CN101640560B - Confirmation method of wave beam weight and device - Google Patents
Confirmation method of wave beam weight and device Download PDFInfo
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- CN101640560B CN101640560B CN2008101442973A CN200810144297A CN101640560B CN 101640560 B CN101640560 B CN 101640560B CN 2008101442973 A CN2008101442973 A CN 2008101442973A CN 200810144297 A CN200810144297 A CN 200810144297A CN 101640560 B CN101640560 B CN 101640560B
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Abstract
The invention discloses a confirmation method of wave beam weight and a device. The method comprises confirming a plurality of coordination nodes; and respectively confirming the wave beam weight of each coordination node in the plurality of coordination nodes according to the network topology structure of the plurality of coordination nodes. In the invention, the wave beam weight of each coordination node can be confirmed by using the network topology relation of the plurality of coordination nodes in no need of channel information feedback by a user, thus reducing channel expenditure and avoiding quantification error generated by channel quantification.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of confirmation method of wave beam weight and device.
Background technology
At present, no matter the multipath selectivity decline that becomes when the principal element that influences Reliability of Wireless Communication is still, is the reliability that improves wireless channel, still reduces the error rate of multidiameter fading channel, all is difficult, for example, and for reaching 10
-2Or 10
-3Bit error probability (BitError Rate; Abbreviate BER as), in no multipath white Gaussian noise (Additive WhiteGaussian Noise abbreviates AWGN as) channel; The signal to noise ratio that possibly need 1dB or 2dB; And in multipath fading environments, reach the error rate of same magnitude, possibly need the SNR of 10dB.
A kind of technology that can effectively reduce the influence of multipath fading is the signal diversifying technology, and it is through merging the influence that reduces fading channel from the signal of different fading channels.In space diversity scheme, through introducing the effect that many transmit antennas obtain the branch collection transmit leg and/or recipient, but need antenna distance must reach certain distance, different antennae can form separate channel like this.
Multiple-input and multiple-output (Multiple Input Out-put; Abbreviating MIMO as) technology is effectively to improve two kinds of aerial array treatment technologies of channel capacity and wireless network performance with wave beam formation (beamforming) technology; Mainly comprise orthogonal space time packet (Orthogonal Space Time Block Codes at present; Abbreviate OSTBC as), space-time block code (Space Time Trellis Codes; Abbreviate STTC as), precoding (precoding), technology such as beamforming (wave beam formation).
Because dimension that depends on bay that the capacity of mimo system and performance are strict and the correlation between antenna; Therefore many antennas and multi-antenna array have important function to improving power system capacity and performance; But in practical application, the application of many antennas receives the restriction of expense and physics restriction.
The collaboration MIMO technology of minizone can be under the situation that does not increase antenna amount and antenna distance, increases the quantity of antenna through the cooperation between a plurality of sub-districts, and for example, the antenna of two or more base stations is used for the MIMO emission jointly or receives.Multi-cell cooperating MIMO technology has advantage at the throughput and the aspect of performance that improve Cell Edge User.
At present, in multi-cell cooperating beamforming, mainly utilize following two kinds of methods to carry out beamforming and handle; The one, by control unit information data is carried out many antenna processing; And the signal that handled on each road is sent to cooperation cell carry out beamforming, the 2nd, each cooperation cell is carried out many antenna processing to information data separately, and beamforming is carried out on certain road handle; But in above-mentioned two kinds of methods; The wave beam weight of beamforming all is to obtain through the channel information that the contracted user feeds back, and can increase the channel overhead that channel feedback is brought like this, is prone to produce the quantization error that channel quantitative is caused.
Summary of the invention
Consider that the channel overhead that causes when having standing wave beam weight really in the correlation technique reaches the problem of quantization error more greatly and proposes the present invention, for this reason, main purpose of the present invention is to provide a kind of confirmation method of wave beam weight and device, to address the above problem.
According to an aspect of the present invention, a kind of confirmation method of wave beam weight is provided.
Confirmation method of wave beam weight according to the present invention comprises: confirm a plurality of cooperative nodes; Confirm the wave beam weight of each cooperative node in a plurality of cooperative nodes respectively according to the network topology structure of a plurality of cooperative nodes.
Wherein, confirm that the processing of a plurality of cooperative nodes is specially:, select to satisfy the predetermined node that requires as a plurality of cooperative nodes according to the metrical information of targeted customer's feedback.
