and the diversity benefit of utilizing this technology to obtain is divided into transmit diversity and receive diversity.Be provided with altogether N transmitting antenna and altogether during M reception antenna, by making altogether MN fading channels couplings separately at most, the maximum diversity benefit is corresponding to MN.

By between transmitting antenna and reception antenna, forming the hypothesis subchannel, then, launch different pieces of information respectively by each transmitting antenna, multichannel multiplexing method improves emission rate.Different with deversity scheme, when only one of transmitting terminal and receiving terminal adopted a plurality of antenna, multichannel multiplexing method can not be realized sufficiently high benefit.In multichannel multiplexing method, multiplexed benefit is represented in Fa She the decline that respectively transmits simultaneously, and this multiplexed benefit is identical with the minimum value of transmitting terminal antenna amount and receiving terminal antenna amount.

As a kind of multichannel multiplexing method, also there is CSM (collaboration space is multiplexing) method.The CSM method allows two terminals to use same up link, thereby has saved uplink radio resources.

According to whether supporting the HARQ method, will in the OFDM/OFDMA system, distribute the Radio Resource of up link or down link, that is, the method for distribute data burst is divided into typical MAP method and HARQ method.

In general downlink MAP, distribute in the method for burst, show the coordinate that constitutes by time shaft and frequency axis.In the method, notice initial symbol skew, original subchannel skew, the quantity of employed code element and the quantity of employed subchannel.In up link, adopt method to symbol axis order assignment burst, therefore,, then can distribute the up link burst if notify the quantity of employed code element.

Different with general MAP, HARQ MAP adopts the method to subchannel axis order assignment up link and down link.In HARQ MAP, only notify the length of burst.Utilize this method, each burst of order assignment.Position when the initial position of this burst refers to that previous burst finishes, and this burst takies the time span that Radio Resource distributes according to this initial position at the most.

The HARQ of HARQ MAP is used in the support of OFDM/OFDMA system.In HARQMAP, be included in the position of the HARQ MAP pointer IE notice HARQ MAP in the DL-MAP.Therefore, to each burst of subchannel axis order assignment of down link.The initial position of this burst is the previous burst position when finishing, and this burst takies the time span that Radio Resource distributes according to this initial position at the most.This also is applied to up link.

Fig. 3 illustrates the uplink radio resources (data burst) to terminal distribution according to the typical DL-MAP of the utilization of prior art.

For typical DL-MAP, this terminal distribution is positioned at UL-MAP position first burst afterwards.UL-MAP distributes the uplink data burst by UL-MAP IE.

In CSM method according to the OFDMA technology of IEEE802.16d and e, utilization has the MIMO UL basic I E of data format shown in the table 1, the base station is each terminal of position informing of data burst in typical case's DL-MAP method, then, and the Radio Resource identical to each terminal distribution.

Used MIMO UL basic I E in order to notice, UIUC=15 is as expansion UIUC.There are 16 different values to be expressed as expansion UIUC.

[table 1]

Grammer	Size (bit)	Note
			MIMO_UL_Basic_IE(){
Extended DIUC	4	MIMO＝0x02
			Length	4	With the byte is the message-length (variable) of unit
Num_Assign	4	The burst quantity allotted
			For(j＝0；j＜Num_assign；j++){
CID	16	The basic CID of SS
			UIUC	4
MIMO_Control	1	For MSS:0:STTD 1:SM that can the dual emission MSS 0 for the SM that can cooperate: pilot pattern A 1: pilot pattern B
			Duration	10	In the OFDMA time slot
}
			}

Be used for the MIMO UL basic I E of two same uplink resources of terminal distribution is used for other existing MIMO.When terminal has plural antenna, which kind of method MIMO UL basic I E will use, and, be to use the STTD method that is used to obtain the diversity benefit that is, also be to use the SM method that is used to improve emission rate to notify each terminal.

Utilize the HARQ MAP of HARQ embodiment, can realize based on the CSM method in the OFDMA technology of IEEE 802.16d, e.Fig. 4 illustrates according to prior art and utilizes the uplink radio resources (data burst) of HARQ-MAP to terminal distribution.

Notify each burst different with utilizing DL-MAP, in method shown in Figure 4, the HARQ MAP pointer of the DL-MAP IE of unique HARQ represents to exist HARQ.The modulation of HARQMAP pointer IE notice HARQ MAP and encoding state and the size of HARQ MAP.

HARQ MAP comprises position and the big or small compression DL-MAP/UL-MAP that is used to notify the HARQ burst, and particularly, HARQ MAP uses the MIMO compression UL IE of MIMO.By being attached to " the compression UL-MAP IE of the frequency band AMC " position afterwards that is used to distribute " the compression UL-MAPIE of normal channel " of existing subchannel and is used for allocated frequency band AMC, use MIMO compression UL IE.As shown in Figure 4, MIMO compression UL IE only has the function of the subchannel of prior distribution.

