CN101686077A - Method and device for multi-point synergetic transmission - Google Patents

Method and device for multi-point synergetic transmission Download PDF

Info

Publication number
CN101686077A
CN101686077A CN200810223357A CN200810223357A CN101686077A CN 101686077 A CN101686077 A CN 101686077A CN 200810223357 A CN200810223357 A CN 200810223357A CN 200810223357 A CN200810223357 A CN 200810223357A CN 101686077 A CN101686077 A CN 101686077A
Authority
CN
China
Prior art keywords
edge ue
described
district
sub
ue
Prior art date
Application number
CN200810223357A
Other languages
Chinese (zh)
Other versions
CN101686077B (en
Inventor
缪德山
高秋彬
拉盖施
索士强
谢永斌
Original Assignee
大唐移动通信设备有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 大唐移动通信设备有限公司 filed Critical 大唐移动通信设备有限公司
Priority to CN200810223357A priority Critical patent/CN101686077B/en
Publication of CN101686077A publication Critical patent/CN101686077A/en
Application granted granted Critical
Publication of CN101686077B publication Critical patent/CN101686077B/en

Links

Abstract

The invention discloses a method for multi-point synergetic transmission, which is used for solving the problem in the prior art that a large quantity of communication system resources are occupied ina multi-point synergetic transmission process. The method comprises the following steps: according to the pilot signal intensity of ambient cells reported by an edge terminal (UE), determining at least one cell which transmits downlink data to the edge UE and the resources occupied by the edge UE in the corresponding cell; according to the determined uplink channel information or direction information of the edge UE in each cell, calculating a beamforming weight vector of the downlink data of the UE in each cell; and in each cell, according to the corresponding beamforming weight vector, performing beamforming on the downlink data transmitted by the edge UE, and transmitting control instructions and the beamformed downlink data to the edge UE. The invention also discloses a device for themulti-point synergetic transmission.

Description

A kind of method of multi-point cooperative transmission and device

Technical field

The present invention relates to communication technical field, relate in particular to a kind of method and device of multi-point cooperative transmission.

Background technology

Long Term Evolution (LTE, Long Term Evolution) system supports descending wave beam forming transmission.Wherein wave beam forming is meant that the base station is according to terminal (UE, User Equipment) information that self estimates of feedack or base station, on each physical antenna of transmitting terminal, introduce different weighted values, the signal that is transmitted into each terminal is concentrated in the narrower beam area.Adopt the method for this wave beam forming can strengthen the UE received signal to noise ratio, simultaneously,, therefore, also can reduce the interference of other UE outside this angle direction because the energy of emission all concentrates in the narrower beam angle scope.

The multi-point cooperative transmission technology is thought a kind of effective ways that improve cell edge throughput and sub-district average throughput by third generation partner program Long Term Evolution (3GPP LTE-Advanced, 3rd Generation Partnership Project Advanced) project.At present, when a plurality of transmission points that are positioned at different districts are worked in coordination with transmission to edge UE, require the minizone to share the data message that sends to UE, and the descending channel information between a plurality of transmission point and the UE.For obtaining descending channel information, collaborative sub-district sends the multi-district pilots signal, and UE feeds back to network terminal after estimating descending channel information again.The feedback of multi-district pilots signal and descending channel information all can take the resource of system greatly, increases the expense of system.And,, also not have at present the method for shaping and concrete multi-point cooperative transmission for time division duplex (TDD, Time Division Duplex) system.

Summary of the invention

In view of this, the embodiment of the invention provides a kind of method of multi-point cooperative transmission, in the process that solves multi-point cooperative transmission in the prior art, takies the big problem of telecommunication system resources.

The embodiment of the invention provides a kind of method of multi-point cooperative transmission, comprising:

The pilot signal strength of the peripheral cell that reports according to edge UE determines to send to described edge UE at least one sub-district of downlink data, and the resource that takies in respective cell of described edge UE;

According to uplink channel information or the directional information of described edge UE in each sub-district of determining, calculate the weighing vector of the wave beam forming of the downlink data of described edge UE in each sub-district;

According to the weighing vector of the wave beam forming of correspondence, the downlink data that described edge UE is sent carries out wave beam forming in each sub-district;

To described edge UE send control signaling and wave beam forming after downlink data, described control signaling comprises the resource that described edge UE takies in respective cell.