Metrical information be the node that measures in advance of targeted customer under the situation of targeted customer's power, the node that satisfies predetermined requirement to targeted customer's power in all measured node is confirmed as cooperative node;
In metrical information is under the situation of the channel condition information that measures in advance of targeted customer, and the predetermined pairing node of channel condition information that requires of satisfying of targeted customer's feedback is confirmed as cooperative node;
In metrical information is under the situation of the channel quality information that measures in advance of targeted customer, confirms as cooperative node with satisfying the predetermined node that requires to targeted customer's channel quality in all measured node.
Wherein, utilizing metrical information to confirm in the cooperative node process, under the situation of load greater than predetermined threshold of the cooperative node of confirming, this cooperative node is being removed from a plurality of cooperative nodes of confirming.
Preferably, confirm respectively that according to the network topology structure of a plurality of cooperative nodes the processing of the wave beam weight of each cooperative node in a plurality of cooperative nodes is specially: according to the network topology structure of a plurality of cooperative nodes, estimation targeted customer's position; The position relation of targeted customer with respect to each cooperative node confirmed in the targeted customer's who obtains according to estimation position; Confirm the wave beam weight of each cooperative node with respect to the position relation of each cooperative node according to the targeted customer.
In addition; The wave beam weight of confirming each cooperative node in a plurality of cooperative nodes according to network topology respectively also comprises: after being estimated to targeted customer's position according to network topology structure and metrical information, obtain the position relation of targeted customer with respect to each cooperative node; Position relation according to targeted customer and each cooperative node; Select design factor to calculate the wave beam weight of current cooperative node; Wherein, whether design factor is adjusted with other targeted customers are multiplexing according to the load information or the cooperative node of network topology relation or cooperative node.
Wherein, Network topology structure according to a plurality of cooperative nodes; Estimation targeted customer's the processing of position is specially: according to the metrical information estimation targeted customer of targeted customer's the feedback distance to cooperative node; And utilize distance and network topology structure to estimate targeted customer's position; Wherein, metrical information comprises one of following at least: the cooperative node that the targeted customer measures in advance is to targeted customer's power, the channel quality information that the targeted customer measures in advance, the channel condition information that the targeted customer measures in advance.
Preferably; After the wave beam weight according to each cooperative node in the definite respectively a plurality of cooperative nodes in targeted customer's position; Method also comprises: according to metrical information; The wave beam weight of adjustment cooperative node, wherein, it is one of following that metrical information comprises at least: the cooperative node that the targeted customer measures in advance is to targeted customer's power, the channel quality information that the targeted customer measures in advance, the channel condition information that the targeted customer measures in advance; And/or according to the load-factor of cooperative node, the beam property of adjustment cooperative node, wherein, beam property comprise following one of at least: beamwidth, beam angle, beam gain.
Wherein, cooperative node comprises one of following: sub-district, base station, relay station, remote radio unit (RRU).
According to an aspect of the present invention, a kind of confirmation method of wave beam weight is provided.
Confirmation method of wave beam weight according to the present invention comprises: confirm a plurality of cooperative nodes; For each cooperative node in a plurality of cooperative nodes, corresponding beam vector group is set in advance respectively; For each cooperative node in a plurality of cooperative nodes, according to selecting a beam vector of coupling the most in the beam vector group of this cooperative node of position of targeted customer, and with the beam vector of selecting the data of this cooperative node are carried out weighting and launch.
Preferably; Under the quantity to the beam vector group of each cooperative node setting is a plurality of situation; Further comprise: according to the character of cooperative node; From a plurality of beam vector groups, select the beam vector group of a beam vector group as current cooperative node, wherein, it is one of following that character comprises at least: whether the load information of network topology structure, cooperative node, cooperative node be multiplexing with other targeted customers.
A kind of definite device of wave beam weight is provided according to an aspect of the present invention.
Definite device according to wave beam weight of the present invention comprises: first determination module is used for confirming a plurality of cooperative nodes; Second determination module is used for confirming respectively according to a plurality of cooperative node zone network topological structures the wave beam weight of a plurality of each cooperative node of cooperative node.
Wherein, second determination module also comprises: first confirms submodule, is used for the network topology structure according to a plurality of cooperative nodes, estimation targeted customer's position; Second confirms submodule, and the position relation of targeted customer with respect to each cooperative node confirmed in the targeted customer's who is used for obtaining according to estimation position; The 3rd confirms submodule, is used for confirming with respect to the position relation of each cooperative node according to the targeted customer wave beam weight of each cooperative node.
