CN101754361A - Method, system and device for multi-cell joint transmission - Google Patents
Method, system and device for multi-cell joint transmission Download PDFInfo
- Publication number
- CN101754361A CN101754361A CN200810239044A CN200810239044A CN101754361A CN 101754361 A CN101754361 A CN 101754361A CN 200810239044 A CN200810239044 A CN 200810239044A CN 200810239044 A CN200810239044 A CN 200810239044A CN 101754361 A CN101754361 A CN 101754361A
- Authority
- CN
- China
- Prior art keywords
- terminal
- candidate
- cooperation district
- described terminal
- network equipment
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000002093 peripheral effect Effects 0.000 claims description 54
- 238000005303 weighing Methods 0.000 claims description 24
- 230000011664 signaling Effects 0.000 claims description 18
- 238000005259 measurement Methods 0.000 claims description 2
- 230000001427 coherent effect Effects 0.000 abstract description 10
- 238000012545 processing Methods 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a method for multi-cell joint transmission, which comprises that: equipment on a network side judges that whether a terminal is a coordinated terminal; after the equipment on the network side judges that the terminal is a coordinated terminal, a candidate coordinated cell cluster of the terminal is determined, and cells in the candidate coordinated cell cluster are informed of the terminal information of the terminal; and the equipment on the network side acquires direction information of the terminal in each candidate coordinated cell in the candidate coordinated cell cluster, and selects a coordinated cells to send data for the terminal from the candidate coordinated cell cluster and a corresponding frequency range according to the acquired direction information, wherein at least one of the coordinated cells adopts a frequency range different from that of other coordinated cells. The method can realize coherent addition of wave beams of multiple coordinated cells through merged processing of the terminal, so that the problem that the base station needs continuously performing phase adjustment according to the movement of the terminal in the prior art is solved.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of method, system and device of multi-plot joint transmission.
Background technology
In order to improve cell edge throughput and sub-district average throughput, a kind of multi-point cooperative transmission technology has been proposed at present.LTE system (Long Term Evolution, Long Term Evolution) supports descending wave beam forming transmission.So-called wave beam forming, the channel information that channel information that to be the base station feed back up according to terminal or base station estimate, on each physical antenna of making a start, introduce different weighted values, the signal that is transmitted into each user can be concentrated in the narrower beam area.Can strengthen user's received signal to noise ratio so on the one hand, on the other hand since the concentration of energy of emission within a narrower orientation angle, therefore the interference to other users outside this direction also can reduce.
Multi-point cooperative transmission method is at present: each sub-district generates a wave beam that points to certain terminal respectively on identical frequency band, signal superposes in end, thereby reaches the purpose that signal strengthens.But the influence that the propagation delay that is subjected to signal is different, each wave beam are in the non-coherent addition that is superposed to of end, and the obtainable gain of institute is limited.Therefore in order to realize coherent superposition, in FDD (Frequency DivisionDuplex, Frequency Division Duplexing (FDD)) system, terminal can be fed back a phase factor and adjust the coherent superposition that phase place realizes end to help the base station; And, then can obtain phase adjustment by the mode of measuring upward signal for TDD (Time Division Duplex, time division duplex) system.
The shortcoming that prior art exists is, above-mentioned to adjust the wave beam coherent superposition that the method for phase place realizes by the base station very responsive to the displacement of terminal.As long as terminal is mobile a little, the base station just needs to upgrade respective phase, and the speed of base station end renewal is difficult to catch up with the translational speed of terminal like this, thereby has limited the multi-point cooperative transmission The Application of Technology.
Summary of the invention
Purpose of the present invention is intended to solve at least one of above-mentioned technological deficiency, solves in the prior art restriction of the multi-point cooperative transmission technology being used because phase place need be brought in constant renewal in the base station especially.
For achieving the above object, one aspect of the present invention proposes a kind of method that strengthens the multi-cooperation district signal, may further comprise the steps: network equipment judges whether terminal is collaborative terminal; After described network equipment judged that described terminal is for collaborative terminal, described network equipment was determined candidate's cooperative cell set of described terminal, and notified candidate's cooperation district in described candidate's cooperative cell set with the end message of described terminal; Described network equipment obtains described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set, and from described candidate's cooperative cell set, be chosen as cooperation district and the corresponding frequency range that described terminal sends data according to the described directional information of obtaining, wherein have at least the frequency range that cooperation district adopted different with other cooperation district, described each cooperation district of selection sends data to described terminal on each self-corresponding frequency range.
As one embodiment of the present of invention, described network equipment judges whether terminal is that collaborative terminal comprises: described network equipment receives the peripheral cell ID of described terminal to report and the pilot signal strength of the peripheral cell that described terminal is measured; Described network equipment judges according to the pilot signal strength of the peripheral cell of described peripheral cell ID and the measurement of described terminal whether terminal is collaborative terminal.
As one embodiment of the present of invention, described network equipment determines that candidate's cooperative cell set of described terminal comprises: whether the pilot signal strength of judging described peripheral cell is greater than threshold value; If the pilot signal strength of peripheral cell, is then selected the candidate cooperation district of described peripheral cell as described terminal greater than threshold value.