In above-mentioned prior art, when the Radio Resource that requires because of the up link demand that increases to add, do not satisfy the suitable mode of this requirement.In this case, can consider to increase frequency resource.Yet because must consider base station location, and this exerts an influence to whole system, so it is not considered to increase the optimal way of uplink resource.Preferred method is to allow plural user to use the existing resource of before a user having been distributed simultaneously.

Summary of the invention

Therefore, the method that the purpose of this invention is to provide distributing radio resource in the OFDM/OFDMA system that a kind of a plurality of therein user could take and use the Radio Resource by uplink allocation simultaneously.

In order to realize these purposes of the present invention and other advantages, and it is used according to the invention, as this realization with broadly described, allocation of radio resources in a kind of orthogonal frequency division multiple access system system is provided, in this system, to the same uplink radio resources of plural terminal distribution.

According to one embodiment of present invention, the method for distributing radio resource comprises in the wireless communication system that adopts OFDM: receive from the base station and the relevant data of allocation of radio resources mapping.This wireless distribution mapping comprises the Control Parameter that is used for uplink data is sent to the base station.This Control Parameter comprises orthogonal pilot pattern indicator, is used to use with at least one mobile radio station support the orthogonal pilot pattern that dual emission is relevant at least simultaneously, and is used for same frequency band and identical duration.This orthogonal pilot pattern comprises the negative pilot tone that is used for uplink basic allocation unit at least.Utilize orthogonal pilot pattern, mobile radio station sends to the base station with uplink data.At least utilize two antennas in the mobile radio station to realize dual emission at least simultaneously.

According to an aspect of the present invention, each orthogonal pilot pattern comprises the positive pilot tone and the negative pilot tone at each diagonal angle that is positioned at uplink basic allocation unit respectively.Positive pilot tone and negative pilot tone preferably have opposite phases.

According to another aspect of the present invention, utilize the map information unit or utilize HARQ map information unit, the information relevant with this orthogonal pilot pattern is delivered to mobile radio station.

According to another aspect of the present invention, uplink data comprises two groups of data utilizing orthogonal pilot pattern space on same subchannel multiplexed at least.

According to another embodiment of the present invention, the method of distributing radio resource comprises in ofdm system: the data relevant with the allocation of radio resources mapping are sent to mobile radio station, wherein the wireless distribution mapping comprises the Control Parameter that is used for uplink data is sent to the base station, wherein this Control Parameter comprises orthogonal pilot pattern indicator, be used to use with at least one mobile radio station and support the relevant orthogonal pilot pattern of dual emission simultaneously at least, and being used for same frequency band and identical duration, this orthogonal pilot pattern comprises the negative pilot tone that is used for uplink basic allocation unit at least; And, wherein utilize orthogonal pilot pattern this uplink data of encoding from mobile radio station receiving uplink data.Preferably, utilize two antennas in the mobile radio station to realize dual emission simultaneously at least, and preferably, uplink data packet is drawn together at least two group data of utilizing orthogonal pilot pattern space on same subchannel multiplexed.

According to an aspect of the present invention, each orthogonal pilot pattern comprises the positive pilot tone and the negative pilot tone at each diagonal angle that is positioned at uplink basic allocation unit respectively.Positive pilot tone and negative pilot tone preferably have opposite phases.

According to another aspect of the present invention, utilize the map information unit, perhaps utilize HARQ map information unit, the information relevant with this orthogonal pilot pattern is delivered to mobile radio station.

By describing the present invention in detail below in conjunction with accompanying drawing, of the present invention above-mentioned and other purposes, feature, aspect and advantage are more apparent.

Description of drawings

Included accompanying drawing helps further to understand the present invention, and accompanying drawing introduces this specification, constitutes the part of this specification, and it illustrates the embodiment of the invention, and it and explanation one are used from the explanation principle of the invention.

Fig. 1 illustrates the wireless resource allocation of the prior art according to the present invention.

Fig. 2 illustrates the Frame configuration in the existing OFDMA wireless communication system.

Fig. 3 illustrates according to prior art and utilizes the running of typical DL-MAP to the terminal distribution uplink radio resources.

Fig. 4 illustrates and utilizes the running of HARQ-MAP to the terminal distribution uplink radio resources according to prior art.

Fig. 5 distributes uplink radio resources according to first embodiment of the invention in the OFDM/OFDMA system.

Fig. 6 is illustrated in the basic allocation unit of passing through the uplink radio resources of uplink transmit in the OFDM/OFDMA system.

Fig. 7 illustrates the multi-user pilot figure according to first embodiment of the invention.

Fig. 8 illustrates the pilot pattern of using the different orthogonal code according to a further embodiment of the invention.

Fig. 9 is respectively to the signal value table of pilot frequency distribution shown in Fig. 7 A and the 7B.

Figure 10 illustrates the pilot pattern combination according to one embodiment of the invention collocating uplink link data burst.

Figure 11 illustrates the running based on the CSM method that adopts typical DL-MAP according to one embodiment of the invention.

Figure 12 illustrates according to one embodiment of the invention and adopts the running of HARQ-MAP based on the CSM method.