A kind of definite device of wave beam weight is provided according to an aspect of the present invention.
Definite device according to wave beam weight of the present invention comprises: determination module is used for confirming a plurality of cooperative nodes; Module is set, is used for each cooperative node of a plurality of cooperative nodes is provided with corresponding beam vector group respectively; Transmitter module is used for each cooperative node for a plurality of cooperative nodes, from the beam vector group, selects a beam vector of coupling the most according to targeted customer's position, and with the beam vector of selecting the data of this cooperative node is carried out the weighting emission.
Wherein, module is set specifically comprises: submodule is set, is used for each cooperative node is provided with a plurality of beam vector groups respectively; Select module; Be used for character according to cooperative node; From a plurality of beam vector groups, select the beam vector group of a beam vector group as current cooperative node; Wherein, character comprises one of following at least: whether network topology relation, the load information of cooperative node, cooperative node be multiplexing with other targeted customers.
Through above-mentioned at least one technical scheme of the present invention; Confirm the wave beam weight of each cooperative node through the network topology relation of a plurality of cooperative nodes; Do not need the user feedback channel information, can reduce channel overhead, can avoid the quantization error that produces by channel quantitative simultaneously.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the confirmation method of wave beam weight of the inventive method embodiment;
Fig. 2 is the detailed process flow chart of the confirmation method of wave beam weight of the instance one according to the present invention;
Fig. 3 (a) is that the network topology according to the embodiment of the invention concerns sketch map;
Fig. 3 (b) is the sketch map according to the fixed beam direction indication of the embodiment of the invention;
Fig. 4 is the detailed process flow chart of the confirmation method of wave beam weight of the instance two according to the present invention;
Fig. 5 is the detailed process flow chart of the confirmation method of wave beam weight of the instance three according to the present invention;
Fig. 6 is the structured flowchart according to definite device of the wave beam weight of the embodiment of the invention;
Fig. 7 is the structured flowchart according to the preferred structure of definite device of the wave beam weight of the embodiment of the invention;
Fig. 8 is the structured flowchart according to definite device of the wave beam weight of the embodiment of the invention.
Fig. 9 is the structured flowchart according to the preferred structure of definite device of the wave beam weight of the embodiment of the invention.
Embodiment
Functional overview
In the present invention, a kind of scheme that is used for confirming wave beam weight is provided, its network topology through a plurality of cooperative nodes concerns to confirm the wave beam weight of each cooperative node.Cooperative node of mentioning hereinafter or cooperative node can be sub-district (Cell), base station (BaseStation; Abbreviate BS as), relay station, remote radio unit (RRU) (RRU) etc.; Main control unit can be radio network controller (Radio Network Controller abbreviates RNC as), base station controller (Base Station Controller) etc.
Method embodiment one
According to the embodiment of the invention, a kind of confirmation method of wave beam weight is provided.Fig. 1 is the flow chart according to the confirmation method of wave beam weight of the embodiment of the invention, and is as shown in Figure 1, and this method may further comprise the steps:
Step S102 confirms a plurality of cooperative nodes (with reference to cooperative node); In present communication network, user's (that is, above-mentioned described targeted customer) need carry out Feedback of Power to the base station, and based on this, the cooperative node of mentioning here refers to its cooperative node of feedback power in preset range from the user that receives;
Step S104 is according to the wave beam weight of each cooperative node in the definite respectively a plurality of cooperative nodes of a plurality of cooperative node zone network topological structures.
Through the technical scheme that the embodiment of the invention provides, can confirm the wave beam weight of each cooperative node through the network topology relation of a plurality of cooperative nodes.
Wherein, in step S102, can select to satisfy the predetermined node that requires as a plurality of cooperative nodes, specifically comprise following three kinds of modes according to the metrical information of targeted customer's feedback:
Mode one, metrical information be the node that measures in advance of targeted customer under the situation of targeted customer's power, the node that satisfies predetermined requirement to targeted customer's power in all measured node is confirmed as cooperative node;
Mode two is under the situation of the channel condition information that measures in advance of targeted customer in metrical information, and the predetermined pairing node of channel condition information that requires of satisfying of targeted customer's feedback is confirmed as cooperative node;
Mode three is under the situation of the channel quality information that measures in advance of targeted customer in metrical information, confirms as cooperative node with satisfying the predetermined node that requires to targeted customer's channel quality in all measured node.