As one embodiment of the present of invention, described network equipment obtains described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set and comprises: described each candidate's cooperation district receives the uplink pilot signal that described terminal sends, and obtain described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set, and report described network equipment according to described uplink pilot signal.
As one embodiment of the present of invention, described network equipment obtains described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set and comprises: described network equipment calculates described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set according to the signal power of the peripheral cell of described terminal feedback in conjunction with the geographical location information of peripheral cell, notifies each candidate's cooperation district with the directional information of described terminal in each candidate's cooperation district simultaneously.
As one embodiment of the present of invention, obtain described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set at described network equipment, and from described candidate's cooperative cell set, be chosen as after the cooperation district and corresponding frequency range that described terminal sends data according to the described directional information of obtaining, also comprise: described network equipment calculates the wave beam forming weighing vector of described each cooperation district to described terminal according to the directional information of described terminal or by the uplink channel information that described uplink pilot signal estimates, perhaps, described terminal calculates the wave beam forming weighing vector of described each cooperation district to described terminal, feeds back to network equipment by up channel again.
As one embodiment of the present of invention, obtain described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set at described network equipment, and from described candidate's cooperative cell set, be chosen as after the cooperation district and corresponding frequency range that described terminal sends data according to the described directional information of obtaining, also comprise: described network equipment is sent to the shared time-frequency domain resources of data of described terminal to the indication that sends control signaling of described terminal.
As one embodiment of the present of invention, also comprise: in the time of carrying the data that are sent to described terminal, include the dedicated pilot that described terminal is used for demodulating data.
As one embodiment of the present of invention, also comprise: the figuration weighing vector of described dedicated pilot is identical with the figuration weighing vector of data in the described time.
As one embodiment of the present of invention, also comprise: described terminal receives data according to described control signaling and described dedicated pilot.
As one embodiment of the present of invention, after described terminal is according to described control signaling and described dedicated pilot reception data, also comprise: described terminal receives the data of described corresponding cooperation district transmission and the data that receive is merged on different frequency range, carry out demodulation afterwards; Perhaps, described terminal will receive the data of described corresponding cooperation district transmission earlier and carry out demodulation on different frequency range, merge again.
As one embodiment of the present of invention, obtain described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set at described network equipment, and from described candidate's cooperative cell set, be chosen as cooperation district and the corresponding frequency range that described terminal sends data according to the described directional information of obtaining, wherein have at least the frequency range that cooperation district adopted different with other cooperation district after, also comprise: described network equipment control cooperation district with other cooperation districts be the frequency allocation of described terminal distribution give with described terminal angle intervals greater than the terminal of certain value or the terminal of center of housing estate, perhaps do not send out data any, and should control during the transmission data with described terminal angle intervals greater than the interference of the terminal of the terminal of certain value or center of housing estate to described terminal.
In the above-described embodiments, described network equipment is the home base station of described terminal, or the base station of cooperation district, or the MME (Mobility Management Entity, mobile management entity) under the described base station.
The present invention also proposes a kind of system that strengthens the multi-cooperation district signal, comprise network equipment and terminal, described network equipment, be used to judge whether terminal is collaborative terminal, judging candidate's cooperative cell set of determining described terminal after described terminal is for collaborative terminal, and notify candidate's cooperation district in described candidate's cooperative cell set with the end message of described terminal, and obtain described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set, and from described candidate's cooperative cell set, be chosen as cooperation district and the corresponding frequency range that described terminal sends data according to the described directional information of obtaining, wherein have at least the frequency range that cooperation district adopted different with other cooperation district, described each cooperation district of selection sends data to described terminal on each self-corresponding frequency range; Described terminal is used on different frequency range receiving data that described corresponding cooperation district sends and the data that receive is merged.
As one embodiment of the present of invention, described network equipment is the home base station of described terminal, or the base station of cooperation district, or the mobile management entity MME under the described base station.
The present invention also proposes a kind of network equipment, comprises judge module, cooperation district determination module, directional information acquisition module and select module that described judge module is used to judge whether terminal is collaborative terminal; Described cooperation district determination module is used for judging candidate's cooperative cell set of determining described terminal after described terminal is for collaborative terminal at described judge module, and notifies candidate's cooperation district in described candidate's cooperative cell set with the end message of described terminal; Described directional information acquisition module is used for obtaining the directional information of described terminal in each candidate's cooperation district of candidate's cooperative cell set; Described selection module, the described directional information that is used for obtaining according to described directional information acquisition module is chosen as cooperation district and the corresponding frequency range that described terminal sends data from described candidate's cooperative cell set, wherein have at least the frequency range that cooperation district adopted different with other cooperation district, described each cooperation district of selection sends data to described terminal on each self-corresponding frequency range.