Figure 13 illustrates and adopts the running of HARQ-MAP based on the CSM method according to another embodiment of the present invention.

Embodiment

Now, will describe the preferred embodiments of the present invention in detail, accompanying drawing illustrates the example of the preferred embodiment.The preferred embodiments of the present invention are described below with reference to the accompanying drawings.

The present invention is the technology that is used to enlarge uplink capacity, and this technology allows many portable terminals to use simultaneously a portable terminal assigned radio resource.Portable terminal needs a modification of pilot tone or is used to measure the reference signal of wireless channel, and the base station need be used to decode the data of utilizing a plurality of portable terminals that Radio Resource sends method and be used for power controlling to reduce the method for signal being disturbed the influence that produces because increased the user.

Fig. 5 illustrates the uplink radio resource assignment of carrying out according to one embodiment of the invention in the OFDM/OFDMA system, wherein suppose and distribute same Radio Resource as benchmark to user 1 and user 5.Portable terminal represented in term " user ".

The base station at first utilizes signaling or message to distribute same Radio Resource and to notify two users (user 1 and user 5) about information, code rate, modulator approach, pilot pattern, room and time code system and other parameters of the channel coding method that adopted it.

Quantity according to the transmitting antenna of the reception antenna quantity of client and time code system, this base station and this portable terminal, these two users (for example, user 1 and user 5) portable terminal have 4 kinds of different emissions/reception combination respectively with signal emission/reception between the base station, do explanation below.

At first, in the spatial reuse launching technique, have a transmitting antenna respectively at these two users' (user 1 and user 5) portable terminal, and the base station is when having plural reception antenna, following [equation 1] defines this emission/reception combination.

[equation 1]

$\left[\begin{array}{c}{x}_1\\ x_2\\ \&CenterDot;\\ \&CenterDot;\\ \&CenterDot;\\ x_N\end{array}\right]=\left[\begin{array}{cc}{h}_{11}& h_{12}\\ h_{21}& h_{22}\\ \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;\\ \&CenterDot;& \&CenterDot;\\ h_{N1}& h_{N2}\end{array}\right]\left[\begin{array}{c}{s}_1\\ {\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">s</figure-callout>}}_2\end{array}\right]+v$

In [equation 1], x _iBe the signal that sends to the i antenna, h _JiBe the channel that sends to the j antenna of this base station from the i portable terminal, s _iBe the data of i portable terminal, and v is additive white Gaussian noise vector (an AWGN vector).

Secondly, in the spatial reuse launching technique, have a transmitting antenna respectively at these two users' (user 1 and user 5) portable terminal, and the base station is when having a reception antenna, following [equation 2] defines this emission/receptions and makes up.

[equation 2]

x＝h ₁s ₁+h ₂s ₂+v

In [equation 2], x sends to signal of base station, h _iBe the channel that sends to the base station from the i portable terminal, s _iBe the data of i portable terminal, v is additive white Gaussian noise vector (an AWGN vector).

Once more, in the space-time emission diversity method, have two transmitting antennas respectively at these two users' (user 1 and user 5) portable terminal, and the base station is when having plural reception antenna, following [equation 3] defines this emission/reception combination.

[equation 3]

$\left[\begin{array}{c}{x}_1\left(k\right)\\ x_2^{*}(k+1)\\ x_2\left(k\right)\\ x_2^{*}(k+1)\end{array}\right]=\left[\begin{array}{cccc}{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,11}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,12}}& {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{2,11}}& {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{2,12}}\\ {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,12}}^{*}& -{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">\; <figure-callout\; id="11"\; label="h"\; filenames="A20058002078400331.png"\; state="\{\{state\}\}">h</figure-callout>\; </figure-callout>}}_{\mathrm{1,11}}^{*}& h_{2.12}^{*}& -{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">\; <figure-callout\; id="11"\; label="h"\; filenames="A20058002078400331.png"\; state="\{\{state\}\}">h</figure-callout>\; </figure-callout>}}_{\mathrm{2,11}}^{*}\\ {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,21}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,22}}& {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{2,21}}& {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{2,22}}\\ {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,22}}^{*}& -{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,21}}^{*}& {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{2,22}}^{*}& -{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{2,21}}^{*}\end{array}\right]\left[\begin{array}{c}{\mathrm{<figure-callout\; id="1"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">s</figure-callout>}}_{\mathrm{1,1}}\\ {\mathrm{<figure-callout\; id="1"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">s</figure-callout>}}_{\mathrm{1,2}}\\ {\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">s</figure-callout>}}_{\mathrm{2,1}}\\ {\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">\; <figure-callout\; id="2"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">s</figure-callout>\; </figure-callout>}}_{\mathrm{2,2}}\end{array}\right]+v$

In [equation 3], x _iBe the signal that sends to the i antenna of base station, h _{I, jk}Be channel from the k antenna transmission of i portable terminal to the j antenna of this base station, s _{I, j}Be the j data of i portable terminal, and v is additive white Gaussian noise vector (an AWGN vector).