Need explanation to be, utilizing metrical information to confirm in the cooperative node process, under the situation of load greater than predetermined threshold of the cooperative node of confirming, this cooperative node is removed from a plurality of cooperative nodes of confirming.
For each cooperative node, according to the network topology structure of a plurality of cooperative nodes, estimation targeted customer's position; The position relation of targeted customer with respect to each cooperative node confirmed in the targeted customer's who obtains according to estimation position; Confirm the wave beam weight of each cooperative node with respect to the position relation of each cooperative node according to the targeted customer; Wherein, Can confirm the position angle of user according to user's position, afterwards, further confirm the wave beam weight of cooperative node according to position angle with respect to cooperative node.
Particularly; Can utilize following processing to confirm the wave beam weight of each cooperative node: for each cooperative node; According to network topology structure, be estimated to targeted customer's position in conjunction with metrical information after, obtain the position relation of user with respect to each cooperative node; And according to the position of targeted customer and cooperative node relation; Select design factor to calculate the wave beam weight of current cooperative node, wherein, can concern according to network topology, the load information of cooperative node, cooperative node whether with the multiplexing aforementioned calculation parameter of selecting of other targeted customers.
In addition; Can utilize following processing estimation targeted customer's position: according to the metrical information estimation targeted customer of targeted customer's feedback distance to cooperative node; And utilize distance and network topology structure to estimate targeted customer's position; Wherein, metrical information comprises one of following at least: the cooperative node that the targeted customer measures in advance is to targeted customer's power, the channel quality information that the targeted customer measures in advance, the channel condition information that the targeted customer measures in advance.
For each cooperative node, after the wave beam weight of having confirmed this cooperative node, can also adjust wave beam weight.The mode of adjustment can have multiple; Below provided the description of dual mode: mode one: according to metrical information; The wave beam weight of adjustment cooperative node; Wherein, metrical information comprises one of following at least: the cooperative node that the targeted customer measures in advance is to targeted customer's power, the channel quality information that the targeted customer measures in advance, the channel condition information that the targeted customer measures in advance, for example; Can utilize the wave beam weight of the distance adjustment cooperative node between user and the cooperative node according to the distance of above-mentioned metrical information estimation user and cooperative node; Mode two, according to the beam property of the load-factor of cooperative node adjustment cooperative node, wherein, beam property comprise following one of at least: beamwidth, beam angle, beam gain.
Describe with the processing in instance one and two pairs of these methods of instance below.
Instance one
Fig. 2 is the detailed process flow chart according to the confirmation method of wave beam weight of the inventive method embodiment, and is as shown in Figure 2, and this method may further comprise the steps (step S202. step S212):
Step S202; Main control unit obtains targeted customer's (that is, user mentioned above) feedback measurement report, is confirming to satisfy under the situation of collaboration MIMO; Can a plurality of cooperative nodes of its feedback power in preset range be confirmed as the cooperative node that this participates in cooperation; And obtain the numbering of each cooperative node, obtain the network topological diagram (shown in Fig. 3 (a), will be described below) of above-mentioned a plurality of cooperative nodes simultaneously;
Step S204; Main control unit is according to the network topology structure figure that obtains among the step S202; Confirm targeted customer's position; Particularly, can the polygonal center that a plurality of cooperative node is formed be confirmed as targeted customer's position, can think that targeted customer's physical location is positioned near the scope in this center;
Step S206, for each cooperative node, main control unit is confirmed the position angle of user with respect to cooperative node respectively according to user's position, and confirms the wave beam weight of cooperative node according to position angle.