As one embodiment of the present of invention, also comprise receiver module, be used to receive the peripheral cell ID of described terminal to report and the pilot signal strength of the peripheral cell that described terminal is measured, and the pilot signal strength of the peripheral cell that detected peripheral cell ID and described terminal are measured offers described judge module, and the pilot signal strength of the peripheral cell of being measured according to described peripheral cell ID and described terminal by described judge module judges whether terminal is to work in coordination with terminal.
As one embodiment of the present of invention, described cooperation district determination module is selected candidate's cooperation district of described terminal according to the pilot signal strength of described peripheral cell.
As one embodiment of the present of invention, described directional information acquisition module comprises the reception submodule, be used to receive the directional information of described terminal in described each candidate's cooperation district that described each candidate's cooperation district reports, described candidate's cooperation district obtains the directional information of described terminal in described each candidate's cooperation district according to the uplink pilot signal that described terminal sends.
As one embodiment of the present of invention, described directional information acquisition module comprises that feedback receives submodule, calculating sub module and notice submodule, and described feedback receives submodule, is used to receive the signal power of the peripheral cell of described terminal feedback; Described calculating sub module, the signal power that is used for receiving the peripheral cell that submodule receives according to described feedback is calculated the directional information of described terminal in each candidate's cooperation district of candidate's cooperative cell set in conjunction with the geographical location information of peripheral cell; Described notice submodule is used for notifying each candidate's cooperation district with the directional information of described terminal in each candidate's cooperation district that described calculating sub module is calculated.
As one embodiment of the present of invention, also comprise wave beam forming weighing vector computing module, be used for calculating the wave beam forming weighing vector of described each cooperation district described terminal according to the directional information of described terminal or by the uplink channel information that described uplink pilot signal estimates.
As one embodiment of the present of invention, also comprise the control signaling sending module, be used for being sent to shared time-frequency domain resources of the data of described terminal and corresponding wave beam forming weighing vector to the indication that sends control signaling of described terminal.
As one embodiment of the present of invention, carry in the time of the data that are sent to described terminal and include the dedicated pilot that described terminal is used for demodulating data.
As one embodiment of the present of invention, the figuration weighing vector of described dedicated pilot is identical with the figuration weighing vector of data in the described time.
In the above-described embodiments, described network equipment is the home base station of described terminal, or the base station of cooperation district, or the MME under the described base station.
The present invention also proposes a kind of terminal, comprises receiver module and demodulation module, and described receiver module is used for receiving the data that described corresponding cooperation district sends on different frequency range; Described demodulation module, the data that are used for described receiver module is received merge.
As one embodiment of the present of invention, described receiver module receives data according to described control signaling and described dedicated pilot.
The present invention is on the basis of existing LTE system, a kind of mthods, systems and devices of new enhancing multi-cooperation district signal have been proposed, on different frequency ranges, send data by network side of the present invention to described terminal, make the present invention to handle the coherent superposition that realizes the multi-cooperation district wave beam by the merging of terminal, thereby need not needs the base station constantly to carry out the phase place adjustment according to moving of terminal as prior art, so the present invention is lower to the displacement susceptibility of terminal.
Aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is the flow chart of the method for one embodiment of the invention multi-plot joint transmission;
Fig. 2 is the schematic diagram of terminal distribution frequency range for the embodiment of the invention;
Fig. 3 is the structure chart of embodiment of the invention multi-plot joint system for transmitting.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Below by the embodiment that is described with reference to the drawings is exemplary, only is used to explain the present invention, and can not be interpreted as limitation of the present invention.
The present invention mainly is, on the basis of existing LTE system, regulation and control by network side make that at least one cooperation district in each cooperation district is that the UE frequency range of distributing is different with other cooperation district, so just make the present invention to handle the coherent superposition that realizes the multi-cooperation district wave beam by the merging of terminal, thereby need not needs the base station constantly to carry out the phase place adjustment according to moving of terminal as prior art, so the present invention is lower to the displacement susceptibility of terminal.
As shown in Figure 1, be the flow chart of the method for one embodiment of the invention multi-plot joint transmission, the MME under home base station that described in this embodiment network equipment can be a terminal or the home base station.This embodiment may further comprise the steps:
Step S101, network equipment determine whether terminal is collaborative terminal.Whether the present invention proposes a kind of definite terminal as one embodiment of the present of invention is the method for collaborative terminal, particularly, terminal is measured the pilot signal strength of peripheral cell (comprising home cell), and the sub-district ID that detects peripheral cell, report to network equipment by ascending control channel or Uplink Shared Channel.Network equipment determines that according to the above-mentioned information of terminal to report whether this terminal is collaborative terminal, more specifically, for example can be defined as the terminal of cell edge collaborative terminal.If it is not collaborative terminal that network equipment is judged this terminal, then can not do special processing, handle according to the flow process of single cell transmission, do not repeat them here.
