CN101409883A - Method and system for planning down link auxiliary reference signal in multi-carrier wideband system - Google Patents
Method and system for planning down link auxiliary reference signal in multi-carrier wideband system Download PDFInfo
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- CN101409883A CN101409883A CNA2007101514337A CN200710151433A CN101409883A CN 101409883 A CN101409883 A CN 101409883A CN A2007101514337 A CNA2007101514337 A CN A2007101514337A CN 200710151433 A CN200710151433 A CN 200710151433A CN 101409883 A CN101409883 A CN 101409883A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
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Abstract
The invention provides a method and a system for making a resource plan for a downlink-aided datum signal in the multi-carrier wideband system. The system consists of a base station, user equipment and a transmission program manager. The base station transmits a downlink datum signal. The user equipment receives the downlink datum signal and obtains at least one channel state message with usable frequency band from the downlink datum signal which is used in the next downlink frequency band. The transmission program manager is coupled with the base station and distributes the wireless resources to the user equipment according to the channel state fed back by the user equipment. The feedback of the channel state is at least partially based on the channel state information.
Description
Technical field
The present invention relates to wireless communication system, relate in particular to and carry out down link detection (sounding) so that carry out the system and method for the frequency domain resource planning of multicarrier system.
Background technology
Third generation collaboration items (3GPP) is established the technical specification and the technical report in the applicable whole world of the third generation mobile system of producing global mobile system (GSM) the communication core network that is used for based on evolution, and produces the access technology (promptly the universal terrestrial radio in Frequency Division Duplexing (FDD) (FDD) and time division duplex (TDD) pattern inserts (UTRA) technology) that this project is supported.This scope is revised the maintenance and the exploitation (for example GPRS (GPRS) and enhanced data rates for gsm evolution (EDGE)) of the technical report of the wireless access technology that comprises the GSM technical specification and comprise evolution subsequently.
In 3GPP Long Term Evolution (LTE) wireless communication system, up link (UL) is surveyed the channel quality information be used to estimate that the form with CQI (CQI) provides.Be accompanied by radio communication and will adopt broadband (for example 20MHz be used for 3GPP LTE and be used for global inserting of microwave interoperability (WiMAX) (according to IEEE 802.16)), channel quality can influence available bandwidth partly or entirely.System compares with " narrow " band, and this characteristics of radio channels can great change on the whole bandwidth of broadband system.Fig. 1 shows an example of the channel state variations in the broadband system.As shown in the figure, channel status response (shown in vertical axis) changes (shown in trunnion axis) on a frequency range.
The variation of given channel status response on this frequency range, UL surveys the channel quality information that is used to estimate at different frequency.Usually, detection is meant by the reference signal (RS) of broadcasting a kind of beacon shape and comes test channel or path.The work station that receives the RS of this broadcasting can be estimated the connectivity in this responsive channels or path, propagated and availability.Use subsequently at each channel and set of resources is fitted on subscriber equipment (UE) from the CQI that UL surveys reference signal (SRS) acquisition.In addition, for the TDD system, the CQI that is used for each channel is used to wave beam and forms.
Survey in order to carry out UL, the UL of UE between UE and respective base station (being also referred to as the Node B (eNB) of evolution) goes up and sends a kind of detection waveform (being frequency pilot sign).This eNB measures the channel quality between this UE and this eNB immediately.Fig. 2 shows according to the traditional UL detection process in the tdd mode of time domain.In order to begin this UL detection process, this eNB request (for example using the control channel 12 of first down link (DL) 14) this UE surveys the part that this eNB may be used for during DL16 subsequently data being sent to this frequency band of UE.In addition, this eNB can ask this UE to survey whole frequency band in the concrete situation.Then, send one among the UL 20 of UE on the subcarrier of this eNB request and survey waveform 18.In this way, eNB obtains CQI from survey waveform 18.This eNB uses this CQI to make MRP and wave beam forms (being used for the TDD system).Specifically, according to the channel parameter that obtains, this eNB redistributes the DL resource at UE, makes UE be operated in those subcarriers with better state.At the TDD system, this eNB also produces the transmission weighting, and uses at the weighting of line computation in a plurality of days and carry out wave beam formation.