The embodiment of the invention provides a kind of device of multi-point cooperative transmission, comprising:

Determining unit is used for the pilot signal strength of the peripheral cell that reports according to edge UE, determines to send to described edge UE at least one sub-district of downlink data, and the resource that takies in respective cell of described edge UE;

Computing unit is used for uplink channel information or directional information according to described edge UE in each sub-district of determining, calculates the weighing vector of the wave beam forming of the downlink data of described UE in each sub-district;

The wave beam forming unit is used in each sub-district the weighing vector according to the wave beam forming of correspondence, and the downlink data that described edge UE is sent carries out wave beam forming;

Transmitting element, be used for to described edge UE send control signaling and wave beam forming after downlink data, described control signaling comprises the resource that described edge UE takies in respective cell.

The pilot signal strength of the peripheral cell that network terminal reports according to edge UE in the embodiment of the invention, determine to send at least one sub-district of downlink data to described edge UE, and the resource that in respective cell, takies of described edge UE, uplink channel information or directional information according to described edge UE in each sub-district of determining, calculate the weighing vector of the wave beam forming of the downlink data of described UE in each sub-district, in each sub-district according to the weighing vector of the wave beam forming of correspondence, the downlink data that described edge UE is sent carries out wave beam forming, to described edge UE send control signaling and wave beam forming after data, described control signaling comprises the resource that described edge UE takies in respective cell, thereby in the process of multi-point cooperative transmission, UE only need feed back a spot of information, after downlink data carried out wave beam forming, improve the throughput of cell edge UE, further improve the average throughput of whole sub-district.

Description of drawings

The method flow diagram of Fig. 1 embodiment of the invention multi-point cooperative transmission;

Fig. 2 is the method flow diagram of the embodiment of the invention one;

Fig. 3 is the schematic diagram of embodiment of the invention cooperation district;

Fig. 4 is the method flow diagram of the embodiment of the invention two;

Fig. 5 is the method flow diagram of the embodiment of the invention three;

Fig. 6 is the structure drawing of device of inventive embodiments multi-point cooperative transmission.

Embodiment

The embodiment of the invention has provided the method for carrying out multi-point cooperative transmission between many sub-districts on the basis of existing LTE system, referring to Fig. 1, this method comprises:

Step 101: the pilot signal strength of the peripheral cell that reports according to edge UE, determine at least one sub-district of described edge UE, and the resource that in respective cell, takies of described edge UE, described resource comprises time resource, frequency resource.

Here, the pilot signal strength of the peripheral cell that network terminal can be at first reports according to edge UE, determine the candidate set of described edge UE, uplink pilot signal (the SRS that sends according to edge UE then, Sounding Reference Signal), obtain the channel quality indication (CQI of UE described in each candidate cell, Channel Quality Indicator) information, last CQI information according to UE described in described each candidate cell, from described candidate set, determine to send the sub-district of data to described edge UE, and the resource that in respective cell, takies of described edge UE.Here, comprise at least one sub-district in the set of cells.

In this step, the pilot signal strength of the peripheral cell that network terminal also can be directly reports according to edge UE is determined at least one sub-district of described edge UE, and the resource that takies in respective cell of described edge UE.

Step 102:, calculate the weighing vector of each sub-district to the wave beam forming of the downlink data of described UE according to uplink channel information or the directional information of the described UE in each definite sub-district of step 101.Its concrete implementation procedure has multiple, comprising:

At first the uplink SRS that sends according to UE is estimated the uplink channel information of each sub-district to described UE, then according to the reciprocity of TDD system channel, obtain described each sub-district to each sub-district of the uplink channel information correspondence of described UE descending channel information, calculate the weighing vector of each corresponding sub-district the wave beam forming of described UE to described UE.Perhaps,

The signal power of the peripheral cell that reports according to UE at first, and the geographical location information of described peripheral cell, obtain the directional information of UE in each sub-district,, calculate the weighing vector of corresponding each sub-district the wave beam forming of described UE then according to the directional information of UE in described each sub-district.Here, directional information is to be calculated by the Serving cell of described UE, and Serving cell is notified other sub-districts then.Perhaps,

At first, obtain the directional information of UE in each sub-district,, calculate the weighing vector of corresponding each sub-district the wave beam forming of described UE then according to the directional information of UE in described each sub-district according to the uplink SRS of UE transmission.