Step S102, if network equipment is judged described terminal and is collaborative terminal, then network equipment is determined candidate's cooperative cell set of described terminal according to the signal strength signal intensity of terminal surrounding sub-district, and notifies the candidate's cooperation district in candidate's cooperative cell set with the end message of terminal (as the id information of terminal etc.).As one embodiment of the present of invention, network equipment can be determined candidate's cooperative cell set of described terminal according to predetermined threshold value, if the pilot signal strength of certain peripheral cell of terminal to report greater than predetermined threshold value, then can select this peripheral cell as the candidate's cooperation district in candidate's cooperative cell set.Certainly the foregoing description only is to realize a kind of means of the present invention, and those skilled in the art also can determine candidate's cooperative cell set of terminal according to other modes, and other modes also should be included within protection scope of the present invention.
Step S103, network equipment obtain terminal directional information in each candidate's cooperation district in candidate's cooperative cell set.As embodiments of the invention; the present invention proposes the mode that two kinds of network equipments obtain terminal directional information in each candidate's cooperation district in candidate's cooperative cell set; but also need to prove; following dual mode is the more excellent implementation of the present invention; can determine that also other mode also should be included within protection scope of the present invention equally according to other modes.
Mode one,
Terminal sends uplink pilot signal according to being configured on official hour and the frequency of network side, can be called SRS (Sounding Reference Signal), wherein, the time and the frequency location that send uplink SRS are determined by the running time-frequency resource operating position of candidate's cooperation district, each candidate's cooperation district just can be estimated the directional information of terminal in each candidate's cooperation district according to uplink pilot signal like this, reports network equipment simultaneously.
Mode two,
Network equipment is notified each candidate's cooperation district with the directional information of terminal in each candidate's cooperation district simultaneously according to the signal power of the peripheral cell of terminal feedback geographical location information computing terminal direction and the positional information in each candidate's cooperation district in candidate's cooperative cell set in conjunction with peripheral cell.
Step S104, network equipment is chosen as cooperation district and the corresponding frequency range that terminal sends data according to the directional information of obtaining from candidate's cooperative cell set, wherein have at least the frequency range that cooperation district adopted different with other cooperation district.As another embodiment of the present invention, different cooperation districts are that the frequency range of a terminal distribution also can be identical.As the preferred embodiments of the present invention, in order to reduce interference to other-end, when sending the frequency range of data for terminal distribution, also need to consider influence to other-end in the cooperation district, promptly for a cooperation district, the frequency range that other cooperation districts should be distributed to terminal in this cooperation district, distribute to this terminal angle intervals greater than the terminal of certain value or the terminal of center of housing estate, perhaps do not send out data any, and should control during the transmission data with described terminal angle intervals greater than the interference of the terminal of the terminal of certain value or center of housing estate to described terminal.In order clearer understanding to be arranged to this embodiment, below with reference to accompanying drawing this embodiment is introduced, as shown in Figure 2, for the embodiment of the invention is the schematic diagram of terminal distribution frequency range, for example, the cooperation district of terminal 2 comprises cooperation district 1,2 and sub-district 3, wherein system cell 1 and cooperation district 2 send data to terminal 2 on frequency range 2, and 3 of cooperation districts send data to terminal 2 on frequency range 3.Terminal 2 takies two different frequency ranges of 3 cooperation districts altogether, and cooperation district 1 is distributed to the terminal 1 bigger with terminal 2 angle intervals with frequency range 3.Above embodiment only is for clearer description the present invention, and those skilled in the art also can or change realization by other means that are equal to, and these variations also should be included within protection scope of the present invention equally.
Step S108, terminal receives and demodulating data according to control signaling and dedicated pilot, and demodulated data is deciphered.Terminal receives the data of corresponding cooperation district transmission and the data that receive is merged on different frequency range.Particularly, merge between the reception data of a plurality of frequency ranges that terminal takies, merge the coherent superposition that realizes signal, decode again after merging by receiving.Certainly also can decode earlier and obtain merging again after the data.As one embodiment of the present of invention, network equipment then needs to send control signaling, and merges between which frequency range that indicating terminal takies.
As shown in Figure 3, be the structure chart of embodiment of the invention multi-plot joint system for transmitting, this system comprises network equipment 100 and terminal 200.Network equipment 100 is used to judge whether terminal 200 is collaborative terminal, judging candidate's cooperative cell set of determining terminal 200 after terminal 200 is for collaborative terminal, and notify the candidate in candidate's cooperative cell set cooperation district with the end message of terminal 200, and obtain terminal 200 directional information in each candidate's cooperation district in candidate's cooperative cell set, and from candidate's cooperative cell set, be chosen as cooperation district and the corresponding frequency range that terminal 200 sends data according to the directional information of obtaining, wherein have at least the frequency range that cooperation district adopted different with other cooperation district, described each cooperation district of selection sends data to described terminal on each self-corresponding frequency range.Terminal 200 is used for receiving the data of corresponding cooperation district transmission and the data that receive is merged on different frequency range.
As one embodiment of the present of invention, network equipment 100 can be the home base station of terminal 200 or the network entities such as MME under this home base station.