The 4th, in the spatial reuse launching technique, have a plurality of transmitting antennas respectively, and the base station is when having reception antenna more than four at these two users' (user 1 and user 5) portable terminal, following [equation 4] defines this emission/reception combination.

[equation 4]

$\left[\begin{array}{c}{x}_1\\ x_2\\ x_3\\ x_4\end{array}\right]=\left[\begin{array}{cccc}{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,11}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,12}}& {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{2,11}}& {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{2,12}}\\ {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,12}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,22}}& {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{2,21}}& {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{2,22}}\\ {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,31}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,32}}& {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{2,31}}& {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{2,32}}\\ {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,42}}& {\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,42}}& h_{2.41}& {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{2,42}}\end{array}\right]\left[\begin{array}{c}{\mathrm{<figure-callout\; id="1"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">s</figure-callout>}}_{\mathrm{1,1}}\\ {\mathrm{<figure-callout\; id="1"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">s</figure-callout>}}_{\mathrm{1,2}}\\ {\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">s</figure-callout>}}_{\mathrm{2,1}}\\ {\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">\; <figure-callout\; id="2"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">s</figure-callout>\; </figure-callout>}}_{\mathrm{2,2}}\end{array}\right]+v$

In [equation 4], x _iBe the signal that sends to the i antenna of base station, h _{I, jk}Be channel from the k antenna transmission of i portable terminal to the j antenna of this base station, s _{I, j}Be the j data of i portable terminal, and v is additive white Gaussian noise vector (an AWGN vector).

This base station is with predetermined information

(that is, chnnel coding type, code rate, modulator approach, pilot pattern, space time code system etc.) sends to these two users (user 1 and user 5), then, determines these two users (user 1 and user's 5) priority.(, suppose that user 1 is first user, and user 5 being the 5th users) at this.

In case determined priority respectively, be included in the subcarrier of basic allocation unit data by making these data, these two users send to the base station with each data.Fig. 6 illustrates basic allocation unit.

Fig. 6 is illustrated in the basic allocation unit (also being called as chip (tile)) of the Radio Resource that sends by up link in the OFDM/OFDMA system.A plurality of basic allocation unit become can be to the smallest allocation unit of user's distribution.As the example according to prior art, 6 times of basic allocation unit is the smallest allocation unit.

The frequency axis of basic allocation unit depends on the order of ordinate, and is to utilize the axle of basic group configuration by forming a plurality of being extended to (perhaps contiguous) subcarrier of basic group.Can dispose this axle arbitrarily.

Basic allocation unit by uplink transmit in the OFDM/OFDMA system can have the structure different with structure shown in Figure 6, and according to system performance, can have different pilot tones and data arrangement.When adopting the basic allocation unit different, the pilot pattern that is fit to it can be combined, as shown in figure 10 with basic allocation unit shown in Figure 6.

This base station is analyzed the pilot pattern of the basic allocation unit that receives by up link, has launched the data of receiving to discern which user (that is portable terminal).In other words, by the pilot pattern that is included in this basic allocation unit is analyzed, the data that this identification of base stations is received are from user 1 or from user 5.

Fig. 7 A and 7B illustrate the pilot pattern according to first embodiment of the invention, and Fig. 9 is the signal value table that illustrates respectively pilot frequency distribution shown in Fig. 7 A and the 7B.

In figure shown in Figure 71,2 and 3, user 1 adopts different pilot tones respectively with user 5, therefore, can discern this two user's data.On the other hand, in figure shown in Figure 84, user 1 uses identical pilot subcarrier or subchannel with user 5, but utilizes orthogonal code can discern this two user's data.

In order to be explained again according to division methods, figure 1 is the pilot tone according to time-division and frequency division, and figure 2 is the pilot tones according to frequency division, and figure 3 is the pilot tones according to the time-division, and figure 4 is the pilot tones of dividing according to sign indicating number.

Pilot pattern shown in Fig. 7 A and the 7B illustrates the embodiment of the invention, and can change this pilot pattern according to basic allocation unit.In addition, when these two users' (user 1 and user 5) Radio Resource comprises a plurality of basic allocation unit, as shown in figure 10, can be together with the graphics combine shown in Fig. 7 A to 7C.

With reference to figure 9, show pilot pattern C and D according to an embodiment of the invention.Because orthogonality, thus pilot pattern C and D be used for can dual emission mobile radio station, as shown in table 4 below.Pilot signal value+1 expression true amplitude pilot tone, and the negative amplitude pilot tone of pilot signal value-1 expression.In other words ,+1 represent the pilot tone that phase deviation 180 is spent with-1.

Because pilot tone is used for because the distortion that wireless channel produces compensates, so they should have the structure that user 1 pilot tone and user's 5 pilot tone replaces.This base station utilizes each user's of pilot signal measurement wireless channel, then, compensates this channel, and it is applied to divide the method for user data.In addition, by with each user's wireless channel and known the time distributing user quantity be applied to the equation of detection method, for example, in the following PRML, can divide and detect each user's data.