The network topology that Fig. 3 (a) has provided each cooperative node concerns sketch map; Wherein,
represents the targeted customer; Each hexagonal area is represented the coverage of a cooperative node, representes cooperative node with dark hexagon among the figure, and white hexagon representes not participate in the node of active user's business collaboration; Wherein, main control unit is independent of each cooperative node.Shown in Fig. 3 (a); With cooperative node 3 is example, according to other cooperative nodes (1,4; 5) in network with the position of this cooperative node relation; Main control unit can be confirmed the lower left direction of current goal user's home position for this node, calculates cooperative node 3 and targeted customer's position angle, and calculates the wave beam weight of current cooperative node according to this position angle;
Step S208, the wave beam weight of each cooperative node that main control unit will be confirmed send to corresponding cooperative node;
Step S210, each cooperative node obtains the emission data respectively, simultaneously according to targeted customer's present located sub-district design pilot tone; Wherein, each cooperative node can be regarded an antenna port as, and itself and other cooperative node constitutes many antenna ports system; Wherein, Corresponding one tunnel pilot signal of antenna port, for some cooperative nodes, the pilot tone of this antenna port correspondence is as the dedicated pilot of this node; And for the The whole control unit, each port is equivalent to the public guide frequency of cooperative system.
For the emission Data Acquisition, can realize through following dual mode at least.
Method 1: main control unit to data flow with STC (Space-time Code; Space Time Coding)/STBC (Space-time Block Code, Space-Time Block Coding)/STTC (SpaceTime Trellis Codes, space-time block code) mode carries out branch collection coding; Perhaps carrying out multithread precoding handles; And send corresponding data to cooperative node, for main control unit, each cooperative node is equivalent to the different antennae mouth of many antennas.
Method 2: control unit sends to each cooperative node with data flow, by each cooperative node data stream is carried out branch collection or multiplexing and encoding processing, obtains corresponding data.
Step S212, each cooperative node utilize the wave beam weight of acquisition that the emission data are carried out the weighting emission respectively.
According to above implementation step,, confirm the wave beam weight of each cooperative node by main control unit according to the network topology relation of a plurality of cooperative nodes; Do not need the user feedback channel information; Reduce channel overhead, avoided the quantization error that produces by channel quantitative, and realized the emission of data.
Instance two
Fig. 4 is the detailed process flow chart according to the confirmation method of wave beam weight of the inventive method embodiment, and is as shown in Figure 4, and this method may further comprise the steps:
Step S402 is with above-mentioned step S202;
Step S404, main control unit sends to above-mentioned a plurality of cooperative node with the numbering and the network topological diagram of the cooperative node of confirming among the step S402;
Step S406, each cooperative node confirm the position angle of user with respect to self according to user's position respectively, afterwards, can confirm the wave beam weight of cooperative node according to the position angle of confirming;
After having confirmed wave beam weight, each cooperative node can also be according to user and the distance between it, the wave beam weight of adjustment cooperative node; In addition, can also be according to the load-factor of cooperative node, the weighting parameter of the wave beam weight of adjustment cooperative node;
Step S408 is with above-mentioned step S210;
Step S410, each cooperative node utilize definite wave beam weight that the emission data are carried out the weighting emission respectively.
Through this embodiment, according to the network topology relation of a plurality of cooperative nodes, confirm the wave beam weight of himself by each cooperative node, and do not need the user feedback channel information, reduced channel overhead, avoided the quantization error that produces by channel quantitative.
Method embodiment two
According to the embodiment of the invention, a kind of confirmation method of wave beam weight is provided.
Confirm that according to the wave beam weight of the embodiment of the invention method comprises: confirm a plurality of cooperative nodes; For each cooperative node in said a plurality of cooperative nodes, corresponding beam vector group is set respectively in advance, wherein, comprise a plurality of beam vector in the beam vector group; For each cooperative node in said a plurality of cooperative nodes; According to selecting a beam vector of coupling the most in the beam vector group of this cooperative node of position of targeted customer, and with the said beam vector of selecting the data of this cooperative node are carried out weighting and launch.Like this, can from the beam vector group, select a corresponding beam vector according to user's position, and confirm the wave beam weight of cooperative node according to the beam vector of selecting.
What more than describe is the situation that a beam vector group is set for each cooperative node; But the invention is not restricted to this; For each cooperative node; Also a plurality of beam vector groups can be set in advance respectively, afterwards according to the load information of this cooperative node, network topology relation, this cooperative node whether with factors such as other targeted customers are multiplexing, from a plurality of beam vector groups, select a beam vector group as an above-mentioned beam vector group of coupling the most.
Under above-mentioned situation, when selecting beam vector, can combine the load-factor of cooperative node; From a plurality of beam vector groups, select a beam vector group as a beam vector group of mating the most; For example, lighter in the load of cooperative node, and during according to the difficult exact position that obtains the targeted customer of the network topology of determining; Can adopt the beam vector group of lobe broad and therefrom select beam vector; Load at cooperative node is bigger, and can more accurately confirm according to the network topology of determining can to select the narrower beam vector group of lobe and therefrom to select beam vector under targeted customer's the situation of position.