Wherein, above-mentioned network equipment 100 comprises judge module 110, cooperation district determination module 120, directional information acquisition module 130 and selects module 140.Judge module 110 is used to judge whether terminal 200 is collaborative terminal.Cooperation district determination module 120 is used for judging that at judge module 110 terminal 200 is to determine candidate's cooperative cell set of terminal 200 when working in coordination with terminal, and notifies the candidate in candidate's cooperative cell set cooperation district with the end message of terminal 200.Directional information acquisition module 130 is used for obtaining the directional information of terminal 200 in each candidate's cooperation district of candidate's cooperative cell set.The directional information of selecting module 140 to be used for obtaining according to directional information acquisition module 130 is chosen as cooperation district and the corresponding frequency range that terminal 200 sends data from candidate's cooperative cell set, wherein have at least the frequency range that cooperation district adopted different with other cooperation district, described each cooperation district of selection sends data to described terminal on each self-corresponding frequency range.
As one embodiment of the present of invention, network equipment 100 also comprises receiver module 150, the pilot signal strength that is used for the peripheral cell that peripheral cell ID that receiving terminal 200 reports and terminal 200 measure, and the pilot signal strength of the peripheral cell that detected peripheral cell ID and terminal 200 measured offers judge module 110, and the pilot signal strength of the peripheral cell of being measured according to peripheral cell ID and terminal 200 by judge module 110 judges whether terminal 200 is to work in coordination with terminal.
As one embodiment of the present of invention, cooperation district determination module 120 is selected candidate's cooperation district of terminal 200 according to the pilot signal strength of peripheral cell.
As one embodiment of the present of invention, directional information acquisition module 130 comprises reception submodule 131, be used to receive the directional information of terminal 200 in each candidate's cooperation district that each candidate's cooperation district reports, candidate's cooperation district obtains the directional information of terminal 200 in each candidate's cooperation district according to the uplink pilot signal that terminal 200 sends.
As an alternative embodiment of the invention, directional information acquisition module 130 comprises that feedback receives submodule 132, calculating sub module 133 and notice submodule 134.Feedback receives the signal power that submodule 132 is used for the peripheral cell of receiving terminal 200 feedbacks.Calculating sub module 133 is used for according to geographical location information computing terminal 200 the directional information candidate cooperative cell set each candidate cooperation district in of the signal power of feeding back the peripheral cell that receives submodule 132 receptions in conjunction with peripheral cell.Notice submodule 134 be used for terminal 200 that calculating sub module 133 is calculated in each candidate's cooperation district directional information and notify each candidate's cooperation district.
As one embodiment of the present of invention, network equipment 100 also comprises wave beam forming weighing vector computing module 160, is used for calculating the wave beam forming weighing vector of each cooperation district to terminal 200 according to the directional information of terminal 200 or by the uplink channel information that uplink pilot signal estimates.
As one embodiment of the present of invention, network equipment 100 also comprises control signaling sending module 170, is used for being sent to the shared time-frequency domain resources of data of terminal 200 to the terminal indication that sends control signaling.Wherein, carry in the time of the data that are sent to terminal 200 and include the dedicated pilot that terminal 200 is used for demodulating data.Particularly, the figuration weighing vector of above-mentioned dedicated pilot is identical with the figuration weighing vector of data in the time.
Wherein, terminal 200 comprises receiver module 210 and demodulation module 220.Receiver module 210 is used for receiving the data that corresponding cooperation district sends on different frequency range.The data that demodulation module 220 is used for receiver module 210 is received merge.Particularly, receiver module 210 receives data according to control signaling and dedicated pilot.More specifically, terminal is carried out demodulation after can earlier the data that receive being merged, and perhaps also can earlier the data that receive described corresponding cooperation district transmission on different frequency range be carried out demodulation and merge.
The present invention is on the basis of existing LTE system, a kind of mthods, systems and devices of new enhancing multi-cooperation district signal have been proposed, on different frequency ranges, send data by network side of the present invention to described terminal, make the present invention to handle the coherent superposition that realizes the multi-cooperation district wave beam by the merging of terminal, thereby need not needs the base station constantly to carry out the phase place adjustment according to moving of terminal as prior art, so the present invention is lower to the displacement susceptibility of terminal.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification that scope of the present invention is by claims and be equal to and limit to these embodiment.
Claims (27)
1. the method for a multi-plot joint transmission is characterized in that, may further comprise the steps:
Network equipment judges whether terminal is collaborative terminal;
After described network equipment judged that described terminal is for collaborative terminal, described network equipment was determined candidate's cooperative cell set of described terminal, and notified candidate's cooperation district in described candidate's cooperative cell set with the end message of described terminal;
Described network equipment obtains described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set, and from described candidate's cooperative cell set, be chosen as cooperation district and the corresponding frequency range that described terminal sends data according to the described directional information of obtaining, wherein have at least the frequency range that cooperation district adopted different with other cooperation district, described each cooperation district of selection sends data to described terminal on each self-corresponding frequency range.
2. the method for multi-plot joint transmission as claimed in claim 1 is characterized in that, described network equipment judges whether terminal is that collaborative terminal comprises:
Described network equipment receives the peripheral cell ID of described terminal to report and the pilot signal strength of the peripheral cell that described terminal is measured;
Described network equipment judges according to the pilot signal strength of the peripheral cell of described peripheral cell ID and the measurement of described terminal whether terminal is collaborative terminal.