[equation 5]

$x=h_1{\mathrm{<figure-callout\; id="1"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">s</figure-callout>}}_1+h_2{\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">s</figure-callout>}}_2+v$

$({\hat{S}}_1,{\hat{S}}_2)=\underset{({\mathrm{<figure-callout\; id="1"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">s</figure-callout>}}_1,s_2)}{\arg \max }|x-{\hat{h}}_1{S}_1-{\hat{h}}_2{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">S</figure-callout>}}_2|$

According to the spatial reuse launching technique, [equation 5] represents that these two users' (user 1 and user 5) portable terminal has a transmitting antenna respectively, and the PRML of base station when having a reception antenna.

In [equation 5],

Be the wireless channel coefficient h that utilizes pilot tone to obtain ₁, h ₂Estimated value.Can utilize Reappraise , and utilization reappraises Upgrade

S in [equation 5] ₁, s ₂Can be 0 and the value of known modulation value.For example, when modulator approach is the QPSK method, s ₁, s ₂The set of values that can have is { 1+i, 1-i ,-1+i ,-1-i, 0}.

By up link, this base station is expanded these two users' power, so that these two users' (user 1 and user 2) signal has suitable power.In some cases, these two users' gross power can evenly be controlled in this base station, but also can control these two users' signal power respectively.Do below and be described in more detail, this base stations control is passed through the power P 1+P5 with user 1 power P 1 and user's 5 power P 5 additions acquisition, thereby (user 2 with other users in maintenance, user 3, user 4) power P 2, P3 or P4 identical, perhaps to the controlling of this two users with power P 1+P5 so that should and power P 1+P5 keeps being better than or if in other users' power P 3, P3 or P4.

On the other hand, for these two user's data of more accurate detection, the power ratio (P1: P5) between these two users can be regulated in the base station.That is, make one of these two users' power have weighted value, to regulate the power ratio (P1: P5) between these two users.

For example, the power ratio between these two users that adopt the QPSK method is 1: 4 o'clock, and the signal of stack has different values respectively, shown in following [table 2], therefore, can more easily detect.

[table 2]

The user that can not send data is sent to the base station with null value or empty code.For example, in structure shown in Figure 3, be included in 8 subcarriers of data by making 1+i, the user sends 1+i.

Below an alternative embodiment of the invention will be described.

When terminal adopts CSM (collaboration space is multiplexing) method, two portable terminals are distributed same uplink radio resources, and use different pilot tones respectively, with the signal of identification from two users' transmissions.Utilize typical DL-MAP and HARQ MAP, can be to having these two terminal applies CSM methods of two antennas.

Figure 11 illustrates the running that adopts the CSM method of typical DL-MAP according to the embodiment of the invention.

In typical UL-MAP, UL-MAP is to the follow-up first data burst of terminal distribution.As shown in figure 10, utilize UL-MAP IE, UL-MAP distribute data burst.

In the CSM method, utilize MIMO UL to strengthen IE with form shown in the table 3, perhaps utilize existing MIMO UL basic I E, notice is to the position of the burst of two portable terminals distribution.

To illustrate below and utilize MIMO UL to strengthen IE, that is, and the CSM method embodiment of a kind of new IE.When comprising each IE that is represented as UIUC, as shown in table 3, can utilize 11 time slots to form new expansion UIUC, with additional new IE.

[table 3]

UIUC	Use
		0	Fast feedback channel
1-10	Different bursts distribute
		11	New expansion UIUC
12	The CDMA bandwidth request, the CDMA range finding
		13	PARP reduces distribution, place of safety
14	CDMA distributes IE
		15	Expansion UIUC

[table 4]

Grammer	Size (bit)	Note
			MIMO_UL_Enhanced_IE(){
New Extended UIUC	4	The MIMO=0x01 that strengthens
			Length	4	With the byte is the length (variable) of unit
Num_Assign	4	The burst quantity allotted
			For(j＝0,j＜Num_assign；j++){
Num_CID	2
			For(i＝0；i＜Num_CID；i++){
CID	16	The basic CID of SS
			UIUC	4
MIMO control	2	For MSS 00:STTD/ pilot pattern A that can dual emission, B 01:STTD/ pilot pattern C, D 10:SM/ pilot pattern A, B 11:SM/ pilot pattern C, D is for utilizing can the cooperate MSS 00 of SM of an antenna: pilot pattern A 01: pilot pattern B 10-11: keep
			}
Duration	10	In the OFDMA time slot
Padding	Variable
			}

In [table 4], utilize the field value definition uplink resource allocation that is called as " duration ".Different with the square resource allocation of adopting in down link, adding up to time shaft distributed time slot quantity in this base station, then, notifies this terminal with this accumulated value.At this moment, utilize " Num_assign " field, the quantity of the burst that notice will be used, and the CID (connection ID) of the portable terminal that each burst is distributed is repeated to notify in the base station.