Except above-mentioned UL SRS processing procedure, this 3GPP standard is also advised a self adaptation RS processing procedure.For this self adaptation RS processing procedure (being also referred to as Adaptive Transmission bandwidth method), two transmission bandwidth-Payloads and pilot tone have been defined.The Payload transmission bandwidth is represented the maximum transmission bandwidth of this subsequent data passage.This bandwidth depends on UE capacity, traffic load and/or required data rate.The maximum transmission bandwidth of this pilot channel of pilot transmission bandwidth pointer concerning this CQI measures.This bandwidth is equal to or greater than the Payload transmission bandwidth.In addition, determine this pilot transmission bandwidth according to channel status, UE capacity and traffic load.The channel status of example comprises that path loss, signal-interference add noise power ratio (SINR) or the like.Based on the report the information that relates to UE, this eNB bandwidth assignment to each UE that is used for corresponding to pilot channel.According to the frequency band of this distribution, the UE pilot signal transmitted.Fig. 3 shows pilot channel and sends 30 and the example of the data channel assignment of the frequency domain channel planned based on foundation adaptive pilot transmission bandwidth.
UL SRS and self adaptation RS both design and realize a UL RS, measure so that carry out CQI.According to the bandwidth of pilot channel, this UL SRS scheme has represented some shortcoming.Measure (promptly surveying) if broadband pilot channel is used for CQI, then cause the potential reduction of flow owing to the excessive use of RS resource.And the processing procedure of UL SRS causes the substantial interference to another cell, therefore causes because the CQI measure error that the pilot power density that reduces causes.In contrast, measure (promptly surveying) if the narrowband pilot channel is used for CQI, then eNB can not optimize the resource allocation on whole bandwidth.
This self adaptation RS scheme also represents some shortcoming.Measure (promptly surveying) if self adaptation frequency band pilot channel is used for CQI, then can not correctly judge the pilot bandwidth of distributing at UE owing to this eNB can not learn the definite path loss of each UE and SINR this eNB that makes inequality of UL and DL.
Summary of the invention
The invention describes a kind of system and method that is used for broad band multicarrier communication.This system comprises: base station, subscriber equipment, and transmission plan manager.This base station sends a downlink reference signals.This subscriber equipment receives this downlink reference signals, and obtains to be used for the channel condition information of at least one available band within a downlink band from this downlink reference signals.This transmission plan manager is coupled to this base station, and comes allocation of radio resources to this subscriber equipment according to the channel status from this subscriber equipment feedback.This channel state feedback is at least in part based on this channel condition information.The embodiment of this system and the method followed provides the detection performance that Comparatively speaking improves with traditional uplink sounding technology.In addition, because the resource that the resource that this downlink reference signals takies takies less than this uplink sounding technology, so can realize higher efficiency of transmission.And the embodiment that implements the down link Detection Techniques will help to save control signal.
Description of drawings
From the following detailed description of mode to the principle of the invention with example in conjunction with the accompanying drawings, it is obvious that other aspects and advantages of the present invention will become.
Fig. 1 illustrates an example of the channel state variations in traditional broadband system.
Fig. 2 shows according to the traditional uplink sounding processing procedure in the TDD mode of time domain.
Fig. 3 shows the traditional pilot channel transmission of the frequency domain channel of planning based on foundation adaptive pilot transmission bandwidth and the example of data channel assignment.
Fig. 4 illustrates the schematic block diagram of a wireless communication system embodiment that can realize the broadband multichannel system.
Fig. 5 illustrates the schematic block diagram of more specific embodiment of transmission resource manager of the wireless communication system of Fig. 4.
Fig. 6 illustrates the schematic block diagram of more specific embodiment of subscriber equipment of the wireless communication system of Fig. 4.
Fig. 7 is illustrated in and sends the embodiment that the downlink reference signals down link is surveyed processing procedure on the whole downlink band.
Fig. 8 A and 8B are illustrated in the embodiment that another down link of sending downlink reference signals on the selection frequency band of downlink band is surveyed.
Fig. 9 illustrates the schematic flow diagram that is used for carrying out at wireless communication system the embodiment of a kind of method that down link surveys.
Figure 10 illustrates and is used to use whole downlink band to carry out the schematic flow diagram of the other method embodiment of down link detection.
Figure 11 illustrates the schematic flow diagram that the selection frequency that is used to use downlink band is carried out the other method embodiment that down link surveys.
Run through this specification, similar reference number can be used to show similar assembly.
Embodiment
According to an embodiment, be used for comprising use a kind of down link (DL) reference signal (RS), rather than use traditional up link (UL) RS in a kind of technology of broad band multicarrier system distributing radio resource.Though traditional base station (eNB) uses the special-purpose RS that is for example surveyed RS (SRS) by the UL of 3GPP LTE suggestion, current 3GPP UL SRS only is supported in the MRP within the little frequency domain scope, and the too many UL SRS of usage will significantly reduce efficiency of transmission.Therefore, the embodiment of DL RS scheme and corresponding frame structure are implemented the MRP that is supported within the whole available frequency domain that is used for the broad band multicarrier system of 3GPP LTE for example.As a kind of content of buzz word, DL RS described here is also referred to as auxiliary RS (ARS).
In one embodiment, eNB uses a kind of broadcasting format on the broadband to send DLRS.Can go up at whole DL frequency band (being the frequency spectrum of the whole DL of being used for transfer of data) and send DL RS, promptly on the DL frequency band of selecting, send DL RS.Mobile radio station, or subscriber equipment (UE) can obtain the channel condition information (CSI) at whole applicable DL frequency bands immediately, and feed back to eNB presenting channel status (for example this CQI (CQI) or preferred frequency band), make this eNB this Radio Resource of reallocating.
Fig. 4 illustrates the schematic block diagram of the embodiment of a wireless communication system 100 can realizing the broadband multichannel system.The wireless communication system 100 that illustrates comprises base station 102, or the Node B (eNB) of evolving, and a plurality of mobile radio station 104, or subscriber equipment (UE).Wireless communication system 100 can be operated in different mode, comprises multi-user's multiple-input and multiple-output (MU-MIMO) pattern.
Though eNB 102 can comprise more than four antennas 106, eNB 102 in the illustrated embodiment comprises four antennas 106.ENB 102 also comprises a transmission resource manager 110.Usually, eNB 102 is responsible for being used to manage the transfer resource of this wireless communication system 100.Fig. 5 shows an example of transmission resource manager 110 and below will describe in more detail.
In one embodiment, UE 104 is radio communication mobile stations of supporting by the regulation radio operation computing in the 3GPP LTE standard.Though UE 104 is not limited to two antennas 108 (for example UE 104 can comprise more than two antennas 108), UE 104 has one or two antenna 108.Other embodiment of wireless communication system 100 can implement to be used for for example other wireless solution of the broad band multicarrier system of WiMAX.
For programming wireless resource in wireless communication system 100, this eNB 102 sends to one or more UE 104 to DL RS.This UE 104 receives these DL RS and obtain channel condition information (CSI) from this DL RS and is used at least one available band within the DL frequency band.This UE 104 produces at least in part the channel state feedback based on this CSI immediately, and this channel state feedback is sent to eNB 102.As explained in further detail below, this channel state feedback can be the CQI (CQI) that quantizes, and is used for the one or more available frequency band within the DL frequency band.In addition, this channel state feedback can be the CQI that is used for whole frequencies of this DL frequency band.In certain embodiments, this channel state feedback is preferred Radio Resource designator, and indication is used for the preferred wireless resource of this transmission UE 104.Other embodiment can use the channel state feedback from other type of 104 to eNB 102.This eNB 102 uses this channel state feedback to come allocation of radio resources to sending UE 102 immediately.For example, eNB102 can respond from the channel state feedback of the indication best subcarrier of UE 102 and distribute a preferred subcarrier to this UE 102.
Fig. 5 illustrates the schematic block diagram of more specific embodiment of transmission resource manager 110 of the wireless communication system 100 of Fig. 4.Though the transmission resource manager of describing 110 comprises several functional blocks described here, other embodiment of this transmission resource manager 110 can comprise more or less functional block and realize more or less function.
The transmission resource manager 110 that illustrates comprises resource group manager 112, day wire manager 114, transmission plan manager 116 and DL RS manager 118.Transmission plan manager 110 is coupled to eNB 102.Usually, transmission resource manager 110 realizes allocation of radio resources to UE 104 according to the channel state feedback from UE 104.
In one embodiment, resource group manager 112 is responsible for sign and can be supplied used resource or the resource group of baseband transmission.Specifically, resource group manager 112 at least one available band within this DL frequency band of sign.Resource or resource group can relate to group of frequencies and/or the group of the time in the time domain in frequency domain.
In one embodiment, day wire manager 114 is responsible for the antenna 106 that sign can supply the used eNB 102 of baseband transmission.Antenna 106 sends to one or more UE 104 to DL RS.
In one embodiment, transmission plan manager 116 is responsible for setting up the transmission plan at UE 104.Transmission plan not only defined available resources or resource group distribution, but also defined the selection of the available antenna 106 in these UE 104.More specifically, transmission plan manager 116 is realized allocation of radio resources to UE104 according to the channel state feedback from UE 104.
In one embodiment, DL RS manager 118 is in charge of the generation of this DL RS signal.In addition, DL RS manager 118 is responsible for the announcement information of this DL RS is provided to this UE104.In order to realize this function, the DL RS manager 118 that illustrates comprises a DL frequency management device 120 and a notification manager 122.
In one embodiment, DL frequency management device 120 selects at least one frequency band of some available band as selecting frequency band, is used for the transmission of this DL RS to UE 104.Though other embodiment of DL frequency management device 120 uses corresponding to one or more selection frequency band less than this whole DL frequency band, some embodiment of this DL frequency management device 120 selects whole DL frequency band as selecting frequency band to be used for the transmission (as what below will in more detail describe shown in Figure 7) of this DL RS to this UE 104.In other words, select frequency band narrower than whole DL frequency band.Wherein this DL frequency management device 120 sends this DL RS on more than one selection frequency band, and these a plurality of selection frequency bands can be non-adjacent selection frequency bands.
In addition, in one embodiment, DL frequency management device 120 sends (for example sending continuously) at the difference of DL RS and selects different frequency bands, or the frequency band group.As an example, DL frequency management device 120 can select the first group selection frequency band to be used for DL RS transmission, and selects remaining frequency band (i.e. frequency band except that first selection frequency band) to be used for another DL RS transmission subsequently subsequently.In this way, this DL frequency management device 120 can be chosen in whole DL frequency band on the time course-be used for different DL RS with different timing to send.This example is shown in Fig. 8 A and the 8B and be described in greater detail below.
Notification manager 122 is used to notify this UE 104 to make DL RS by this eNB 102 to send employed selection frequency band.In one embodiment, the notice of 102 one or more DL frequency bands of selecting of eNB is delivered to the UE 104 in the DL control channel.In order to carry out such notification, this notification manager 122 comprises a control-signals generator 124.Specifically, control-signals generator 124 produces the announcement information that is used for sending in the DL control signal UE 104, notifies this one or several of transmission that is used for DL RS of this UE 104 to select frequency band.
In another embodiment, eNB 102 with send with DL RS or as the specific code sequence of this DL RS part the notice of one or several DL frequency band of selecting is delivered to UE 104.UE 104 uses correlation computations for example or other known code recognition technology to discern this specific code sequence with this DL RS immediately.In order to realize such notification, this notification manager 122 comprises a sign indicating number generator 126.Specifically, this yard generator 126 produces for this specific code sequence that sends to this UE 104 with this DL RS, notifies this one or several of transmission that is used for DL RS of this UE 104 to select frequency band.
Fig. 6 illustrates the schematic block diagram of more specific embodiment of UE 104 of the wireless communication system 100 of Fig. 4.Though the UE 104 that describes comprises several functional blocks described here, other embodiment of this UE104 can comprise more or less functional block and realize more or less function.
The UE 104 that illustrates comprises channel status manager 132, and this channel status manager comprises CQI (CQI) generator 134, and channel feedback manager 136.In one embodiment, the channel status manager obtains the CSI of available band from DL RS.As an example, channel status manager 132 can call CQI generator 134 and produce the CQI that is used for one or more frequency band.Although CQI is described to a kind of form of CSI, the CS I of other formation can be used to set up a transmission plan.Be noted that in addition this DL CSI can be used to estimate this UL CSI owing to the channel reciprocity in the TDD system.
Channel feedback manager 136 produces channel state feedback to deliver to this eNB102 according to CSI.Because this DL RS scheme depends on the embodiment that is wherein at first obtained channel characteristics by UE 104, notifies this eNB102 information about DL CSI so UE 104 sends to this eNB 102 to channel state feedback.In this way, eNB 102 receives DL CSI information so that be used in the planning that the Radio Resource that is used for UE 104 is carried out.
According to the present embodiment of UE 104, channel feedback manager 136 can be delivered to eNB 102 to different kinds of information as channel state feedback.In one embodiment, channel feedback manager 136 is delivered to eNB 102 to the CQI that quantizes, and makes eNB 102 to come assigned radio resource according to CQI.But owing to comprise that the CQI of whole bandwidth of this DL RS is delivered to eNB 102 from UE 104, this type of feedback and distribution may the production essential information.In addition, channel feedback manager 136 can send and quantize CQI and be used for than the little bandwidth of whole bandwidth that comprises this DL RS.
In another embodiment, channel feedback manager 136 is identified for one or more preferred wireless resource of UE 104 according to the CQI that is produced by CQI generator 134.This UE104 sends to the preferred wireless resource (comparing with the existing resource that takies) that eNB 102 indicates this UE 104 to channel state feedback immediately.According to this preferred wireless resource indicator that is included in this channel status feedback, this eNB 102 carries out MRP subsequently.This preferred wireless resource indicator is the indication that is used for the preferred wireless resource of UE 104.This feedback and allocative decision may consume a limited bit number.
As above-mentioned detailed description, there are two alternative approach to be used for eNB 102 this DL RS bandwidth is set.In one embodiment, eNB 102 sends DL RS on whole DL frequency band.In addition, this eNB 102 is sending this DL RS on less than the DL frequency band of one or more selection of whole DL frequency band.As the example that a back frequency is selected, this eNB 102 can not satisfy this DL RS of transmission on the selection frequency band of existing transmission quality.
Fig. 7 illustrates the embodiment that DL surveys processing procedure 140, and this DL surveys processing procedure 140 and send DL RS 142 on whole DL frequency band.Specifically, this DL RS 142 is sent to UE104 from eNB 102 during the UL cycle 146 DL cycle 144 formerly.By send this DL RS 142 on whole DL bandwidth, this UE 104 can monitor the CQI on whole DL frequency band.Though come to send DL RS 142 yet be noted that eNB 102 can be implemented on whole DL frequency band, some embodiment may cause the efficiency of transmission that reduces and/or the planning complexity of increase.For example, the subcarrier of one of UE 104 in " good " transmit status can be reallocated to other UE104 in this wireless communication system 100.
Fig. 8 A and 8B illustrate the embodiment that another DL surveys processing procedure 140a and 140b, and this surveys processing procedure 140a and 140b sends DL RS 142 on the selection frequency band of DL frequency band.Send for each DL RS, this non-selected frequency band is not redistributed by hypothesis.For example, non-selected subcarrier can have " good " transmit status in this wireless communication system 100 with one of UE 104.In this way, UE 104 can be restricted to this selection frequency band to supervision.In addition, UE 104 may be used for corresponding to Radio Resource, but is not used in the Radio Resource corresponding to this non-selected frequency band.
In one embodiment, establish the minimum bandwidth of this DL RS 142 by eNB 102.As an example, the minimum bandwidth of DL RS 142 can be set at 375KHz.As another example, the minimum bandwidth of this DL RS 142 can be set at 1.25MHz.Other embodiment can use other minimum bandwidth.
In one embodiment, by send DL RS 142 on the frequency band of alternate selection, this DL surveys processing procedure 140a and 140b can cover whole DL frequency band.For example, Fig. 8 A illustrates this DL RS 142 and sends on low and medium-high frequency band, and Fig. 8 B illustrates subsequently DL RS 142 and sends on the low and high frequency band in remaining.In this way, eNB 102 can cover the whole DL frequency band in two or more orders (for example continuous) DL RS transmission.
Fig. 9 illustrates the schematic flow diagram that is used for carrying out at wireless communication system 100 embodiment of a kind of method 150 that DL surveys.Though this DL detection method 150 relates to that the wireless communication system 100 of Fig. 1 describes, and can realize other embodiment in conjunction with other wireless communication system.At frame 152, eNB 102 sends to UE 104 to a DL RS.At frame 154, UE 104 obtains the CSI of this channel or comprises the DL frequency band of the selection of this DL RS.At frame 156, this UE 104 sends to eNB 102 to channel state feedback.As mentioned above, the embodiment of this channel state feedback does not comprise the DL frequency band of selection with limiting to and/or is used for the preferred Radio Resource designator of this corresponding UE 104.At frame 158, eNB 102 according to the channel state feedback that receives from each UE 104 and with one or more allocation of radio resources to UE 104.Finish the DL detection method 150 of description subsequently.
Other embodiment of DL detection method 150 can comprise and relate to other operation of carrying out MRP in wireless communication system 100.For example, some embodiment of DL detection method 150 comprises and notifies this UE 104 a DL frequency band that is used for the selection that this DL RS sends.Specifically, eNB 102 can send to UE 104 to a DL control signal.In addition, eNB 102 can send the private code that combines with DL RS.
Figure 10 illustrates the schematic flow diagram of other embodiment of the method 150 that is used for the DL detection of using whole DL frequency band.At frame 152a, on the whole frequency of eNB 102 in this DL frequency band a DL RS is sent to UE 104.UE 104 obtains this CSI subsequently as described above.Subsequently, the CQI that is used for whole selection frequency band is sent to eNB102, make this eNB 102 to be assigned to UE 104 to Radio Resource as described above at this UE 104 of frame 156a.Finish the embodiment of the DL detection method 150 of description subsequently.
Figure 11 illustrates the schematic flow diagram that the selection frequency band that uses the DL frequency band is used for other embodiment of a kind of method 150 that DL surveys.At frame 152b, on the DL frequency of the selection of eNB 102 in whole DL frequency band a DL RS is sent to UE 104.This UE 104 obtains CSI subsequently as described above.Subsequently, determine a preferred Radio Resource that is used for each UE104 at this UE 104 of frame 156b, and preferred Radio Resource designator is sent to this eNB102, make this eNB 102 to arrive UE104 to this preferred allocation of radio resources as described above.Finish the embodiment of the DL detection method 150 of description subsequently.
The embodiment of DL RS scheme and frame structure is used in projected resources in the broad band multicarrier system of any kind.In addition, the embodiment of this DL RS scheme and frame structure is used in projected resources on the whole DL frequency band.And the embodiment of DL RS scheme and frame structure can keep quite high efficiency of transmission, accounts for quite few resource, and/or restriction is used to notify the influence of control signal of the DL frequency band of UE 104 these selections.
Though described and shown specific embodiments of the invention, the present invention is not limited to the design at this description and concrete form that illustrates or parts.The present invention is only defined by claim.
Claims (20)
1. method that is used in broad band multicarrier system distributing radio resource, the method comprising the steps of:
Send to subscriber equipment this broad band multicarrier system from a base station downlink reference signals;
From this downlink reference signals, obtain to be used for channel condition information at least one available band of the downlink band of this broad band multicarrier system; And
According to from the channel state feedback of this subscriber equipment and will be in the allocation of radio resources in this broad band multicarrier system to this base station, wherein this channel state feedback be to small part based on this channel condition information.
2. send this downlink reference signals according to the process of claim 1 wherein that the step that sends this downlink reference signals is included on the whole downlink band of this broad band multicarrier system.
3. send this downlink reference signals according to the process of claim 1 wherein that the step that sends this downlink reference signals is included on the selection frequency band of this downlink band, wherein should select frequency band narrower than whole downlink band.
4. according to the method for claim 3, the step that wherein sends this downlink reference signals further is included on a plurality of non-adjacent selection frequency band of this downlink band and sends this downlink reference signals.
5. according to the method for claim 4, further comprise step: send another downlink reference signals in the transmission of the downlink reference signals subsequently at least one all the other frequency band a plurality of non-adjacent selection frequency bands except that this, wherein the combination of this selection frequency band and these at least one all the other frequency bands covers the whole downlink band of this broad band multicarrier system.
6. according to the method for claim 1, further comprise step: downlink control signal, send announcement information and notify this subscriber equipment with a selection frequency band of this downlink reference signals from this base station to this subscriber equipment.
7. according to the method for claim 1, further comprise step: in this downlink reference signals, send a specific code sequence and notify this subscriber equipment with a selection frequency band of this downlink reference signals.
8. according to the method for claim 1, further comprise step: the channel state feedback from this subscriber equipment is sent to this base station, and the step that wherein obtains channel condition information from this downlink reference signals comprises with this subscriber equipment obtain this channel condition information from this downlink reference signals.
9. method according to Claim 8 further comprises step:
Come the quantized channel quality indicator with this subscriber equipment at the whole subcarriers that comprise this downlink reference signals; With
This CQI at whole subcarriers from this subscriber equipment is sent to this base station.
10. method according to Claim 8 further comprises step:
Quantize a CQI with this subscriber equipment at a subcarrier that comprises this downlink reference signals;
Be identified for the preferred wireless resource of this subscriber equipment according to this CQI; With
A preferred wireless resource indicator from this subscriber equipment is sent to this base station, so that indicate the preferred wireless resource of this subscriber equipment to this base station.
11. a system that is used for broad band multicarrier communication, this system comprises:
The base station is used to send a downlink reference signals;
Subscriber equipment, the channel condition information that is used for receiving this downlink reference signals and obtains to be used at least one available band within a downlink band from this downlink reference signals; With
The transmission plan manager, it is coupled to this base station, this transmission plan manager according to from the channel state feedback of this subscriber equipment and allocation of radio resources to this subscriber equipment, wherein this channel state feedback is at least in part based on this channel condition information.
12. according to the system of claim 11, wherein this subscriber equipment comprises:
The channel status manager is used for obtaining this channel condition information from this downlink reference signals; With
The channel feedback manager, it is coupled to this channel status manager, and this channel feedback manager is used for producing this channel state feedback according to this channel condition information.
13. system according to claim 12, wherein this subscriber equipment also comprises the CQI generator that is coupled to this channel status manager, and this CQI generator quantizes a CQI at least one available band in this downlink band.
14. according to the system of claim 13, wherein:
This channel feedback manager is further constituted the preferred wireless resource of coming to be identified for according to this CQI this subscriber equipment; And
This subscriber equipment is further constituted sends to this base station with a preferred wireless resource indicator, and wherein this preferred wireless resource indicator is indicated the preferred wireless resource of this subscriber equipment.
15. according to the system of claim 11, wherein this base station comprises:
The resource group manager is used for being identified at least one available band of this downlink band;
The down-link frequencies manager, it is coupled to this resource group manager, and this down-link frequencies manager is used at least one frequency band of this available band is selected as the selection frequency band that is used for this downlink reference signals is sent to this subscriber equipment; With
Notification manager, it is coupled to this down-link frequencies manager, and this notification manager is used for realizing notifying this subscriber equipment this selection frequency band.
16. according to the system of claim 15, wherein this down-link frequencies manager is selected whole downlink band as the selection frequency band that is used for this downlink reference signals is sent to this subscriber equipment by further formation.
17. system according to claim 15, wherein this base station also comprises the control-signals generator that is coupled to this notification manager, this control-signals generator is used for being created in the announcement information that downlink control signal sends to this subscriber equipment, so that notify this subscriber equipment this selection frequency band that is used to send downlink reference signals.
18. system according to claim 15, wherein this base station also comprises the sign indicating number generator that is coupled to this notification manager, this yard generator is used to produce the specific code sequence that sends to this subscriber equipment with this downlink reference signals, so that notify this subscriber equipment this selection frequency band that is used to send this downlink reference signals.
19. an equipment that is used as the base station in the broad band multicarrier system, this equipment comprises:
Antenna is used to send a downlink reference signals;
The down-link frequencies manager, it is coupled to this antenna, and this down-link frequencies manager is used for selecting as the selection frequency band that is used to send this downlink reference signals at least one frequency band of a downlink band; With
The transmission plan manager, it is coupled to this antenna, and this transmission plan manager comes the receive channel state feedback through this antenna, and divides the Radio Resource that is used in subscriber equipment according to this channel state feedback.
20. according to the equipment of claim 19, also comprise the notification manager that is coupled to this down-link frequencies manager, this notification manager is used for realizing this selection frequency band that is used to transmit this downlink reference signals is notified to this subscriber equipment by antenna.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101514337A CN101409883A (en) | 2007-10-12 | 2007-10-12 | Method and system for planning down link auxiliary reference signal in multi-carrier wideband system |
| PCT/IB2008/054186 WO2009047740A2 (en) | 2007-10-12 | 2008-10-10 | Downlink assistant reference signal for resource scheduling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101514337A CN101409883A (en) | 2007-10-12 | 2007-10-12 | Method and system for planning down link auxiliary reference signal in multi-carrier wideband system |
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| CN101409883A true CN101409883A (en) | 2009-04-15 |
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| CNA2007101514337A Pending CN101409883A (en) | 2007-10-12 | 2007-10-12 | Method and system for planning down link auxiliary reference signal in multi-carrier wideband system |
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| CN (1) | CN101409883A (en) |
| WO (1) | WO2009047740A2 (en) |
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| CN102006634A (en) * | 2009-09-03 | 2011-04-06 | 大唐移动通信设备有限公司 | Method and equipment for reporting and receiving channel information of multi-carrier system |
| CN102064920A (en) * | 2010-12-31 | 2011-05-18 | 大唐移动通信设备有限公司 | Method and device for acquiring CQI (Channel Quality Indicator) information |
| CN102461240A (en) * | 2009-06-10 | 2012-05-16 | 高通股份有限公司 | Joint parameter determination and separate cqi generation reporting for lte-a multicarrier |
| WO2013173987A1 (en) * | 2012-05-23 | 2013-11-28 | Telefonaktiebolaget L M Ericsson (Publ) | Radio resource adaptation method and associated wireless communication devices |
| CN104158574A (en) * | 2009-08-14 | 2014-11-19 | Lg电子株式会社 | Method and apparatus for transmitting downlink reference signal in wireless communication system that supports multiple antennas |
| CN107070518A (en) * | 2010-07-23 | 2017-08-18 | 英特尔公司 | It is configured to the method for the access point and management station administration group of station group management |
| USRE48016E1 (en) | 2009-08-14 | 2020-05-26 | Lg Electronics Inc. | Method and apparatus for transmitting downlink reference signal in wireless communication system that supports multiple antennas |
| CN114365447A (en) * | 2019-07-09 | 2022-04-15 | 高通股份有限公司 | Event triggered reference signal transmission for carrier selection |
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| CN103037520A (en) * | 2011-03-25 | 2013-04-10 | 北京新岸线无线技术有限公司 | Resource scheduling method and resource scheduling device |
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| US20050207367A1 (en) * | 2004-03-22 | 2005-09-22 | Onggosanusi Eko N | Method for channel quality indicator computation and feedback in a multi-carrier communications system |
| US8571132B2 (en) * | 2004-12-22 | 2013-10-29 | Qualcomm Incorporated | Constrained hopping in wireless communication systems |
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- 2007-10-12 CN CNA2007101514337A patent/CN101409883A/en active Pending
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2008
- 2008-10-10 WO PCT/IB2008/054186 patent/WO2009047740A2/en active Application Filing
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| CN102461240A (en) * | 2009-06-10 | 2012-05-16 | 高通股份有限公司 | Joint parameter determination and separate cqi generation reporting for lte-a multicarrier |
| CN102461240B (en) * | 2009-06-10 | 2014-12-17 | 高通股份有限公司 | Joint parameter determination and separate cqi generation reporting for lte-a multicarrier |
| US10135598B2 (en) | 2009-06-10 | 2018-11-20 | Qualcomm Incorporated | Joint parameter determination and separate cqi generation reporting for LTE-A multicarrier |
| CN104158574B (en) * | 2009-08-14 | 2017-09-26 | Lg电子株式会社 | The method and device of communicating downlink reference signal in the wireless communication system for supporting multiple antennas |
| USRE49171E1 (en) | 2009-08-14 | 2022-08-09 | Lg Electronics Inc. | Method and apparatus for transmitting downlink reference signal in wireless communication system that supports multiple antennas |
| USRE48016E1 (en) | 2009-08-14 | 2020-05-26 | Lg Electronics Inc. | Method and apparatus for transmitting downlink reference signal in wireless communication system that supports multiple antennas |
| CN104158574A (en) * | 2009-08-14 | 2014-11-19 | Lg电子株式会社 | Method and apparatus for transmitting downlink reference signal in wireless communication system that supports multiple antennas |
| CN102006634B (en) * | 2009-09-03 | 2013-09-04 | 电信科学技术研究院 | Method and equipment for reporting and receiving channel information of multi-carrier system |
| CN102006634A (en) * | 2009-09-03 | 2011-04-06 | 大唐移动通信设备有限公司 | Method and equipment for reporting and receiving channel information of multi-carrier system |
| CN107070518A (en) * | 2010-07-23 | 2017-08-18 | 英特尔公司 | It is configured to the method for the access point and management station administration group of station group management |
| CN107070518B (en) * | 2010-07-23 | 2021-02-09 | 英特尔公司 | Configuring access points for station group management |
| CN102064920A (en) * | 2010-12-31 | 2011-05-18 | 大唐移动通信设备有限公司 | Method and device for acquiring CQI (Channel Quality Indicator) information |
| US9999061B2 (en) | 2012-05-23 | 2018-06-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Radio resource adaptation method and associated wireless communication devices |
| US9642151B2 (en) | 2012-05-23 | 2017-05-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Radio resource adaptation method and associated wireless communication devices |
| WO2013173987A1 (en) * | 2012-05-23 | 2013-11-28 | Telefonaktiebolaget L M Ericsson (Publ) | Radio resource adaptation method and associated wireless communication devices |
| CN114365447A (en) * | 2019-07-09 | 2022-04-15 | 高通股份有限公司 | Event triggered reference signal transmission for carrier selection |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009047740A3 (en) | 2009-05-28 |
| WO2009047740A2 (en) | 2009-04-16 |
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