3. the method for multi-plot joint transmission as claimed in claim 1 is characterized in that described network equipment determines that candidate's cooperative cell set of described terminal comprises:
Whether the pilot signal strength of judging described peripheral cell is greater than threshold value;
If the pilot signal strength of peripheral cell, is then selected the candidate cooperation district of described peripheral cell as described terminal greater than threshold value.
4. the method for multi-plot joint transmission as claimed in claim 1 is characterized in that described network equipment obtains described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set and comprises:
Described each candidate's cooperation district receives the uplink pilot signal that described terminal sends, and obtains described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set according to described uplink pilot signal, and reports described network equipment.
5. the method for multi-plot joint transmission as claimed in claim 4, it is characterized in that, obtain described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set at described network equipment, and from described candidate's cooperative cell set, be chosen as after the cooperation district and corresponding frequency range that described terminal sends data according to the described directional information of obtaining, also comprise:
Described network equipment calculates the wave beam forming weighing vector of described each cooperation district to described terminal according to the directional information of described terminal or by the uplink channel information that described uplink pilot signal estimates;
Perhaps, described terminal calculates the wave beam forming weighing vector of described each cooperation district to described terminal, feeds back to network equipment by up channel again.
6. the method for multi-plot joint transmission as claimed in claim 1 is characterized in that described network equipment obtains described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set and comprises:
Described network equipment calculates described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set according to the signal power of the peripheral cell of described terminal feedback in conjunction with the geographical location information of peripheral cell, notifies each candidate's cooperation district with the directional information of described terminal in each candidate's cooperation district then.
7. the method for multi-plot joint transmission as claimed in claim 6, it is characterized in that, obtain described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set at described network equipment, and from described candidate's cooperative cell set, be chosen as after the cooperation district and corresponding frequency range that described terminal sends data according to the described directional information of obtaining, also comprise:
Described network equipment sends control signaling to described terminal and indicates the shared time-frequency domain resources of data that is sent to described terminal.
8. the method for multi-plot joint transmission as claimed in claim 7 is characterized in that, also comprises: include the dedicated pilot that described terminal is used for demodulating data in the time of carrying the data that are sent to described terminal.
9. the method for multi-plot joint transmission as claimed in claim 8 is characterized in that, also comprises: the figuration weighing vector of described dedicated pilot is identical with the figuration weighing vector of data in the described time.
10. the method for multi-plot joint transmission as claimed in claim 8 is characterized in that, also comprises: described terminal receives data according to described control signaling and described dedicated pilot.
11. the method for multi-plot joint transmission as claimed in claim 10 is characterized in that, after described terminal is according to described control signaling and described dedicated pilot reception data, also comprises:
Described terminal receives the data of described corresponding cooperation district transmission and the data that receive is merged on different frequency range, carry out demodulation afterwards;
Perhaps, described terminal will receive the data of described corresponding cooperation district transmission earlier and carry out demodulation on different frequency range, merge again.
12. the method for multi-plot joint transmission as claimed in claim 1, it is characterized in that, obtain described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set at described network equipment, and from described candidate's cooperative cell set, be chosen as cooperation district and the corresponding frequency range that described terminal sends data according to the described directional information of obtaining, wherein have at least the frequency range that cooperation district adopted different with other cooperation district after, also comprise:
Described network equipment control cooperation district with other cooperation districts be the frequency allocation of described terminal distribution give with described terminal angle intervals greater than the terminal of certain value or the terminal of center of housing estate, perhaps do not send out data any, and should control during the transmission data with described terminal angle intervals greater than the interference of the terminal of the terminal of certain value or center of housing estate to described terminal.
13. the method as each described multi-plot joint transmission of claim 1-12 is characterized in that described network equipment is the home base station of described terminal, or the base station of cooperation district, or the mobile management entity MME under the described base station.
14. a multi-plot joint system for transmitting is characterized in that, comprises network equipment and terminal,
Described network equipment, be used to judge whether terminal is collaborative terminal, judging candidate's cooperative cell set of determining described terminal after described terminal is for collaborative terminal, and notify candidate's cooperation district in described candidate's cooperative cell set with the end message of described terminal, and obtain described terminal directional information in each candidate's cooperation district in candidate's cooperative cell set, and from described candidate's cooperative cell set, be chosen as cooperation district and the corresponding frequency range that described terminal sends data according to the described directional information of obtaining, wherein have at least the frequency range that cooperation district adopted different with other cooperation district, described each cooperation district of selection sends data to described terminal on each self-corresponding frequency range;
Described terminal is used on different frequency range receiving data that described corresponding cooperation district sends and the data that receive is merged.
15. multi-plot joint system for transmitting as claimed in claim 14 is characterized in that, described network equipment is the home base station of described terminal, or the base station of cooperation district, or the mobile management entity MME under the described base station.
