CN101686077B - Method and device for multi-point synergetic transmission - Google Patents

Method and device for multi-point synergetic transmission Download PDF

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Publication number
CN101686077B
CN101686077B CN200810223357A CN200810223357A CN101686077B CN 101686077 B CN101686077 B CN 101686077B CN 200810223357 A CN200810223357 A CN 200810223357A CN 200810223357 A CN200810223357 A CN 200810223357A CN 101686077 B CN101686077 B CN 101686077B
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edge ue
district
sub
ue
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CN101686077A (en
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缪德山
高秋彬
拉盖施
索士强
谢永斌
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电信科学技术研究院
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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 in a 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 the multi-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) feedack or the base station information self estimating out; 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, the multi-district pilots signal is sent in collaborative sub-district, 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 confirms to send to said edge UE at least one sub-district of downlink data, and the resource that in respective cell, takies of said edge UE;

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

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

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

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

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

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

Transmitting element, be used for to said edge UE send control signaling with wave beam forming after downlink data, said control signaling comprises the resource that said 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; Confirm to send at least one sub-district of downlink data to said edge UE, and the resource that in respective cell, takies of said edge UE, according to uplink channel information or the directional information of said edge UE in each sub-district of confirming; Calculate the weighing vector of the wave beam forming of the downlink data of said UE in each sub-district; According to the weighing vector of the wave beam forming of correspondence, the downlink data that said edge UE is sent carries out wave beam forming in each sub-district, to said edge UE send control signaling with wave beam forming after data; Said control signaling comprises the resource that said edge UE takies in respective cell; Thereby in the process of multi-point cooperative transmission, UE only need feed back a spot of information, downlink data is carried out wave beam forming after; 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 sketch map 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, confirm at least one sub-district of said edge UE, and the resource that in respective cell, takies of said edge UE, said 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 is confirmed the candidate set of said edge UE, the uplink pilot signal (SRS that sends according to edge UE then; Sounding Reference Signal); Obtain channel quality indication (CQI, Channel Quality Indicator) information of UE described in each candidate cell, last CQI information according to UE described in said each candidate cell; From said candidate set, confirm to send the sub-district of data to said edge UE, and the resource that in respective cell, takies of said 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 confirmed at least one sub-district of said edge UE, and the resource that in respective cell, takies of said edge UE.

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

The uplink SRS of at first sending according to UE is estimated the uplink channel information of each sub-district to said UE; Then according to the reciprocity of TDD system channel; Obtain said each sub-district to the descending channel information of corresponding each sub-district of the uplink channel information of said UE, calculate the weighing vector of each corresponding sub-district the wave beam forming of said UE to said UE.Perhaps,

The signal power of the peripheral cell that at first reports according to UE; And the geographical location information of said 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 said UE then according to the directional information of UE in said each sub-district.Here, directional information is to be calculated by the Serving cell of said 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 said UE then according to the directional information of UE in said 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 with wave beam forming after downlink data, said control signaling comprises the resource that said edge UE takies in respective cell, said 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, thereby accomplished the multi-point cooperative transmission to cell edge UE after receiving the downlink data behind control signaling and the united beam form-endowing.

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 of sending 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 through 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 confirms 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 confirmed 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 selecting some is formed candidate's cooperative cell set at candidate's cooperation district of preceding pilot signal strength corresponding district as 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 confirms 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 confirming good time and frequency transmission 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 the CQI information in the channel information according to step 206, network terminal confirms to send to this UE the cooperative cell set of data from candidate's cooperative cell set of this UE, and the resource that in each cooperation district, takies 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, confirms the resource of frequency range and corresponding cooperative cell set that this UE is corresponding.In Fig. 3, in the present embodiment, UE is UE2, and step 203 confirms 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 confirmed is to the wave beam forming weighing vector of the downlink data of this UE.Here, in the TDD system, at first; Uplink SRS according to UE sends is estimated the uplink channel information of each cooperation district 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, said 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 each cooperation district of 208 acquisitions, 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 through 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 of sending 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, thereby accomplished the multi-point cooperative transmission to cell edge UE according to the control signaling and the dedicated pilot that receive.

Implement 2, in the present embodiment, the sub-district of sending 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 through 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 confirms 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, confirm 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 confirms 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 confirms to send to this UE at least one cooperation districts of data from the peripheral cell of this UE, and the resource that in corresponding each sub-district, takies 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 geographical location information of the signal power combination peripheral cell of the peripheral cell of UE feedback.

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 said UE in each cooperation district.

Step 407: according to the weighing vector of the wave beam forming of the downlink data of UE in each cooperation district of 406 acquisitions, 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 through 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 of sending 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, thereby accomplished the multi-point cooperative transmission to cell edge UE according to the control signaling and the dedicated pilot that receive.

Embodiment 3, and in the present embodiment, the sub-district of sending 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 through ascending control channel or Uplink Shared Channel, and the sub-district ID of peripheral cell reports to its Serving cell.

Step 503: Serving cell confirms 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, confirm 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 confirms 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 confirming good time and frequency transmission 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 said UE in each cooperation district.

Step 507: according to the weighing vector of the wave beam forming of the downlink data of UE in each cooperation district of 506 acquisitions, 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, thereby accomplished the multi-point cooperative transmission to cell edge UE according to the control signaling that receives.

Above-mentioned instance 1, implement 2, embodiment 3 can both be applied in the TDD system; For 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: confirm unit 100, computing unit 200, wave beam forming unit 300 and transmitting element 400.

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

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

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

Further; Confirm the pilot signal strength of the peripheral cell that unit 100 can be at first reports according to edge UE; Confirm that said edge UE sends the candidate set of data, said 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; At last, from said candidate set, confirm at least one sub-district of said edge UE according to the CQI information of edge UE described in said each candidate cell, and the resource that in respective cell, takies of said edge UE.Here, confirm the pilot signal strength of the peripheral cell that unit 100 also can be only reports according to UE, directly confirm at least one sub-district of said edge UE transmission data, and the resource that in respective cell, takies of said UE.

The uplink SRS that computing unit 200 at first sends according to edge UE is estimated the uplink channel information of said edge UE in each sub-district; Obtain each corresponding sub-district of the uplink channel information of said edge UE in said each sub-district and the descending channel information of said edge UE then; According to the descending channel information of said edge UE in said each sub-district, calculate the shape weighing vector of the wave beam tax of the downlink data of said 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 said peripheral cell; Obtain the directional information of each sub-district inward flange UE; According to the directional information of UE in said each sub-district, calculate the weighing vector of the wave beam forming of the downlink data of said 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 said each sub-district, calculate the weighing vector of the wave beam forming of the downlink data of said 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 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 said UE in each sub-district; According to the weighing vector of the wave beam forming of correspondence, the downlink data that said edge UE is sent carries out wave beam forming in each sub-district, to edge UE send control signaling with wave beam forming after downlink data; Wherein control signaling comprises that said edge UE takies in respective cell resource; Like this, edge UE carries out demodulation and decoding according to the control signaling that receives to the data that receive; 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, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.

Claims (12)

1. the method for a multi-point cooperative transmission is characterized in that, comprising:
The pilot signal strength of the peripheral cell that reports according to edge termination UE confirms to send to said edge UE at least one sub-district of downlink data, and the resource that in respective cell, takies of said edge UE;
According to uplink channel information or the directional information of said edge UE in each sub-district of confirming, calculate the weighing vector of the wave beam forming of the downlink data of said edge UE in each sub-district;
According to the weighing vector of the wave beam forming of correspondence, the downlink data that said edge UE is sent carries out wave beam forming in each sub-district;
To said edge UE send control signaling with wave beam forming after downlink data, said control signaling comprises the resource that said edge UE takies in respective cell.
2. the method for claim 1 is characterized in that, the pilot signal strength of the said peripheral cell that reports according to edge UE confirm to send to said edge UE at least one sub-districts of data, and the resource that said edge UE takies comprises in respective cell:
The pilot signal strength of the peripheral cell that reports according to edge UE confirms to send to said edge UE the candidate set of data, and said candidate set comprises at least two candidate cells;
According to the uplink pilot signal SRS that said 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 said each candidate cell, from said candidate set, confirm to send at least one sub-district of data to said edge UE, and the resource that in respective cell, takies of said edge UE.
3. the method for claim 1 is characterized in that, confirms that the directional information of said 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 said peripheral cell obtain the directional information of said edge UE in each sub-district; Or,
According to the uplink SRS that edge UE sends, obtain the directional information of said edge UE in each sub-district.
4. the method for claim 1 is characterized in that, the uplink channel information of said edge UE in each sub-district that said basis is confirmed, and the weighing vector that calculates the wave beam forming of the downlink data of said edge UE in each sub-district comprises:
According to the uplink SRS that edge UE sends, estimate the uplink channel information of said edge UE in each sub-district;
Obtain the descending channel information of said edge UE in each corresponding sub-district of the uplink channel information of said edge UE in said each sub-district;
According to the descending channel information of said edge UE in said each sub-district, calculate the weighing vector of the wave beam forming of the downlink data of said edge UE in each sub-district.
5. the method for claim 1 is characterized in that, confirms that said this method comprises before said 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;
Said 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 said edge UE send control signaling with 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. the device of a multi-point cooperative transmission is characterized in that, comprising:
Confirm the unit, the pilot signal strength of the peripheral cell that is used for reporting according to edge UE confirms to send to said edge UE at least one sub-district of downlink data, and the resource that in respective cell, takies of said edge UE;
Computing unit is used for uplink channel information or directional information according to said edge UE in each sub-district of confirming, calculates the weighing vector of the wave beam forming of the downlink data of said 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 said edge UE is sent carries out wave beam forming;
Transmitting element, be used for to said edge UE send control signaling with wave beam forming after downlink data, said control signaling comprises the resource that said edge UE takies in respective cell.
8. device as claimed in claim 7 is characterized in that, said definite unit comprises:
First confirms subelement, and the pilot signal strength of the peripheral cell that is used for reporting according to edge UE confirms that said edge UE sends the candidate set of data, and said 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 confirms to be used for the CQI information according to edge UE described in said each candidate cell by subelement, from said candidate set, confirms at least one sub-district of said edge UE, and the resource that in respective cell, takies of said edge UE.
9. device as claimed in claim 7 is characterized in that, said computing unit comprises:
The estimator unit is used for the uplink SRS according to edge UE transmission, estimates the uplink channel information of said edge UE in each sub-district;
First obtains subelement, is used to obtain the descending channel information of said edge UE in each corresponding sub-district of the uplink channel information of said edge UE in said each sub-district;
First computation subunit is used for the descending channel information according to said edge UE in said each sub-district, calculates the weighing vector of the wave beam forming of the downlink data of said edge UE in each sub-district.
10. device as claimed in claim 7 is characterized in that, said computing unit comprises:
Second obtains subelement, is used to obtain the directional information of said edge UE in each sub-district;
Second computation subunit is used for the directional information according to said edge UE in said each sub-district, calculates the weighing vector of the wave beam forming of the downlink data of said edge UE in each sub-district.
11. device as claimed in claim 10 is characterized in that, said second obtains subelement comprises:
First obtains submodule, the signal power of the peripheral cell that is used for reporting according to edge UE, and the geographical location information of said peripheral cell obtains the directional information of said edge UE in each sub-district.
12. device as claimed in claim 10 is characterized in that, said second obtains subelement comprises: second obtains submodule, is used for the uplink SRS according to edge UE transmission, obtains the directional information of said edge UE in each sub-district.
CN200810223357A 2008-09-26 2008-09-26 Method and device for multi-point synergetic transmission CN101686077B (en)

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Publication number Priority date Publication date Assignee Title
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
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
CN107947842A (en) * 2017-10-19 2018-04-20 成都华为技术有限公司 Beam form-endowing method, device and computer-readable storage medium

Citations (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
CN101267654A (en) * 2007-03-16 2008-09-17 大唐移动通信设备有限公司 Dispatching method and user device for uplink channel detection pilot

Patent Citations (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
CN101267654A (en) * 2007-03-16 2008-09-17 大唐移动通信设备有限公司 Dispatching method and user device for uplink channel detection pilot

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