Step 103: the weighing vector of the wave beam forming that obtains according to step 102, in each sub-district of correspondence, the downlink data that UE is sent carries out wave beam forming.

Step 104: to UE send control signaling and wave beam forming after downlink data, described control signaling comprises the resource that described edge UE takies in respective cell, described resource comprises time resource, frequency resource.

Wherein, network terminal sends control signaling to UE, and indication sends to the shared resource of data of UE, and the modulation system of each data flow and code rate.

In embodiments of the present invention, UE carries out demodulation to the data that receive, and the data that receive is deciphered after receiving downlink data behind control signaling and the united beam form-endowing, thereby has finished the multi-point cooperative transmission to cell edge UE.

Below in conjunction with Figure of description the embodiment of the invention is described in further detail.

Embodiment 1, and in the present embodiment, the sub-district that sends downlink data to edge UE is called cooperation district.Referring to Fig. 2:

Step 201:UE measures the pilot signal strength of peripheral cell, and the sub-district ID that detects peripheral cell.Wherein, the pilot signal strength that also comprises Serving cell.Here can be to measure a period of time, the perhaps average strength of the pilot signal of the peripheral cell in the band frequency.

The pilot signal strength of the peripheral cell that step 202:UE measures step 201 by ascending control channel or Uplink Shared Channel, and the sub-district ID of peripheral cell reports to its Serving cell.Here, the pilot signal strength of sub-district ID and sub-district is one to one, has promptly also reported the pilot signal strength of this sub-district reporting cell ID the time, and vice versa.

Step 203: Serving cell determines that according to the information that step 202 reports this UE is center of housing estate UE or edge UE.If center of housing estate UE, then this method finishes, and does not promptly do special processing, according to the flow processing of single cell transmission.If cell edge UE, then execution in step 204.

Step 204: Serving cell is determined candidate's cooperative cell set of this UE according to the pilot signal strength of the peripheral cell of step 202 acquisition.Here, Serving cell can sort by size the pilot signal strength of the peripheral cell that obtains, the rank of selection some pilot signal strength corresponding district is the preceding formed candidate's cooperative cell set as candidate's cooperation district of this UE by these candidate's cooperation districts.Here, minimumly in candidate's cooperative cell set comprise two candidate's cooperation districts.

Step 205: Serving cell is notified the candidate cooperation district with the relevant information of this UE, and wherein, the relevant information of UE comprises the unique identification UEID of UE.

Step 206: the uplink channel information that obtains this UE in each candidate's cooperation district according to the uplink SRS of this UE transmission.

Here, in the TDD system, network terminal at first determines to send the time and the frequency of uplink SRS according to the running time-frequency resource operating position of candidate's cooperation district, then, edge cell UE is according to determining that good time and frequency send uplink SRS, like this, each candidate's cooperation district can estimate the uplink channel information of UE according to SRS, and then obtains direction and the CQI information of this UE.

Step 207: obtain CQI information in the channel information according to step 206, network terminal determines to send to this UE the cooperative cell set of data from candidate's cooperative cell set of this UE, and the resource that takies in each cooperation district of UE.Resource comprises time resource, frequency resource, here, is that example is described with the frequency resource.The CQI information of UE comprises the CQI of the UE on each frequency range of each sub-district in candidate's cooperative cell set, according to the CQI of the UE on each frequency range of each sub-district, determines the resource of frequency range and the corresponding cooperative cell set of this UE correspondence.In Fig. 3, in the present embodiment, UE is UE2, and step 203 determines that UE2 is cell edge UE, and UE2 is scheduled for frequency range 1, sub-district 1,2, and 3 send data to UE2 on frequency range 1, and promptly the cooperation district of UE2 comprises sub-district 1,2 and sub-district 3.Cooperative cell set comprises at least one cooperation district in the embodiment of the invention.

Step 208: according to the uplink channel information that estimates according to the SRS signal that step 206 obtains, each cooperation district of the UE that calculation procedure 207 is determined is to the wave beam forming weighing vector of the downlink data of this UE.Here, in the TDD system, at first, estimate the uplink channel information of each cooperation district according to the uplink SRS that UE sends to this UE, then, for the uplink channel information that estimates according to the SRS signal, utilize the reciprocity of TDD system channel can directly obtain its descending channel information, at last, described descending channel information is handled the weighing vector that can obtain wave beam forming.Here,, between cooperation district, unite and form the wave beam that points to a UE if share the channel information that estimates by SRS between cooperation district, thereby, can realize obtaining the relevant superposition of wave beam than forming the wave beam more performance separately.When not sharing the channel information that estimates by SRS between cooperation district, then can only realize the incoherent superposition of wave beam.

Step 209: according to the weighing vector of the wave beam forming of the downlink data of UE in 208 each cooperation district that obtains, the downlink data to this UE in each cooperation district of correspondence carries out wave beam forming.

Step 210: network terminal sends control signaling, and indication sends to the shared resource of the data of terminal UE, and the modulation system of each data flow and code rate.Simultaneously, each cooperation district is by the corresponding district antenna, and the downlink data that step 209 is carried out behind the wave beam forming sends to UE.In sending the occupied resource of downlink data, comprise the dedicated pilot that this terminal UE is used for demodulating data.Dedicated pilot adopts and the interior identical weighting figuration parameter of data that sends of resource of living in.The data that each cooperation district sends to same UE are identical before figuration with pilot tone.

Step 211:UE carries out demodulation to the data that receive, and the data that receive is deciphered according to the control signaling and the dedicated pilot that receive, thereby has finished the multi-point cooperative transmission to cell edge UE.

Implement 2, in the present embodiment, the sub-district that sends downlink data to edge UE is called cooperation district.Referring to Fig. 4:

Step 401:UE measures the pilot signal strength of peripheral cell, and the sub-district ID that detects peripheral cell.Wherein, the pilot signal strength that also comprises Serving cell.

Step 402:UE is by ascending control channel or Uplink Shared Channel, the pilot signal strength of the peripheral cell that step 401 is measured, and the sub-district ID of peripheral cell reports to its Serving cell.

Step 403: Serving cell determines that according to the information that step 402 reports this UE is center of housing estate UE or edge UE.If center of housing estate UE does not then do special processing, according to the flow processing of single cell transmission.If cell edge UE, then execution in step 404.

Step 404: the pilot signal strength of the peripheral cell that Serving cell obtains according to step 402, determine at least one cooperation district of this UE, and the resource that in respective cell, takies of this UE.

According to the information that step 402 reports, network terminal determines to send to this UE the cooperative cell set of data from the peripheral cell of this UE.The pilot signal strength of each candidate's cooperation district that can obtain according to this UE that reports determines to send to this UE at least one cooperation districts of data from the peripheral cell of this UE, and the resource that takies in corresponding each sub-district of this UE.

Step 405: the directional information that obtains this UE in each cooperation district.

Here, the Serving cell of UE calculates direction, the position of UE in each cooperation district, then the corresponding cooperation district of Serving cell notice according to the signal power of the peripheral cell of the UE feedback geographical location information in conjunction with peripheral cell.

Step 406: the directional information of the UE that obtains according to step 405, calculate the weighing vector of the wave beam forming of the downlink data of described UE in each cooperation district.

Step 407: according to the weighing vector of the wave beam forming of the downlink data of UE in 406 each cooperation district that obtains, the downlink data to this UE in each cooperation district of correspondence carries out wave beam forming.Here, the directional information of UE is only shared in the minizone, and the wave beam of each cooperation district can only be realized incoherent superposition.

Step 408: network terminal sends control signaling, and indication sends to the shared resource of data of UE, and the modulation system of each data flow and code rate.Simultaneously, each cooperation district is by the corresponding district antenna, and the data that step 407 is carried out behind the wave beam forming send to UE.In sending the occupied resource of data, comprise the dedicated pilot that this terminal UE is used for demodulating data.Dedicated pilot adopts and the interior identical weighting figuration parameter of data that sends of resource of living in.The data that each cooperation district sends to same UE are identical before figuration with pilot tone.

Step 409:UE carries out demodulation to the data that receive, and the data that receive is deciphered according to the control signaling and the dedicated pilot that receive, thereby has finished the multi-point cooperative transmission to cell edge UE.

Embodiment 3, and in the present embodiment, the sub-district that sends downlink data to edge UE is called cooperation district.Referring to Fig. 5:

Step 501:UE measures the pilot signal strength of peripheral cell, and the sub-district ID that detects peripheral cell.

The pilot signal strength of the peripheral cell that step 502:UE measures step 501 by ascending control channel or Uplink Shared Channel, and the sub-district ID of peripheral cell reports to its Serving cell.

Step 503: Serving cell determines that according to the information that step 502 reports this UE is center of housing estate UE or edge UE.If center of housing estate UE, then this method finishes, and does not promptly do special processing, according to the flow processing of single cell transmission.If cell edge UE, then execution in step 504.

Step 504: the pilot signal strength of the peripheral cell that Serving cell obtains according to step 502, determine at least one cooperation district of this UE, and the resource that in respective cell, takies of this UE.

Step 505: the directional information that obtains this UE in each cooperation district according to the uplink SRS of this UE transmission.

Here, network terminal at first determines to send the time and the frequency of uplink SRS according to the running time-frequency resource operating position of candidate's cooperation district, then, edge cell UE is according to determining that good time and frequency send uplink SRS, like this, each candidate's cooperation district can estimate the uplink channel information of UE according to SRS, and then obtains the directional information of this UE.

Step 506: the directional information of the UE that obtains according to step 505, calculate the weighing vector of the wave beam forming of the downlink data of described UE in each cooperation district.

Step 507: according to the weighing vector of the wave beam forming of the downlink data of UE in 506 each cooperation district that obtains, the downlink data to this UE in each cooperation district of correspondence carries out wave beam forming, and the wave beam of each cooperation district is realized incoherent superposition.

Step 508: network terminal sends control signaling to UE, and step 507 carries out the data behind the wave beam forming, and wherein, the control signaling comprises the resource that UE takies in respective cell.

Step 509:UE carries out demodulation to the data that receive, and the data that receive is deciphered according to the control signaling that receives, thereby has finished the multi-point cooperative transmission to cell edge UE.

Above-mentioned example 1, enforcement 2, embodiment 3 can both be applied in the TDD system, for Frequency Division Duplexing (FDD) (FDD, Frequency Division Duplex) system has only directional information, therefore can adopt enforcement 2 and embodiment 3 described methods that cell edge UE is carried out multi-point cooperative transmission.

Can make up a kind of device of multi-point cooperative transmission according to said method, referring to Fig. 6, comprise: determining unit 100, computing unit 200, wave beam forming unit 300 and transmitting element 400.

Determining unit 100 is used for the pilot signal strength of the peripheral cell that reports according to edge UE, determines to send to described edge UE at least one sub-district of downlink data, and the resource that takies in respective cell of described edge UE;

Computing unit 200 is used for uplink channel information or directional information according to described edge UE in each sub-district of determining, calculates the weighing vector of the wave beam forming of the downlink data of described UE in each sub-district;

Wave beam forming unit 300 is used in each sub-district the weighing vector according to the wave beam forming of correspondence, and the downlink data that described edge UE is sent carries out wave beam forming;

Transmitting element 400, be used for to described UE send control signaling and wave beam forming after downlink data, described control signaling comprises the resource that described edge UE takies in respective cell.

Further, the pilot signal strength of the peripheral cell that determining unit 100 can be at first reports according to edge UE, determine that described edge UE sends the candidate set of data, described candidate set comprises at least two candidate cells, the uplink pilot signal SRS that sends according to edge UE then, obtain the CQI information of edge UE described in each candidate cell, last CQI information according to edge UE described in described each candidate cell, from described candidate set, determine at least one sub-district of described edge UE, and the resource that in respective cell, takies of described edge UE.Here, the pilot signal strength of the peripheral cell that determining unit 100 also can be only reports according to UE is directly determined at least one sub-district of described edge UE transmission data, and the resource that takies in respective cell of described UE.

The uplink SRS that computing unit 200 at first sends according to edge UE is estimated the uplink channel information of described edge UE in each sub-district, obtain each sub-district of the uplink channel information correspondence of described edge UE in described each sub-district and the descending channel information of described edge UE then, according to the descending channel information of described edge UE in described each sub-district, calculate the shape weighing vector of the wave beam tax of the downlink data of described edge UE in each sub-district at last.Perhaps,

The signal power of the peripheral cell that computing unit 200 at first reports according to edge UE, and the geographical location information of described peripheral cell, obtain the directional information of each sub-district inward flange UE, according to the directional information of UE in described each sub-district, calculate the weighing vector of the wave beam forming of the downlink data of described UE in each sub-district then.Perhaps,

The uplink SRS that computing unit 200 at first sends according to edge UE, obtain the directional information of edge UE in each sub-district, according to the directional information of edge UE in described each sub-district, calculate the weighing vector of the wave beam forming of the downlink data of described UE in each sub-district then.

In sum, the embodiment of the invention is carried out the method for multi-point cooperative transmission to cell edge UE on the basis of existing LTE system.This method is simple, easy to implement, and a little information only need be shared in the minizone, and the operation of network terminal is transparent to UE, can not bring extra complexity to UE.The present invention is according to uplink channel information or the directional information of UE described in each cooperation district, calculate the weighing vector of the wave beam forming of the downlink data of described UE in each sub-district, in each sub-district according to the weighing vector of the wave beam forming of correspondence, the downlink data that described edge UE is sent carries out wave beam forming, to edge UE send control signaling and wave beam forming after downlink data, wherein control signaling comprises that described edge UE takies in respective cell resource, like this, edge UE is according to the control signaling that receives, the data that receive are carried out demodulation and decoding, thereby can improve the throughput of cell edge UE, further improve the average throughput of whole sub-district.

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

Claims (12)

1, a kind of method of multi-point cooperative transmission is characterized in that, comprising:
The pilot signal strength of the peripheral cell that reports according to edge termination UE determines to send to described edge UE at least one sub-district of downlink data, and the resource that takies in respective cell of described edge UE;
According to uplink channel information or the directional information of described edge UE in each sub-district of determining, calculate the weighing vector of the wave beam forming of the downlink data of described edge UE in each sub-district;
According to the weighing vector of the wave beam forming of correspondence, the downlink data that described edge UE is sent carries out wave beam forming in each sub-district;
To described edge UE send control signaling and wave beam forming after downlink data, described control signaling comprises the resource that described edge UE takies in respective cell.
2, the method for claim 1, it is characterized in that, the pilot signal strength of the described peripheral cell that reports according to edge UE determine to send to described edge UE at least one sub-districts of data, and the resource that described edge UE takies comprises in respective cell:
The pilot signal strength of the peripheral cell that reports according to edge UE determines to send to described edge UE the candidate set of data, and described candidate set comprises at least two candidate cells;
According to the uplink pilot signal SRS that described edge UE sends, obtain the channel quality indicator (CQI) information of edge UE described in each candidate cell;
According to the CQI information of edge UE described in described each candidate cell, from described candidate set, determine to send at least one sub-district of data to described edge UE, and the resource that in respective cell, takies of described edge UE.
3, the method for claim 1 is characterized in that, determines that the directional information of described edge UE in each sub-district comprises:
The signal power of the peripheral cell that reports according to edge UE, and the geographical location information of described peripheral cell obtain the directional information of described edge UE in each sub-district; Or,
According to the uplink SRS that edge UE sends, obtain the directional information of described edge UE in each sub-district.
4, the method for claim 1 is characterized in that, the uplink channel information of described edge UE in each sub-district that described basis is determined, and the weighing vector that calculates the wave beam forming of the downlink data of described edge UE in each sub-district comprises:
According to the uplink SRS that edge UE sends, estimate the uplink channel information of described edge UE in each sub-district;
Obtain the descending channel information of described edge UE in each sub-district of the uplink channel information correspondence of described edge UE in described each sub-district;
According to the descending channel information of described edge UE in described each sub-district, calculate the shape weighing vector of the wave beam tax of the downlink data of described edge UE in each sub-district.
5, the method for claim 1 is characterized in that, determines that described this method comprises before described edge UE sends at least one sub-district of data:
Edge UE measures the pilot signal strength of peripheral cell, and the sub-district ID that detects peripheral cell;
Described edge UE is with the pilot signal strength of the peripheral cell that measures, and the sub-district ID of peripheral cell reports Serving cell.
6, the method for claim 1 is characterized in that, to described edge UE send control signaling and wave beam forming after data after, this method comprises:
Edge UE carries out demodulation and decoding according to the control signaling that receives to the data that receive.
7, a kind of device of multi-point cooperative transmission is characterized in that, comprising:
Determining unit is used for the pilot signal strength of the peripheral cell that reports according to edge UEUE, determines to send to described edge UE at least one sub-district of downlink data, and the resource that takies in respective cell of described edge UE;
Computing unit is used for uplink channel information or directional information according to described edge UE in each sub-district of determining, calculates the weighing vector of the wave beam forming of the downlink data of described UE in each sub-district;
The wave beam forming unit is used in each sub-district the weighing vector according to the wave beam forming of correspondence, and the downlink data that described edge UE is sent carries out wave beam forming;
Transmitting element, be used for to described edge UE send control signaling and wave beam forming after downlink data, described control signaling comprises the resource that described edge UE takies in respective cell.
8, device as claimed in claim 7 is characterized in that, described determining unit comprises:
First determines subelement, is used for the pilot signal strength of the peripheral cell that reports according to edge UE, determines that described edge UE sends the candidate set of data, and described candidate set comprises at least two candidate cells;
Obtain subelement, be used for uplink pilot signal SRS, obtain the CQI information of edge UE described in each candidate cell according to edge UE transmission;
Second determines to be used for the CQI information according to edge UE described in described each candidate cell by subelement, determines at least one sub-district of described edge UE from described candidate set, and the resource that takies in respective cell of described edge UE.
9, device as claimed in claim 7 is characterized in that, described computing unit comprises:
The estimator unit is used for the uplink SRS according to edge UE transmission, estimates the uplink channel information of described edge UE in each sub-district;
First obtains subelement, is used for the descending channel information of described edge UE in each sub-district that root obtains the uplink channel information correspondence of described edge UE in described each sub-district;
First computation subunit is used for the descending channel information according to described edge UE in described each sub-district, calculates the shape weighing vector of the wave beam tax of the downlink data of described edge UE in each sub-district.
10, device as claimed in claim 7 is characterized in that, described computing unit comprises:
Second obtains subelement, is used to obtain the directional information of described edge UE in each sub-district;
Second computation subunit is used for the directional information according to described edge UE in described each sub-district, calculates the weighing vector of the wave beam forming of the downlink data of described edge UE in each sub-district.
11, device as claimed in claim 10 is characterized in that, described second obtains subelement comprises:
First obtains submodule, be used for the signal power of the peripheral cell that reports according to edge UE, and the geographical location information of described peripheral cell obtains the directional information of described edge UE in each sub-district.
12, device as claimed in claim 10 is characterized in that, described second obtains subelement comprises:
Second obtains submodule, is used for the uplink SRS according to edge UE transmission, obtains the directional information of described edge UE in each sub-district.
CN200810223357A 2008-09-26 2008-09-26 Method and device for multi-point synergetic transmission CN101686077B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200810223357A CN101686077B (en) 2008-09-26 2008-09-26 Method and device for multi-point synergetic transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200810223357A CN101686077B (en) 2008-09-26 2008-09-26 Method and device for multi-point synergetic transmission

Publications (2)

Publication Number Publication Date
CN101686077A true CN101686077A (en) 2010-03-31
CN101686077B CN101686077B (en) 2012-10-03

Family

ID=42049074

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200810223357A CN101686077B (en) 2008-09-26 2008-09-26 Method and device for multi-point synergetic transmission

Country Status (1)

Country Link
CN (1) CN101686077B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102149130A (en) * 2011-04-22 2011-08-10 电信科学技术研究院 Method, device and system for reporting channel quality indicator
CN102223171A (en) * 2011-06-17 2011-10-19 电信科学技术研究院 Method, system and device fo obtaining and feeding back channel information
CN105634658A (en) * 2014-10-31 2016-06-01 中国移动通信集团公司 Transmission processing method, equipment and system
CN109391405A (en) * 2017-08-10 2019-02-26 电信科学技术研究院 Restoration methods, device, terminal and the network equipment of wave beam failure
WO2019076370A1 (en) * 2017-10-19 2019-04-25 华为技术有限公司 Beamforming method and apparatus, and computer storage medium

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101047970A (en) * 2006-03-29 2007-10-03 北京三星通信技术研究有限公司 Channel quality report method and equipment for quick cell selection
CN101267654B (en) * 2007-03-16 2011-07-20 电信科学技术研究院 Dispatching method and user device for uplink channel detection pilot

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102149130A (en) * 2011-04-22 2011-08-10 电信科学技术研究院 Method, device and system for reporting channel quality indicator
WO2012142913A1 (en) * 2011-04-22 2012-10-26 电信科学技术研究院 Method, device, and system for reporting channel quality indicator
CN102149130B (en) * 2011-04-22 2014-01-01 电信科学技术研究院 Method, device and system for reporting channel quality indicator
US9252932B2 (en) 2011-04-22 2016-02-02 China Academy Of Telecommunications Technology Method, device, and system for reporting channel quality indicator
CN102223171A (en) * 2011-06-17 2011-10-19 电信科学技术研究院 Method, system and device fo obtaining and feeding back channel information
CN102223171B (en) * 2011-06-17 2014-01-01 电信科学技术研究院 Method, system and device fo obtaining and feeding back channel information
CN105634658A (en) * 2014-10-31 2016-06-01 中国移动通信集团公司 Transmission processing method, equipment and system
CN109391405A (en) * 2017-08-10 2019-02-26 电信科学技术研究院 Restoration methods, device, terminal and the network equipment of wave beam failure
WO2019076370A1 (en) * 2017-10-19 2019-04-25 华为技术有限公司 Beamforming method and apparatus, and computer storage medium

Also Published As

Publication number Publication date
CN101686077B (en) 2012-10-03

Similar Documents

Publication Publication Date Title
US10148335B2 (en) Method and apparatus for determining optimal beam in a multi-input multi-output system
US20190230672A1 (en) Wireless communication system using multiple transmission and reception points
EP3205040B1 (en) Method for dynamic csi feedback
JP2018101983A (en) Method and apparatus for measuring downlink interference in orthogonal frequency division multiple access mobile communication system
JP6410054B2 (en) Feedback method and apparatus in mobile communication system
US10524150B2 (en) Method and apparatus for generating cell measurement information in a wireless communication system
US9942699B2 (en) Methods and systems for user equipment positioning using intercell interference coordination
AU2013318753B2 (en) Method and apparatus for transmitting and receiving channel state information in a wireless communication system
AU2013320765B2 (en) Interference measurement method and apparatus for use in distributed antenna system
US10142053B2 (en) Method and apparatus for transmitting control information to remove and suppress interference in wireless communication system
KR101745402B1 (en) Method and apparatus for acquiring channel state information in antenna array
US10454555B2 (en) Channel state information feedback method and apparatus for 2-dimensional massive MIMO communication system
KR101567477B1 (en) Method and apparatus for reference signal processing in an orthogonal frequency division multiplexing communication system
EP2689627B1 (en) Performing coordinated multipoint transmission and reception (comp) in a wireless communication network
EP2664083B1 (en) Method and apparatus for multi-cell cooperative transmission
US9386599B2 (en) Radio communication system, radio base station apparatus and radio communication method
CN103918208B (en) For the CSI report of the set of CSI RS resources
EP3032863B1 (en) Wireless communication system, and method for determining antenna configuration
CN102149130B (en) Method, device and system for reporting channel quality indicator
CN103209415B (en) Full duplex disturbs treating method and apparatus
US9143951B2 (en) Method and system for coordinated multipoint (CoMP) communication between base-stations and mobile communication terminals
CN104662969B (en) System and method for configurating channel status information in a communications system
JP5743965B2 (en) User terminal, radio communication system, radio communication method, and radio base station
EP2701423B1 (en) Method and device for measuring interference in coordinated multipoint transmission
WO2016141782A1 (en) Hybrid beam-forming transmission method and network device

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
C41 Transfer of patent application or patent right or utility model
TA01 Transfer of patent application right

Effective date of registration: 20110422

Address after: 100191 Haidian District, Xueyuan Road, No. 40,

Applicant after: Inst of Telecommunication Science and Technolgoy

Address before: 100083 Haidian District, Xueyuan Road, No. 29,

Applicant before: Datang Mobile Communication Equipment Co., Ltd.

COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 100083 NO. 29, XUEYUAN ROAD, HAIDIAN DISTRICT, BEIJING TO: 100191 NO. 40, XUEYUAN ROAD, HAIDIAN DISTRICT, BEIJING

ASS Succession or assignment of patent right

Owner name: INST OF TELECOMMUNICATION SCIENCE AND TECHNOLGOY

Free format text: FORMER OWNER: DATANG MOBILE COMMUNICATION EQUIPMENT CO., LTD.

Effective date: 20110422

C14 Grant of patent or utility model
GR01 Patent grant