16. a network equipment is characterized in that, comprises judge module, cooperation district determination module, directional information acquisition module and selects module,
Described judge module is used to judge whether terminal is collaborative terminal;
Described cooperation district determination module is used for judging candidate's cooperative cell set of determining described terminal after described terminal is for collaborative terminal at described judge module, and notifies candidate's cooperation district in described candidate's cooperative cell set with the end message of described terminal;
Described directional information acquisition module is used for obtaining the directional information of described terminal in each candidate's cooperation district of candidate's cooperative cell set;
Described selection module, the described directional information that is used for obtaining according to described directional information acquisition module is chosen as cooperation district and the corresponding frequency range that described terminal sends data from described candidate's cooperative cell set, wherein have at least the frequency range that cooperation district adopted different with other cooperation district, described each cooperation district of selection sends data to described terminal on each self-corresponding frequency range.
17. network equipment as claimed in claim 16, it is characterized in that, also comprise receiver module, be used to receive the peripheral cell ID of described terminal to report and the pilot signal strength of the peripheral cell that described terminal is measured, and the pilot signal strength of the peripheral cell that detected peripheral cell ID and described terminal are measured offers described judge module, and the pilot signal strength of the peripheral cell of being measured according to described peripheral cell ID and described terminal by described judge module judges whether terminal is to work in coordination with terminal.
18. network equipment as claimed in claim 16 is characterized in that, described cooperation district determination module is selected candidate's cooperation district of described terminal according to the pilot signal strength of described peripheral cell.
19. network equipment as claimed in claim 16, it is characterized in that, described directional information acquisition module comprises the reception submodule, be used to receive the directional information of described terminal in described each candidate's cooperation district that described each candidate's cooperation district reports, described candidate's cooperation district obtains the directional information of described terminal in described each candidate's cooperation district according to the uplink pilot signal that described terminal sends.
20. network equipment as claimed in claim 16 is characterized in that, described directional information acquisition module comprises that feedback receives submodule, calculating sub module and notice submodule,
Described feedback receives submodule, is used to receive the signal power of the peripheral cell of described terminal feedback;
Described calculating sub module, the signal power that is used for receiving the peripheral cell that submodule receives according to described feedback is calculated the directional information of described terminal in each candidate's cooperation district of candidate's cooperative cell set in conjunction with the geographical location information of peripheral cell;
Described notice submodule is used for notifying each candidate's cooperation district with the directional information of described terminal in each candidate's cooperation district that described calculating sub module is calculated.
21. network equipment as claimed in claim 16, it is characterized in that, also comprise wave beam forming weighing vector computing module, be used for calculating the wave beam forming weighing vector of described each cooperation district described terminal according to the directional information of described terminal or by the uplink channel information that described uplink pilot signal estimates.
22. network equipment as claimed in claim 21 is characterized in that, also comprises the control signaling sending module, is used for being sent to the shared time-frequency domain resources of data of described terminal to the terminal indication that sends control signaling.
23. network equipment as claimed in claim 22 is characterized in that, carries in the time of the data that are sent to described terminal to include the dedicated pilot that described terminal is used for demodulating data.
24. network equipment as claimed in claim 23 is characterized in that, the figuration weighing vector of described dedicated pilot is identical with the figuration weighing vector of data in the described time.
25., it is characterized in that described network equipment is the home base station of described terminal, or the base station of cooperation district as the described network equipment of claim 16-24, or the MME under the described base station.
26. a terminal is characterized in that, comprises receiver module and demodulation module,
Described receiver module is used for receiving the data that described corresponding cooperation district sends on different frequency range;
Described demodulation module, the data that are used for described receiver module is received merge.