Preferably utilization " MIMO control " field is determined the characteristic to the burst of this portable terminal distribution.Be registered on this base station at this portable terminal, when using the CSM (collaboration space is multiplexing) as one of MIMO pattern, between portable terminal and base station, carry out CSM and consult, to understand whether can use CSM.Therefore, CSM is applied to use the portable terminal of CSM.

[table 5] is illustrated between the CSM period of negotiation, the structure of the SBC request (REQ/RSP) that exchanges between this base station and portable terminal.

[table 5]

Type	Length	Value
			Xxx
	1 bit	Bit#0: cooperation SM Bit#1-#7: keep

When these two terminals had an antenna respectively, two signals that are called as pilot pattern A and B can be discerned in this base station.When each of this two terminals had two antennas, a terminal was delivered to pilot pattern A and B in this base station, and pilot pattern C and D are delivered to another terminal.

As mentioned above, " expansion UIUC=11 " can use " MIMO UL strengthens IE " message.When this terminal only has an antenna and when this terminal has two antennas, all can use " MIMO UL strengthens IE " message.Be assigned to two terminals by a up link burst that will upload to the base station simultaneously, this IE of characterization.As shown in figure 11, utilize a up link to divide to match the up link burst (burst#1 and burst#2) of these two terminal distribution

The CSM method embodiment of employing " MIMO UL basic I E " message then, will be described.[table 6] illustrates the data format of " MIMO UL basic I E " message.

[table 6]

Grammer	Size (bit)	Note
			MIMO_UL_basic_IE(){
Extended DIUC	4	MIMO＝0x02
			Length	4	With the byte is the message-length (variable) of unit
Num_Assign	4	The burst quantity allotted
			For(j＝0；j＜Num_assign；j++){
CID	16	The basic CID of SS
			UIUC	4
MIMO_Control	1	For MSS:0:STTD 1:SM that can the dual emission MSS 0 for the SM that can cooperate: pilot pattern A 1: pilot pattern B
			Duration	10	In the OFDMA time slot
Pilot pattern
		1	The MSS 0 of the dual emission of SM can cooperate: pilot pattern A, B 1: pilot pattern C, D
}
	Padding	Variable
}

Be used to distribute from the base station to " MIMO UL basic I E " message of the same uplink resource (data burst) of these two terminals and also be used for other MIMO.At first, when each terminal has two above antennas, utilize " MIMO control " field, this base station will be the STTD method that is used to obtain the diversity benefit, still be used for notifying this terminal by the SM method of emission rate.In addition, when each terminal is all supported the CSM method, utilize " MIMO control " field, this base station is to these two same uplink resources of terminal distribution, and indicate these two terminals to use different pilot pattern respectively, to discern the signal of these two terminal emissions.In order to use the present invention, when each terminal had two antennas, existing " MIMO control " field utilization was notified this two pilot pattern that terminal will be used to 1 bit that CSM keeps.There is A to D pilot pattern, to each terminal distribution two pilot pattern wherein.

Then, will illustrate, adopt the CSM method of HARQ-MAP as the preferred embodiments of the present invention.With utilize DL-MAP different to the existing method of terminal distribution burst, utilize the HARQ MAP pointer IE of DL-MAP IE, there is HARQ in notice.Modulation and encoding state and the size thereof of HARQ MAP pointer notice HARQ MAP.

The HARQ MAP of HARQ pointer IE notice comprises MIMO compression DL-MAP/UL-MAP, the position and the size of its notice HARQ burst.Preferably, utilize MIMO compression UL IE to determine the MIMO pattern, and " the MIMO compression UL IE of cooperation SM " is used for CSM.

Figure 12 illustrates the running that adopts the CSM method of HARQ-MAP according to the embodiment of the invention.Table 7 illustrates the data format of " MIMO compression UL MAPIE " message that the running of CSM method uses.

" the compression UL-MAP IE that is used for frequency band AMC " that " MIMO compression UL IE " message is used to distribute " the compression UL-MAP IE that is used for normal sub-channel " of prior art subchannel and is used for allocated frequency band AMC.Because according to the characteristic of CSM, should distribute same subchannel (uplink resource), as shown in figure 12, so HARQ MAP is respectively to having different two subchannels that channel allocation is identical that connect factor (RCID).In addition, distribute district function, will " be used to cooperate SM MIMO compression UL IE " append to this subchannel position afterwards for use in order to provide.According to the quantity of the antenna on each terminal, the value of difference " CSM_control ".That is, when each terminal only had 1 antenna, the pilot pattern that these two antennas use was divided into A and B.When each terminal adopts two antennas, to a terminal distribution A and B, and to another terminal distribution C and D.

[table 7]

Grammer	Size (bit)	Note
			MIMO_compact UL_map IE ()
Compact UL_MAP	3	Type=7
			UL_MAP Sub-type	5	CSM=0x02
Length	4	With the byte is the IE length of unit
			RCID_num
	1	Be assigned to the quantity of the CID in the same zone
			For (i=0; I＜RCID_num; I++)
RCID_IE	Variable
			CSM control
	1	For having can the cooperate MSS:0 of SM of an antenna: pilot pattern A 1: pilot pattern B is for having two antennas MSS 0 of SM: pilot pattern A that can cooperate; B 1: pilot pattern C, D
			Num_layer
	1	00:1 layer 01:2 layer
			For (i=0; I＜Num_layer; I++)		When STC requires, this circulation specified layer 2 and on Nep.Use identical Nsch and RCID to every layer

If(H-ARQ Mode＝CTC Incremental Redundancy){Nep} Elseif(H-MAP Mode＝Generic Chase){UIUC}	4	Be used for the HARQ compact_UL_Map regulation H-ARQ Mode of Switch H-ARQ Mode
			}
Padding	Variable
			}

Figure 13 illustrates the running that adopts the CSM method of HARQ-MAP according to the embodiment of the invention.Table 8 illustrates the data format of " MIMO compression UL MAP IE " message.

" MIMO compression UL MAP IE " message is used for " the compression UL-MAP IE that is used for normal sub-channel " of allocated sub-channels and is used for allocated frequency band AMC " the compression UL-MAP IE that is used for frequency band AMC ".Because according to the characteristic of CSM, should distribute same subchannel (uplink resource), as shown in figure 13, so HARQ MAP utilizes two independent IE, respectively to having different two subchannels that terminal distribution is identical that connect factor (RCID).In addition, distribute district function, " MIMO of the SM that is used to cooperate compresses UL IE " appended to these two IE position afterwards respectively in order to provide.According to the quantity of the antenna on each terminal, the value of difference " CSM_control ".That is, when each terminal only had 1 antenna, the pilot pattern that these two antennas use was divided into A and B.When each terminal adopts two antennas, to a terminal distribution A and B, and to another terminal distribution C and D.

[table 8]

Grammer	Size (bit)	Note
			MIMO_compact UL_map IE(){
Compact UL_MAP	3	Type＝7
			UL-MAP Sub-type	5	CSM＝0x02
Length	4	With the byte is the IE length of unit

CSM control	1	MSS:0 for the SM that can cooperate with an antenna: pilot pattern A 1: pilot pattern B is for the MSS 0 of the SM that can cooperate with two antennas: pilot pattern A; B 1: pilot pattern C, D
			Num_layer
	1	00:1 layer 01:2 layer
			For (i=0; I＜Num_layer; I++)		When STC requires, this circulation specified layer 2 and on Nep.Use identical Nsch and RCID to every layer
If (H-ARQ Mode=CTC Incremental Redundancy) { Nep} Elseif (H-MAP Mode=Generic Chase) { UIUC}	4	Be used for the HARQ compact_UL_Map regulation H-ARQ Mode of Switch H-ARQ Mode
			}
Padding	Variable
			}

Support two terminals of CSM method to adopt SM and STTD method respectively.

In brief, for example, suppose that a terminal that adopts two antennas sends data by same data field, when this terminal adopted the SM method, two antennas transmitted respectively simultaneously, then, then received each signal that utilizes [equation 6] expression.Therefore, when then detecting each signal, require to carry out power control.

[equation 6]

x＝h ₁·s ₁+h ₂·s ₂+v

When this terminal adopts the STTD method, at first (that is) in the time 1, these two antennas are launched s respectively ₁, s ₂Then (that is, in the time 2), these two antennas are launched respectively-s ₂ ^*, s ₁ ^*The signal that [equation 7] expression is received.

[equation 7]

${\mathrm{<figure-callout\; id="1"\; label="r\; time"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">r</figure-callout>}}_{\mathrm{time}}={\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_1\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">s</figure-callout>}}_1+{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">s</figure-callout>}}_2+n$

${\mathrm{<figure-callout\; id="2"\; label="r\; time"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">r</figure-callout>}}_{\mathrm{time}}={\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_1\&CenterDot;(-{\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">s</figure-callout>}}_2^{*})+{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="s"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">s</figure-callout>}}_1^{*}+n$

At this, suppose that noise is little of can ignoring, utilize two known received signals, can detect two the unknowns and transmit, shown in [equation 8].Therefore, have no reason to use certain power to detect.

[equation 8]

${\hat{S}}_1={\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{*}\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="r\; time"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">r</figure-callout>}}_{\mathrm{time}}+{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="r\; time"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">r</figure-callout>}}_{\mathrm{time}}^2$

${\hat{S}}_2={\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_2^{*}\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="r\; time"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">r</figure-callout>}}_{\mathrm{time}}+{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">h</figure-callout>}}_1\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="r\; time"\; filenames="A20058002078400331.png,A20058002078400351.png"\; state="\{\{state\}\}">r</figure-callout>}}_{\mathrm{time}}^2$

Therefore, when two terminals with two antennas are launched data by same data field, can adopt the CSM method.In other words, utilize the power control in the SM method, can detect 4 data, and in the STTD method, utilize 4 received signals, can detect 4 and transmit.

As mentioned above, adopt the method for plural user's use, can improve uplink capacity, and need not to increase bandwidth user's assigned radio resource.In addition, with identical to downlink allocation part in the TDD method to the time of uplink allocation, by to downlink allocation to the Radio Resource of uplink allocation, can more effectively utilize finite wireless resources.

By to two terminal distribution uplink resources, the present invention can save uplink radio resources, and the present invention can also be applied to current resource allocation and HARQ.

Because under the situation that does not break away from essence of the present invention or substantive characteristics, can accomplished in various ways the present invention, so it is also to be understood that, the foregoing description is not limited to above-described any details, except as otherwise noted, and should be in the essential scope that claims limit, more extensively understand the foregoing description, therefore, claims are intended to comprise the clause that falls into claim, perhaps all changes and the modification in the equivalents scope of this clause.

Claims (20)

1. the method for a distributing radio resource in adopting the wireless communication system of OFDM, this method comprises:

Receive and the relevant data of allocation of radio resources mapping from the base station, wherein the wireless distribution mapping comprises the Control Parameter that is used for uplink data is sent to the base station, wherein this Control Parameter comprises orthogonal pilot pattern indicator, this orthogonal pilot pattern indicator is used to use with at least one mobile radio station supports the orthogonal pilot pattern that dual emission is relevant at least simultaneously, and be used in same frequency band and the identical duration, this orthogonal pilot pattern comprises the negative pilot tone that is used for uplink basic allocation unit at least; And

Mobile radio station utilizes orthogonal pilot pattern that uplink data is sent to the base station.

2. method according to claim 1, wherein the orthogonal pilot pattern in the uplink basic allocation unit is one of following at least:

3. method according to claim 1, wherein, each orthogonal pilot pattern comprises the positive pilot tone and the negative pilot tone at each diagonal angle that is positioned at uplink basic allocation unit.

4. method according to claim 3, wherein, this positive pilot tone and negative pilot tone have opposite phases.

5. method according to claim 1 wherein, utilizes the map information unit that the information relevant with this orthogonal pilot pattern is delivered to mobile radio station.

6. method according to claim 1 wherein, utilizes HARQ map information unit that the information relevant with this orthogonal pilot pattern is delivered to this mobile radio station.

7. method according to claim 1 wherein, utilizes at least two antennas in the mobile radio station to realize the dual emission of while at least.

8. method according to claim 1, wherein, this uplink data packet is drawn together at least two group data of utilizing orthogonal pilot pattern space on same subchannel multiplexing.

9. the method for a distributing radio resource in adopting the wireless communication system of OFDM, this method comprises:

Receive and the relevant data of allocation of radio resources mapping from the base station, wherein the wireless distribution mapping comprises orthogonal pilot pattern indicator, it is used to use with at least one mobile radio station supports the relevant orthogonal pilot pattern of dual emission simultaneously at least, and be used in same frequency band and the identical duration, this orthogonal pilot pattern comprises:

10. method according to claim 9, wherein, this positive pilot tone and negative pilot tone have opposite phases.

11. method according to claim 9 wherein, utilizes the map information unit that the information relevant with this orthogonal pilot pattern is delivered to mobile radio station.

12. method according to claim 9 wherein, utilizes HARQ map information unit that the information relevant with this orthogonal pilot pattern is delivered to this mobile radio station.

13. the method for a distributing radio resource in the wireless communication system that adopts OFDM, this method comprises:

The data relevant with the allocation of radio resources mapping are sent to mobile radio station, wherein the wireless distribution mapping comprises the Control Parameter that is used for uplink data is sent to the base station, wherein this Control Parameter comprises orthogonal pilot pattern indicator, it is used to use with at least one mobile radio station supports the relevant orthogonal pilot pattern of dual emission simultaneously at least, and be used in same frequency band and the identical duration, this orthogonal pilot pattern comprises the negative pilot tone that is used for uplink basic allocation unit at least; And

From mobile radio station receiving uplink data, wherein utilize orthogonal pilot pattern this uplink data of encoding.

14. method according to claim 13, wherein, the orthogonal pilot pattern of this uplink basic allocation unit is one of following at least:

15. method according to claim 13, wherein, each orthogonal pilot pattern comprises the positive pilot tone and the negative pilot tone at each diagonal angle that is positioned at uplink basic allocation unit.

16. method according to claim 15, wherein, this positive pilot tone and negative pilot tone have opposite phases.

17. method according to claim 13 wherein, utilizes the map information unit that the information relevant with this orthogonal pilot pattern is delivered to mobile radio station.

18. method according to claim 13 wherein, utilizes HARQ map information unit that the information relevant with this orthogonal pilot pattern is delivered to this mobile radio station.

19. method according to claim 13 wherein, is utilized at least two antennas in the mobile radio station, realizes dual emission at least simultaneously.

20. method according to claim 13, wherein, this uplink data packet is drawn together at least two group data of utilizing orthogonal pilot pattern space on same subchannel multiplexing.

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