Below further combine the processing in three pairs of these methods of instance to describe.
Instance three
Fig. 5 is the detailed process flow chart according to the confirmation method of wave beam weight of the inventive method embodiment, and is as shown in Figure 5, and this method comprises following processing:
Step S502 for each cooperative node, is provided with corresponding beam vector group respectively in advance, wherein, comprise a plurality of beam vector in the beam vector group, and the direction of each beam vector distributes evenly;
Step S504; Main control unit obtains targeted customer's feedback measurement report; Confirming to satisfy under the situation of collaboration MIMO; Can a plurality of cooperative nodes of its feedback power in preset range be confirmed as the cooperative node that this participates in cooperation, and obtain the numbering of each cooperative node, obtain the network topological diagram of above-mentioned a plurality of cooperative nodes simultaneously;
Step S506, main control unit confirm targeted customer's position according to the network topological diagram that obtains among the step S504, particularly, can the polygonal center that a plurality of cooperative node is formed be confirmed as targeted customer's position;
Step S508 selects a corresponding beam vector according to user's position from the beam vector group, and confirms the wave beam weight of cooperative node according to the beam vector of selecting.
For example; Fig. 3 (b) shows N the beam vector that cooperative node is provided with, and supposes that the cooperative node 3 shown in Fig. 3 (a) has adopted the direction vector group shown in Fig. 3 (b), and then can to judge N beam vector among direction vector Fig. 3 (b) be optimal direction vector to cooperative node 3; Equally; Other cooperative nodes (1,4,5) basis just can be determined beam vector separately with cooperative node 3 similar methods.
Step S508 is with above-mentioned step S210;
Step S510, the wave beam weight that each cooperative node utilization is confirmed carries out the weighting emission to the emission data.
Pass through the foregoing description; Through the beam vector group being set and selecting beam vector; And each cooperative node concerns the flexible configuration beam vector according to network topology, can not need the user feedback channel information so that cooperative node is confirmed the wave beam weight of himself; Reduce channel overhead, avoided the quantization error that produces by channel quantitative simultaneously.
Device embodiment
According to the embodiment of the invention, a kind of definite device of wave beam weight is provided.
Fig. 6 shows the structural framing figure according to definite device of the wave beam weight of the embodiment of the invention, and is as shown in Figure 6, and this device comprises first determination module 10 and second determination module 20, describes in the face of each module down:
First determination module 10 is used for confirming a plurality of cooperative nodes;
Second determination module 20 is used for confirming respectively according to a plurality of cooperative node zone network topological structures the wave beam weight of a plurality of each cooperative node of cooperative node, and this module can be connected to first determination module 10;
When confirming wave beam weight according to user's position angle; As shown in Figure 7; Second determination module 20 comprises that also first confirms submodule 201, second definite submodule 202 and the 3rd definite submodule 203; First confirms submodule 201, is used for the network topology structure according to a plurality of cooperative nodes, estimation targeted customer's position; Second confirms submodule 202, and the position relation of targeted customer with respect to each cooperative node confirmed in the targeted customer's who is used for obtaining according to estimation position; The 3rd confirms submodule 203, is used for confirming with respect to the position relation of each cooperative node according to the targeted customer wave beam weight of each cooperative node.
Fig. 8 shows the structural framing figure according to definite device of the wave beam weight of the embodiment of the invention, and is as shown in Figure 7, and this device comprises determination module 12 and module 14 and transmitter module 16 are set, describes in the face of each module down:
Determination module 12 is used for confirming a plurality of cooperative nodes;
Module 14 is set, is used for each cooperative node of a plurality of cooperative nodes is provided with corresponding beam vector group respectively, this module can be connected to determination module 12;
Transmitter module 16; Be used for each cooperative node for a plurality of cooperative nodes; From the beam vector group, select a beam vector of coupling the most according to targeted customer's position; And with the beam vector of selecting the data of this cooperative node are carried out weighting and launch, this module can be connected to module 14 is set.
When the beam vector group being set confirming wave beam weight, as shown in Figure 9, this is provided with module 14, can comprise submodule 141 being set and selecting module 142, wherein, submodule 141 is set is used for each cooperative node is provided with a plurality of beam vector groups respectively; Select module 142 to be used for character according to cooperative node; From a plurality of beam vector groups, select the beam vector group of a beam vector group as current cooperative node; Wherein, character comprises one of following at least: whether network topology relation, the load information of cooperative node, cooperative node be multiplexing with other targeted customers.
Definite device of the wave beam weight that provides through the embodiment of the invention; Confirm the wave beam weight of each cooperative node through the network topology relation of a plurality of cooperative nodes; Do not need the user feedback channel information, reduced channel overhead, avoided the quantization error that produces by channel quantitative simultaneously.
As stated; By means of confirmation method of wave beam weight provided by the invention and/or device; Confirm the wave beam weight of each cooperative node through the network topology relation of a plurality of cooperative nodes; Do not need the user feedback channel information, reduced channel overhead, avoided the quantization error that produces by channel quantitative simultaneously.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a confirmation method of wave beam weight is characterized in that, comprising:
Confirm a plurality of cooperative nodes;
Confirm the wave beam weight of each cooperative node in said a plurality of cooperative nodes respectively according to the network topology structure of said a plurality of cooperative nodes;
Wherein, confirm respectively that according to the network topology structure of said a plurality of cooperative nodes the processing of the wave beam weight of each cooperative node in said a plurality of cooperative nodes is specially:
According to the network topology structure of said a plurality of cooperative nodes, estimation targeted customer's position;
The position relation of said targeted customer with respect to said each cooperative node confirmed in the said targeted customer's who obtains according to estimation position;
Confirm the wave beam weight of said each cooperative node with respect to the position relation of said each cooperative node according to said targeted customer.
2. method according to claim 1 is characterized in that, confirms that the processing of said a plurality of cooperative nodes is specially:
According to the metrical information of said targeted customer's feedback, select to satisfy the predetermined node that requires as said a plurality of cooperative nodes.
3. method according to claim 2 is characterized in that,
Said metrical information be the node that measures in advance of said targeted customer under the situation of said targeted customer's power, the node that satisfies said predetermined requirement to said targeted customer's power in all measured node is confirmed as cooperative node;
In said metrical information is under the situation of the channel condition information that measures in advance of said targeted customer, and the pairing node of the channel condition information that satisfies said predetermined requirement of said targeted customer's feedback is confirmed as cooperative node;
In said metrical information is under the situation of the channel quality information that measures in advance of said targeted customer, confirms as cooperative node with satisfying the predetermined node that requires to said targeted customer's channel quality in said all measured node.
4. method according to claim 3; It is characterized in that; Utilizing said metrical information to confirm in the said cooperative node process, under the situation of load greater than predetermined threshold of the said cooperative node of confirming, this cooperative node is being removed from said a plurality of cooperative nodes of confirming.
5. method according to claim 1 is characterized in that, confirms respectively that according to said network topology the wave beam weight of each cooperative node in said a plurality of cooperative nodes also comprises:
After being estimated to said targeted customer's position according to the metrical information of said network topology structure and said targeted customer feedback, obtain the position relation of said targeted customer with respect to said each cooperative node;
Position relation according to said targeted customer and said each cooperative node; Select design factor to calculate the wave beam weight of current cooperative node; Wherein, whether said design factor is adjusted with other targeted customers are multiplexing according to the load information or the cooperative node of network topology relation or cooperative node.
6. method according to claim 1 is characterized in that, said network topology structure according to said a plurality of cooperative nodes estimates that the processing of said targeted customer's position is specially:
Estimate the distance of said targeted customer according to the metrical information of said targeted customer's feedback to said cooperative node; And utilize said distance and said network topology structure to estimate said targeted customer's position; Wherein, said metrical information comprises one of following at least: the channel condition information that the channel quality information that the cooperative node that said targeted customer measures in advance measures to said targeted customer's power, said targeted customer in advance, said targeted customer measure in advance.
7. method according to claim 1 is characterized in that, after the wave beam weight according to each cooperative node in the definite respectively said a plurality of cooperative nodes in said targeted customer's position, said method also comprises:
Metrical information according to said targeted customer's feedback; Adjust the wave beam weight of said cooperative node; Wherein, said metrical information comprises one of following at least: the channel condition information that the channel quality information that the cooperative node that said targeted customer measures in advance measures to said targeted customer's power, said targeted customer in advance, said targeted customer measure in advance; And/or
According to the load-factor of said cooperative node, adjust the beam property of said cooperative node, wherein, said beam property comprise following one of at least: beamwidth, beam angle, beam gain.
8. according to each described method in the claim 1 to 7, it is characterized in that it is one of following that said cooperative node comprises: sub-district, base station, relay station, remote radio unit (RRU).
9. a confirmation method of wave beam weight is characterized in that, comprising:
Confirm a plurality of cooperative nodes;
For each cooperative node in said a plurality of cooperative nodes, corresponding beam vector group is set in advance respectively;
Obtain the network topological diagram of said a plurality of cooperative nodes; Confirm targeted customer's position according to said network topological diagram; For each cooperative node in said a plurality of cooperative nodes; From the beam vector group of this cooperative node, select a beam vector of coupling the most according to said targeted customer's position, and the data of this cooperative node are carried out the weighting emission with the said beam vector of selecting.
10. method according to claim 9 is characterized in that, under the quantity to the said beam vector group of said each cooperative node setting is a plurality of situation, further comprises:
Character according to said cooperative node; From said a plurality of beam vector groups, select the beam vector group of a beam vector group as current cooperative node; Wherein, said character comprises one of following at least: whether the load information of network topology structure, cooperative node, cooperative node be multiplexing with other targeted customers.
11. definite device of a wave beam weight is characterized in that, comprising:
First determination module is used for confirming a plurality of cooperative nodes;
Second determination module is used for confirming respectively according to the network topology structure of said a plurality of cooperative nodes the wave beam weight of said a plurality of each cooperative node of cooperative node;
Wherein, said second determination module also comprises:
First confirms submodule, is used for the network topology structure according to said a plurality of cooperative nodes, estimation targeted customer's position;
Second confirms submodule, and the position relation of said targeted customer with respect to said each cooperative node confirmed in the said targeted customer's who is used for obtaining according to estimation position;
The 3rd confirms submodule, is used for confirming with respect to the position relation of said each cooperative node according to said targeted customer the wave beam weight of said each cooperative node.
12. definite device of a wave beam weight is characterized in that, comprising:
Determination module is used for confirming a plurality of cooperative nodes;
Module is set, is used for each cooperative node of said a plurality of cooperative nodes is provided with corresponding beam vector group respectively;
Transmitter module; Be used to obtain the network topological diagram of said a plurality of cooperative nodes; Confirm targeted customer's position according to said network topological diagram; For each cooperative node in said a plurality of cooperative nodes, from said beam vector group, select a beam vector of coupling the most according to said targeted customer's position, and the data of this cooperative node are carried out the weighting emission with the said beam vector of selecting.
13. device according to claim 12 is characterized in that, the said module that is provided with specifically comprises:
Submodule is set, is used for said each cooperative node is provided with a plurality of beam vector groups respectively;
Select module; Be used for character according to said cooperative node; From said a plurality of beam vector groups, select the beam vector group of a beam vector group as current cooperative node; Wherein, said character comprises one of following at least: whether network topology relation, the load information of cooperative node, cooperative node be multiplexing with other targeted customers.
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| CN106332180B (en) * | 2015-06-24 | 2020-09-04 | ***通信集团江苏有限公司 | Load balancing method and device |
| US10498504B2 (en) * | 2016-08-12 | 2019-12-03 | Futurewei Technologies, Inc. | System and method for user equipment operations management |
| CN108377538A (en) * | 2016-11-22 | 2018-08-07 | 中兴通讯股份有限公司 | A kind of method and device of distribution wave beam |
| CN109565865A (en) * | 2017-01-05 | 2019-04-02 | Oppo广东移动通信有限公司 | Communication means, terminal device and the network equipment |
| US20240056769A1 (en) * | 2022-08-15 | 2024-02-15 | The Boeing Company | System and method for coordinated beamforming among discrete communication devices |
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| CN101047415A (en) * | 2007-05-08 | 2007-10-03 | 电子科技大学 | Distribution multi-antenna communication method and system based on focus signal |
| CN101227242A (en) * | 2008-01-31 | 2008-07-23 | 西安交通大学 | Method for forming distributed aerial array beam based on channel correction |
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| CN101227242A (en) * | 2008-01-31 | 2008-07-23 | 西安交通大学 | Method for forming distributed aerial array beam based on channel correction |
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