27. terminal as claimed in claim 26 is characterized in that, described receiver module receives data according to described control signaling and described dedicated pilot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810239044A CN101754361B (en) | 2008-12-05 | 2008-12-05 | Method, system and device for multi-cell joint transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810239044A CN101754361B (en) | 2008-12-05 | 2008-12-05 | Method, system and device for multi-cell joint transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101754361A true CN101754361A (en) | 2010-06-23 |
| CN101754361B CN101754361B (en) | 2012-09-05 |
Family
ID=42480558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810239044A Active CN101754361B (en) | 2008-12-05 | 2008-12-05 | Method, system and device for multi-cell joint transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101754361B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316510A (en) * | 2010-06-30 | 2012-01-11 | 中兴通讯股份有限公司 | Coordinated transmission point selection method and selection device |
| CN103139905A (en) * | 2011-11-29 | 2013-06-05 | 华为技术有限公司 | Method and device for positioning user equipment |
| WO2019014922A1 (en) * | 2017-07-21 | 2019-01-24 | 南通朗恒通信技术有限公司 | Method and device for user and base station for beam forming |
| CN111436064A (en) * | 2019-01-11 | 2020-07-21 | 中国移动通信有限公司研究院 | Method and device for cooperative transmission of control channel |
| CN112203285A (en) * | 2020-09-07 | 2021-01-08 | 北京遥感设备研究所 | Multi-cell joint cooperative transmission control method, device and system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6504845B1 (en) * | 1997-12-19 | 2003-01-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Centralized queuing for ATM node |
| US6804246B1 (en) * | 1997-12-19 | 2004-10-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Asynchronous transfer mode system handling differing AAL protocols |
| CN101136725B (en) * | 2007-10-09 | 2010-04-14 | 北京邮电大学 | Layered cooperative transmission implementing method for wireless network |
| CN101217302B (en) * | 2008-01-18 | 2011-05-11 | 清华大学 | A collaborative communication method in multi-user wireless network based on time space diversity encoding and decoding |
-
2008
- 2008-12-05 CN CN200810239044A patent/CN101754361B/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316510A (en) * | 2010-06-30 | 2012-01-11 | 中兴通讯股份有限公司 | Coordinated transmission point selection method and selection device |
| CN102316510B (en) * | 2010-06-30 | 2016-01-20 | 中兴通讯股份有限公司 | A kind of system of selection of the sending point that cooperates and choice device |
| CN103139905A (en) * | 2011-11-29 | 2013-06-05 | 华为技术有限公司 | Method and device for positioning user equipment |
| WO2013078888A1 (en) * | 2011-11-29 | 2013-06-06 | 华为技术有限公司 | Method and apparatus for positioning user equipment |
| CN103139905B (en) * | 2011-11-29 | 2016-07-13 | 华为技术有限公司 | The method and apparatus that subscriber equipment is positioned |
| US9838845B2 (en) | 2011-11-29 | 2017-12-05 | Huawei Technologies Co., Ltd. | Method and apparatus for positioning user equipment |
| WO2019014922A1 (en) * | 2017-07-21 | 2019-01-24 | 南通朗恒通信技术有限公司 | Method and device for user and base station for beam forming |
| CN110771058A (en) * | 2017-07-21 | 2020-02-07 | 南通朗恒通信技术有限公司 | Method and device used for beamforming user and base station |
| CN110771058B (en) * | 2017-07-21 | 2023-02-03 | 南通朗恒通信技术有限公司 | Method and device used for beamforming user and base station |
| CN111436064A (en) * | 2019-01-11 | 2020-07-21 | 中国移动通信有限公司研究院 | Method and device for cooperative transmission of control channel |
| CN112203285A (en) * | 2020-09-07 | 2021-01-08 | 北京遥感设备研究所 | Multi-cell joint cooperative transmission control method, device and system |
| CN112203285B (en) * | 2020-09-07 | 2023-10-17 | 北京遥感设备研究所 | Multi-cell joint cooperative transmission control method, device and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101754361B (en) | 2012-09-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2756606B1 (en) | Method and apparatus for beam allocation in wireless communication system | |
| EP3101942B1 (en) | Improvement of reference signals measurement using synchronisation signals | |
| KR101502805B1 (en) | Mimo-based multiple base station collaborative communication method and apparatus | |
| KR101995798B1 (en) | Device and method for random access in a wireless communication system using beamformig | |
| CN102472809B (en) | Apparatus and method for positioning a wireless user equipment | |
| CN110602721B (en) | Communication method and device | |
| CN101877887B (en) | Downlink transmission control method and device of cooperative multicast system | |
| CN101686557B (en) | Method and device for sending multi-cell scheduling information and user equipment | |
| CN102812756B (en) | Base station equipment, terminal equipment, receiver end base station equipment and wireless communications method | |
| EP2850743B1 (en) | Communication method and apparatus for jointly transmitting and receiving signal in mobile communication system | |
| CN102550064B (en) | Downlink precoding index based on antenna for base station configuration is worked in coordination with | |
| EP3455948A1 (en) | Method, system and apparatus of beam selection | |
| CN101494484B (en) | Downlink beam forming method | |
| KR20210134979A (en) | Method and apparatus for configuring 5G new wireless uplink positioning reference signal | |
| KR20130043078A (en) | Apparatus and method for controlling uplink in wireless communication system | |
| KR20130030404A (en) | Apparatus and method for operating multiple beamforming transceiver in wireless communication system | |
| AU2012295039A1 (en) | Method and apparatus for tracking beam in wireless communication system | |
| KR20070067206A (en) | Wireless terminal location using apparatus and methods employing carrier diversity | |
| CN102326341A (en) | The method and the mobile radio station/base station apparatus thereof of transmission and receiving feedback information | |
| TW201412049A (en) | Method of cooperative MIMO wireless communication and base station using the same | |
| CN101753191A (en) | Method, system and device for coordinating multi-cell interference suppression | |
| CN110121913A (en) | Beam selection method, apparatus and system | |
| CN101754361B (en) | Method, system and device for multi-cell joint transmission | |
| KR20230005134A (en) | Method and Apparatus for Determining Sidelink Resources | |
| CN104471887A (en) | Method and access point for assigning sounding resources |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20110407 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| 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 |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20110407 Address after: 100191 Haidian District, Xueyuan Road, No. 40, Applicant after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100083 Haidian District, Xueyuan Road, No. 29, Applicant before: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210617 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |