CN101990220A

CN101990220A - Downlink multi-antenna and multi-base station cooperation method, base station and user equipment

Info

Publication number: CN101990220A
Application number: CN2009101625199A
Authority: CN
Inventors: 丁铭; 刘仁茂; 张应余; 梁永明; 黄磊
Original assignee: Sharp Corp
Current assignee: Sharp High Tech Research And Development (shanghai) Co Ltd
Priority date: 2009-07-31
Filing date: 2009-07-31
Publication date: 2011-03-23
Anticipated expiration: 2029-07-31
Also published as: CN101990220B

Abstract

The invention discloses a downlink multi-antenna and multi-base station cooperation method, a base station and user equipment. The method comprises the following steps that: a serving base station sends configuration information to each piece of user equipment in a multi-antenna and multi-base station cooperation working mode, wherein the configuration information comprises a cooperation base station set aiming at the user equipment and also can comprise a base station cooperation transmitting port aiming at the user equipment; and the base station cooperation transmitting port of the serving base station and/or a base station cooperation transmitting port of a cooperation base station is selected (semi-)statically or dynamically. Solution for combining the transmitting antennas can be adopted to solve the possibly caused problem of unbalanced antenna power. The invention has the advantages of high channel capacity and low signaling cost and is easy to implement.

Description

Descending multi-antenna multi-base station cooperative method, base station and subscriber equipment

Technical field

The present invention relates to multi-antenna multi-base station cooperation in the communication technical field, more specifically, relate to a kind of being applied in the downlink honeycomb system,, improve method and the relevant base station and the subscriber equipment of downlink transmission data rate by selecting the cooperation emission port of multi-antenna multi-base station.

Background technology

Many antennas (MIMO:Multiple In Multiple Out) Radio Transmission Technology is used to the space resources in the wireless transmission at transmitting terminal and many antennas of receiving terminal configuration, obtains spatial reuse gain and space diversity gain.Information theory studies show that, the capacity of mimo system is along with the minimum value linear growth of number of transmit antennas and reception antenna number.The schematic diagram of mimo system as shown in Figure 1, among Fig. 1, many antennas of transmitting terminal and receiving terminal constitute the multi-antenna wireless channels, comprise spatial information (si).In addition, OFDM (OFDM) technology has stronger anti-fading ability and higher frequency efficiency, is fit to the high speed data transfer in multi-path environment and the fading environment.With the MIMO-OFDM technology that MIMO technology and OFDM technology combine, become the core technology of next-generation mobile communications.

For example, 3GPP (3G (Third Generation) Moblie partner plan) tissue is the international organization in the moving communicating field, and she plays an important role in the standardization effort of 3G cellular telecommunication art.The 3GPP tissue designs EUTRA (universal mobile telecommunications system of evolution and continental rise radio insert) and EUTRAN (the universal mobile telecommunications system net of evolution and continental rise radio access network) since the second half year in 2004, and this project is also referred to as LTE (Long Term Evolution) project.The down link of LTE system adopts the MIMO-OFDM technology exactly.In April, 2008,3GPP is organized in the China Shenzhen meeting, begins to inquire into the standardization effort (being called as the LTE-A system at present) of 4G cellular communication system.At the meeting, the notion of a kind of by name " multi-antenna multi-base station cooperation " obtains extensive concern and support, and its core concept is to adopt a plurality of base stations to provide communication service for a user or a plurality of user simultaneously, thereby improves the message transmission rate of cell boundary users.

In some technical literatures,, mainly contain three kinds of methods at descending multi-antenna multi-base station cooperation:

(1) based on the method for virtual MIMO technology:, be considered as virtual single base station system, thereby obtain bigger spatial reuse and space diversity gain with more antennas with many antennas of many base stations.In addition, the mechanism that reuses single base station system helps to reduce the implementation complexity of multi-antenna multi-base station system.Referring to non-patent literature 1:3GPP, R1-082501, " Collaborative MIMO for LTE-A downlink ", Alcatel-Lucent (3GPP document, numbering: R1-082501, " the cooperation MIMO technology in the LTE-A downlink system ", Alcatel-Lucent company).The enforcement schematic diagram of this method as shown in Figure 2.

(2) method that independently operates based on single base station: the single base station that is equipped with many antennas is independently for subscriber equipment provides service, and subscriber equipment superposes the data of a plurality of single base stations then, obtains higher spatial reuse and space diversity gain.This method realizes simple, and signaling consumption is less.Referring to non-patent literature 2:3GPP, R1-082497, " Network MIMO Precoding ", TexasInstruments (3GPP document, numbering: R1-082497, " precoding of network MIMO system ", Texas Instruments company).The enforcement schematic diagram of this method as shown in Figure 3.

(3) method that the channel of many base stations is simply merged: from the angle of subscriber equipment, the cooperation base station constitutes a pseudo channel, and then applies mechanically single base station technology to the directly addition merging of channel matrix of subscriber equipment.Referring to non-patent literature 3:3GPP, R1-083546, " Per-cell precoding methods for downlink joint processing CoMP ", ETRI (3GPP document, numbering: R1-083530, " single sub-district method for precoding in the descending multinode cooperation emission ", Korea S electronic communication association).The enforcement schematic diagram of this method as shown in Figure 4.

(4) in conjunction with a day line options, the method that the channel of many base stations is simply merged: on the basis of method (3), this method is carried out a day line options to the cooperation base station earlier, then the channel matrix that arrives subscriber equipment through the cooperation base station after day line options, directly addition merges, constitute a pseudo channel, and then apply mechanically single base station technology.Referring to non-patent literature 4:3GPP, R1-092102, " MBSFN Precoding with Antenna Selection for DL CoMP ", ETRI (3GPP document, numbering: R1-083530, " MBSFN precoding in the descending multi-node collaboration and day line options ", Sharp Co., Ltd.).The enforcement schematic diagram of this method as shown in Figure 5.

To sum up, consider that based on the method (1) of virtual MIMO technology the MIMO of global optimum disposes its better performances, but complexity is too high, particularly when the number of antennas of single cooperation base station is big, the main aerial number of virtual MIMO system will rise at double, cause overhead too high and can't work.The method (2) that single base station independently operates is though reduced implementation complexity, and the base station cooperation degree reduces, and systematic function is relatively poor.Method (3) and method (4) simply merge the channel of cooperation base station, and its advantage is to realize that simply feedback overhead is few; Shortcoming is that performance is still relatively poor.The present invention is based on method (1), propose a kind of virtual MIMO scheme in conjunction with the emission port selection.

Summary of the invention

It is higher to the present invention is directed to the prior art complexity, or the not good shortcoming of performance, has proposed a kind of descending multi-antenna multi-base station cooperative method, base station and subscriber equipment.At first, serving BS is a user device configuration multi-antenna multi-base station cooperation work pattern, comprises the cooperation collection of base stations at least, also can while configurating base station cooperation emission port.Then, (partly) select the base station cooperation emission port statically or dynamically.For fear of the antenna power imbalance problem that may cause, the present invention proposes to adopt the solution of transmitting antenna merging.The present invention have realize simple and channel capacity bigger, the advantage that signaling consumption is less.

In specification of the present invention, term " serving BS ", " cooperation base station " and " cooperation collection of base stations " have been adopted.Just as known to persons of ordinary skill in the art, the base station that participates in the cooperation emission all is called as " cooperation base station ", and therefore, " serving BS " also is a kind of special " cooperation base station " obviously.In order clearly to distinguish, " cooperation base station " in this specification do not comprise " serving BS ", and " cooperation collection of base stations " do not comprise " serving BS " interior yet.

According to first scheme of the present invention, a kind of descending multi-antenna multi-base station cooperative method has been proposed, comprise the steps: that serving BS sends configuration information to each subscriber equipment that is in multi-antenna multi-base station cooperation work pattern, described configuration information comprises: at the cooperation collection of base stations of this subscriber equipment and at the base station cooperation emission port of this subscriber equipment; Subscriber equipment detects the channel status of the base station cooperation emission port that has disposed, and feeds back the channel condition information of the base station cooperation emission port that has disposed; Serving BS is the user equipment allocation resource according to the channel condition information that subscriber equipment fed back; And serving BS and cooperation base station send data-signal by relevant base station cooperation emission port separately to subscriber equipment jointly.

Preferably, serving BS adopts the allocation list of arranging in advance with subscriber equipment, the base station cooperation emission port of the base station cooperation emission port of configuration service base station and/or cooperation base station statically.

Preferably, serving BS is according to the initial channel state information feedback of subscriber equipment, the base station cooperation emission port of configuration service base station, semi-static ground and/or the base station cooperation emission port of cooperation base station.

Preferably, subscriber equipment only feeds back the channel condition information of the base station cooperation emission port that has disposed to serving BS, and serving BS is transmitted to corresponding cooperation base station respectively with the relevant information in the subscriber equipment feedback information; The perhaps subscriber equipment relevant information in the channel condition information of the base station cooperation emission port that serving BS and corresponding cooperation base station feedback have disposed respectively.

According to alternative plan of the present invention, a kind of descending multi-antenna multi-base station cooperative method has been proposed, comprise the steps: that serving BS sends configuration information to each subscriber equipment that is in multi-antenna multi-base station cooperation work pattern, described configuration information comprises: at the cooperation collection of base stations of this subscriber equipment; The channel status of subscriber equipment base stations detected emission port, Dynamic Selection base station cooperation emission port, and the information and the corresponding channel condition information of the base station cooperation emission port selected of feedback; Serving BS is the user equipment allocation resource according to the information and the corresponding channel condition information of the base station cooperation emission port that subscriber equipment fed back; And serving BS and cooperation base station send data-signal by relevant base station cooperation emission port separately to subscriber equipment jointly.

Preferably, subscriber equipment detects the channel status of the base station port of each base station in the cooperation collection of base stations, the base station cooperation emission port of Dynamic Selection cooperation base station; And the base station cooperation emission port of serving BS be by serving BS adopt with subscriber equipment in advance the allocation list of agreement dispose statically, or dispose according to the initial channel state information feedback of subscriber equipment by serving BS semi-staticly.

Preferably, subscriber equipment detects channel status, the base station cooperation emission port of Dynamic Selection serving BS and the base station cooperation emission port of cooperation base station of the base station port of each base station in serving BS and the cooperation collection of base stations.

Preferably, subscriber equipment only feeds back the information and the corresponding channel condition information of the base station cooperation emission port of selecting to serving BS, and serving BS is transmitted to corresponding cooperation base station respectively with the relevant information in the subscriber equipment feedback information; The perhaps information of the base station cooperation emission port selected to serving BS and corresponding cooperation base station feedback respectively of subscriber equipment and the relevant information in the corresponding channel condition information.

Preferably, the value of the base station cooperation emission port sum of the base station cooperation emission port of the base station cooperation emission port of serving BS and cooperation base station is 4,8,12 or 16.

Preferably, at the base station cooperation emission port of serving BS and/or the base station cooperation emission port of cooperation base station, the method that adopts transmitting antenna to merge is mapped to single base station cooperation emission port with many antennas.

According to third party's case of the present invention, a kind of base station has been proposed, comprise: the configuration information generating apparatus, each subscriber equipment that be used in the linchpin Serving cell, is in multi-antenna multi-base station cooperation work pattern generates configuration information, and described configuration information comprises: at the cooperation collection of base stations of this subscriber equipment and at the base station cooperation emission port of this subscriber equipment; Dispensing device is used for sending the configuration information that is generated by the configuration information generating apparatus to subscriber equipment; Receiving system is used to receive the channel condition information of the base station cooperation emission port that has disposed of subscriber equipment feedback; And resource allocation device, be used for the channel condition information that feeds back according to subscriber equipment, be the user equipment allocation resource, described dispensing device also is used for sending data-signal by relevant base station cooperation emission port to subscriber equipment.

Preferably, described configuration information generating apparatus adopts the allocation list of arranging in advance with subscriber equipment, disposes the base station cooperation emission port of described base station and/or the base station cooperation emission port of cooperation base station statically.

Preferably, described receiving system also is used to receive the initial channel state information feedback of subscriber equipment, and described configuration information generating apparatus disposes the base station cooperation emission port of described base station and/or the base station cooperation emission port of cooperation base station according to the initial channel state information feedback of subscriber equipment semi-staticly.

Preferably, described dispensing device also is used for the relevant information of the channel condition information of the base station cooperation emission port that has disposed of subscriber equipment feedback is transmitted to corresponding cooperation base station respectively.

According to cubic case of the present invention, a kind of base station has been proposed, comprise: the configuration information generating apparatus, each subscriber equipment that be used in the linchpin Serving cell, is in multi-antenna multi-base station cooperation work pattern generates configuration information, and described configuration information comprises: at the cooperation collection of base stations of this subscriber equipment; Dispensing device is used for sending the configuration information that is generated by the configuration information generating apparatus to subscriber equipment; Receiving system is used to receive that subscriber equipment is selected and the information and the corresponding channel condition information of the base station cooperation emission port of feedback; And resource allocation device, the information and the corresponding channel condition information that are used for the base station cooperation emission port that feeds back according to subscriber equipment, be the user equipment allocation resource, described dispensing device also is used for sending data-signal by relevant base station cooperation emission port to subscriber equipment.

Preferably, described configuration information generating apparatus adopts the allocation list of arranging in advance with subscriber equipment to dispose the base station cooperation emission port of described base station statically.

Preferably, described receiving system also is used to receive the initial channel state information feedback of subscriber equipment, and described configuration information generating apparatus disposes the base station cooperation emission port of described base station according to the initial channel state information feedback of subscriber equipment semi-staticly.

Preferably, described dispensing device also is used for subscriber equipment selected and the information of the base station cooperation emission port of feedback and the relevant information of corresponding channel condition information are transmitted to corresponding cooperation base station respectively.

Preferably, the value of the base station cooperation emission port sum of the base station cooperation emission port of the base station cooperation emission port of described base station and cooperation base station is 4,8,12 or 16.

Preferably, described base station also comprises: antenna-port mapping device, be used for base station cooperation emission port at described base station, and the method that adopts transmitting antenna to merge is mapped to single base station cooperation emission port with many antennas.

According to the 5th scheme of the present invention, a kind of subscriber equipment has been proposed, comprise: receiving system, be used for receiving configuration information from serving BS, described configuration information comprises: at the cooperation collection of base stations of this subscriber equipment and at the base station cooperation emission port of this subscriber equipment; The channel status checkout gear is used to detect the channel status of the base station cooperation emission port that has disposed; And dispensing device, be used to feed back the channel condition information of the base station cooperation emission port that has disposed, described receiving system also is used to receive the data-signal that serving BS and cooperation base station send to subscriber equipment by relevant base station cooperation emission port separately jointly.

Preferably, the base station cooperation emission port of the base station cooperation emission port of serving BS and/or cooperation base station is that serving BS adopts the allocation list of arranging in advance with subscriber equipment to dispose statically.

Preferably, described dispensing device also is used for sending to serving BS the initial channel state information feedback of subscriber equipment, and the base station cooperation emission port of the base station cooperation emission port of serving BS and/or cooperation base station to be serving BS dispose according to the initial channel state information feedback of subscriber equipment semi-staticly.

Preferably, described dispensing device only feeds back the channel condition information of the base station cooperation emission port that has disposed to serving BS; Perhaps described dispensing device is the relevant information in the channel condition information of the base station cooperation emission port that serving BS and corresponding cooperation base station feedback have disposed respectively.

According to the 6th scheme of the present invention, a kind of subscriber equipment has been proposed, comprising: receiving system, be used for receiving configuration information from serving BS, described configuration information comprises: at the cooperation collection of base stations of this subscriber equipment; The channel status checkout gear is used for the channel status of base stations detected emission port; The port choice device is used for the channel status according to detected base station port, Dynamic Selection base station cooperation emission port; And dispensing device, be used to feed back the information and the corresponding channel condition information of the base station cooperation emission port of selecting, described receiving system also is used to receive the data-signal that serving BS and cooperation base station send to subscriber equipment by relevant base station cooperation emission port separately jointly.

Preferably, described channel status checkout gear detects the channel status of the base station port of each base station in the cooperation collection of base stations, the base station cooperation emission port of described port choice device Dynamic Selection cooperation base station, and the base station cooperation emission port of serving BS is to adopt the allocation list of arranging in advance with subscriber equipment to dispose statically by serving BS.

Preferably, described channel status checkout gear detects the channel status of the base station port of each base station in the cooperation collection of base stations, the base station cooperation emission port of described port choice device Dynamic Selection cooperation base station, described dispensing device also is used for sending to serving BS the initial channel state information feedback of subscriber equipment, and the base station cooperation emission port of serving BS is to be disposed by the initial channel state information feedback of serving BS according to subscriber equipment semi-staticly.

Preferably, described channel status checkout gear detects the channel status of the base station port of each base station in serving BS and the cooperation collection of base stations, and the base station cooperation emission port of described port choice device Dynamic Selection serving BS and the base station cooperation emission port of cooperation base station.

Preferably, described dispensing device only feeds back the information and the corresponding channel condition information of the base station cooperation emission port of selecting to serving BS; The information of the base station cooperation emission port that perhaps described dispensing device is selected to serving BS and corresponding cooperation base station feedback respectively and the relevant information in the corresponding channel condition information.

According to embodiments of the invention, the present invention can may further comprise the steps:

Step 1: the subscriber equipment in the cooperation of serving BS configuration multi-antenna multi-base station, comprise the cooperation collection of base stations at least, also can while configurating base station cooperation emission port.

Preferably, serving BS adopts the allocation list of arranging in advance with subscriber equipment, the emission port of configurating base station cooperation statically.

Preferably, serving BS is according to the initial channel state information feedback of subscriber equipment, semi-static ground configurating base station cooperation emission port.

Preferably, serving BS is according to the initial channel state information feedback of subscriber equipment, the port of semi-static ground configuration service base station.

Step 2 branch one: subscriber equipment does not carry out Dynamic Selection base station cooperation emission port, so subscriber equipment detects the channel status of the base station cooperation emission port that has disposed, and feeds back the channel condition information of the base station cooperation emission port that has disposed.

Step 2 branch two: subscriber equipment carries out Dynamic Selection base station cooperation emission port, so subscriber equipment detects the channel status of base station port in the cooperation collection of base stations, the information and the corresponding channel condition information of the base station cooperation emission port that Dynamic Selection base station cooperation emission port, and feedback is then selected.

Preferably, subscriber equipment detects the channel status of the emission port of non-serving base stations in the cooperation collection of base stations, Dynamic Selection base station cooperation emission port then, and the information and the corresponding channel condition information of the base station cooperation emission port of selecting to the serving BS feedback.

Preferably, subscriber equipment detects the channel status of the emission port of all base stations in the cooperation collection of base stations, Dynamic Selection base station cooperation emission port then, and the information and the corresponding channel condition information of the base station cooperation emission port of selecting to the serving BS feedback.

Step 3: serving BS is the user equipment allocation resource, and the base station cooperation emission port sends signal to subscriber equipment.

Preferably, limit base station cooperation emission port sum and only get limited kind of possibility.

Preferably, the method that adopts transmitting antenna to merge is mapped to single emission port with many antennas.

Thus, descending multi-antenna multi-base station cooperative method and base station that the present invention proposes, have realize simple and channel capacity bigger, the advantage that signaling consumption is less.

Description of drawings

By below in conjunction with description of drawings the preferred embodiments of the present invention, will make above-mentioned and other purpose of the present invention, feature and advantage clearer, wherein:

Fig. 1 is the schematic diagram of mimo system;

Fig. 2 is the schematic diagram of 3 base station cooperation employing methods (1);

Fig. 3 is the schematic diagram of 3 base station cooperation employing methods (2);

Fig. 4 is the schematic diagram of 3 base station cooperation employing methods (3);

Fig. 5 is the schematic diagram of 3 base station cooperation employing methods (4);

Fig. 6 is the schematic diagram of multi cell cellular communication system;

Fig. 7 is the flow chart according to the descending multi-antenna multi-base station cooperative method of the embodiment of the invention;

Fig. 8 is the schematic diagram of configure user equipment in embodiment scene one example (a);

Fig. 9 is the schematic diagram of configure user equipment in embodiment scene one example (b);

Figure 10 is the schematic diagram of configure user equipment in embodiment scene one example (c);

Figure 11 is the schematic diagram of configure user equipment in embodiment scene two examples (a);

Figure 12 is the schematic diagram of configure user equipment in embodiment scene two examples (b);

Figure 13 is the schematic diagram of configure user equipment in embodiment scene two examples (c);

Figure 14 is the schematic diagram of configure user equipment in embodiment scene three examples (a);

Figure 15 is the schematic diagram of configure user equipment in embodiment scene three examples (b);

Figure 16 is the schematic diagram of configure user equipment in embodiment scene three examples (c);

Figure 17 is that subscriber equipment among the embodiment is to the schematic diagram of serving BS feeding back channel state information;

Figure 18 is the schematic diagram that emission port is selected in embodiment scene one example (c);

Figure 19 is that subscriber equipment among the embodiment is to the schematic diagram of serving BS feeding back channel state information;

Figure 20 is the schematic diagram that emission port is selected in embodiment scene one example (d);

Figure 21 is the schematic diagram that emission port is selected in embodiment scene two examples (c);

Figure 22 is the schematic diagram that emission port is selected in embodiment scene two examples (d);

Figure 23 is the schematic diagram that emission port is selected in embodiment scene three examples (c);

Figure 24 is the schematic diagram that emission port is selected in embodiment scene three examples (d);

Figure 25 is the schematic diagram of antenna merging method;

Figure 26 shows the schematic block diagram according to the serving BS 2600 of the embodiment of the invention; And

Figure 27 shows the schematic block diagram according to the subscriber equipment 2700 of the embodiment of the invention.

Embodiment

To a preferred embodiment of the present invention will be described in detail, having omitted in the description process is unnecessary details and function for the present invention with reference to the accompanying drawings, obscures to prevent that the understanding of the present invention from causing.

At length set forth performing step of the present invention for clear, provide some specific embodiments of the invention below, be applicable to descending LTE cellular communication system.Need to prove, the invention is not restricted to the application described in the embodiment, but applicable to other communication systems, such as LTE-A system from now on.

Fig. 6 shows the schematic diagram of a multi cell cellular communication system.Cellular system is divided into the wireless coverage area that joins, i.e. sub-district to service coverage area.In Fig. 6, the sub-district schematically is depicted as regular hexagon, and whole coverage is spliced by sub-district 100～104.Relevant respectively with sub-district 100～104 is base station 200～204.Each of base station 200～204 comprises a transmitter, a receiver at least, and this is known in the field.It is to be noted, described base station, its basic categories is the service node in the sub-district, it can be the stand-alone base station with scheduling of resource function, also can be the transmitting node that is subordinated to stand-alone base station, can also be via node (normally being provided with in order further to enlarge cell coverage area) etc.In Fig. 6, base station 200～204 schematically is depicted as a certain zone that is positioned at sub-district 100～104, and is equipped with omnidirectional antenna.But in the cell layout of cellular communication system, base station 200～204 also can be equipped with directional antenna, and the subregion of direction ground coverage cell 100～104 is arranged, and this subregion is commonly called the sector.Therefore, the diagram of the multi cell cellular communication system of Fig. 6 only is for illustrative purpose, and does not mean that the present invention needs above-mentioned restrictive specified conditions in the enforcement of cellular system.

In Fig. 6, base station 200～204 is connected with each other by X2 interface 300～304.In the LTE system, three node layer network configurations of base station, wireless network control unit and core net are simplified to the two-layer node structure.Wherein, the function of wireless network control unit is divided into the base station, and the base station is coordinated by the wireline interface of " X2 " by name with the base station and communicated by letter.

In Fig. 6, there is the air interface " A1 interface " 310～314 that is connected with each other between the base station 200～204.In the future communications system, may introduce the notion of via node, link to each other by wave point between via node; And the base station also can be regarded a kind of special via node as, therefore, from now on, can exist the wave point of " A1 " by name to coordinate and communicate by letter between the base station.

In Fig. 6, the upper layer entity 220 (can be gateway, also can be other network entities such as mobile management entity) that also shows a base station 200～204 links to each other with base station 200～204 by S1 interface 320～324.In the LTE system, coordinate by the wireline interface of " S1 " by name between upper layer entity and the base station and communicate by letter.

In Fig. 6, several subscriber equipmenies 400～430 are distributing in the sub-district 100～104.In the subscriber equipment 400～430 each all comprises transmitter, receiver and portable terminal control unit, and this is known in the present technique field.Subscriber equipment 400～430 is by inserting cellular communication system for the serving BS of service separately (in the base station 200～204 some).Should be understood that though 16 subscriber equipmenies that only schematically draw among Fig. 6, the number of the subscriber equipment in the actual conditions is quite huge.In this sense, Fig. 6 for subscriber equipment to describe also only be illustrative purpose.Subscriber equipment 400～430 is by being serving base station 200～204 access cellular communications networks separately, directly, certain subscriber equipment is called as the serving BS of this subscriber equipment for providing the base station of communication service, other base stations are called as the non-serving base stations of this subscriber equipment, non-serving base stations can be used as the cooperation base station of serving BS, provides communication service for subscriber equipment together.

When the explanation present embodiment, investigate subscriber equipment 416, be equipped with 2 reception antennas, make it work in descending multi-antenna multi-base station modality for co-operation, its serving BS is base station 202, the cooperation base station is base station 200 and 204.It is pointed out that in the present embodiment, high spot reviews subscriber equipment 416, this does not also mean that the present invention only is applicable to 1 subscriber equipment.In fact, the present invention is applicable to the situation of multi-user installation fully, such as, in Fig. 6, subscriber equipment 408,410,430 etc. can use method of the present invention.Certainly, implementing to choose serving BS in the scene is 1, and the cooperation base station is 2, does not mean that also the present invention needs such qualifications, and in fact, the quantity of serving BS and cooperation base station does not have particular determination.

In each instantiation of this specification, consider the concrete configuration of LTE system, with reference to the document of 3GPP tissue: TS 36.213V8.3.0, " Evolved Universal TerrestrialRadio Access (E-UTRA); Physical Layer Procedures " (physical layer procedure that the general continental rise radio of evolution inserts), wherein defined the MIMO transmission means of 7 kinds of downlink datas:

1. single-antenna transmission: using single antenna to transmit, is a special case of mimo system, and this mode can only be transmitted single layer data,

2. transmit diversity: in mimo system, utilize the time or/and the diversity of frequency transmits, to improve the quality of reception of signal, this mode can only be transmitted single layer data,

3. open loop space division multiplexing: do not need the space division multiplexing of subscriber equipment feedback space precoding information,

4. closed loop space division multiplexing: need the space division multiplexing of subscriber equipment feeding back channel state information,

5. multiuser MIMO: a plurality of users are simultaneously with the downlink communications that frequently participate in mimo system,

6. closed loop individual layer precoding: use mimo system, adopt precoding technique, only transmit single layer data,

7. beam shaping emission: use mimo system, beam forming technique is furnished with the data demodulates that special-purpose reference signal is used for subscriber equipment.

It is to be noted, when explanation is of the present invention, when the delivery plan of transmit diversity is taked in the serving BS of subscriber equipment and cooperation base station, described transmit diversity can be the combination and the expansion of various diversity techniques such as time diversity, frequency diversity, space diversity, phase place delay diversity, and the diversity preliminary treatment can centralized processing, also can distributed treatment.Also it is pointed out that the transmission means of the downlink data that adopts LTE system definition, only be giving an example of doing for concrete enforcement of the present invention is described, and do not mean that the present invention needs above-mentioned restrictive condition in implementation process.

When the explanation present embodiment, adopt following multi-antenna multi-base station collaboration scenario:

Embodiment scene one: investigate subscriber equipment 416, be equipped with 4 reception antennas, make it work in descending multi-antenna multi-base station modality for co-operation, its serving BS is base station 202, and the cooperation base station is base station 200 and 204.When the multi-antenna multi-base station cooperation sent, 8 emission ports were all used in base station 200,202,204.

Embodiment scene two: investigate subscriber equipment 416, be equipped with 4 reception antennas, make it work in descending multi-antenna multi-base station modality for co-operation, its serving BS is base station 202, and the cooperation base station is base station 200 and 204.When the multi-antenna multi-base station cooperation sent, 4 emission ports were all used in base station 200,202,204.

Embodiment scene three: investigate subscriber equipment 416, be equipped with 4 reception antennas, make it work in descending multi-antenna multi-base station modality for co-operation, its serving BS is base station 202, and the cooperation base station is base station 200 and 204.When the multi-antenna multi-base station cooperation sent, 4 emission ports were used in base station 202, and 8 emission ports are used in base station 200, and 4 emission ports are used in base station 204.

It is to be noted, the concrete numerical value that embodiment scene three used non-consistent emission ports dispose, just enforcement of the present invention for convenience of description and do for example, utilization of the present invention is not subjected to the restriction of these numerical value, is applicable to the situation of any emission port configuration fully.Will be understood that those skilled in the art can understand generally speaking by reading embodiments of the invention, in the emission port configuration scene, can adopt scheme proposed by the invention arbitrarily.

Fig. 7 shows the flow chart of the descending multi-antenna multi-base station cooperative method of the embodiment of the invention.

As shown in Figure 7, the method according to the embodiment of the invention may further comprise the steps:

Step 500: serving BS sends configuration information to each subscriber equipment that is in multi-antenna multi-base station cooperation work pattern, described configuration information comprises at least: at the cooperation collection of base stations of this subscriber equipment, described configuration information also can comprise: at the base station cooperation emission port of this subscriber equipment.

In the present embodiment, provide 12 applicating examples.

Embodiment scene one example (a): the serving BS of subscriber equipment 416 is base stations 202, and the cooperation base station is base station 200 and 204.Serving BS 202 configure user equipment 416, notifying its cooperation collection of base stations is base station 200,202,204.The emission port of configurating base station cooperation statically simultaneously is total up to 12, is respectively the emission port 0～5 of serving BS 202, the emission port 0～2 of base station 200 and the emission port 0～2 of base station 204.It implements schematic diagram as shown in Figure 8.Static configuration herein can be realized by the form that base station and subscriber equipment are arranged in advance, and is as shown in table 1:

Table 1: the form of static configuration base station cooperation emission port (3 base station cooperation)

Embodiment scene one example (b): the serving BS of subscriber equipment 416 is base stations 202, and the cooperation base station is base station 200 and 204.Serving BS 202 configure user equipment 416, notifying its cooperation collection of base stations is base station 200,202,204.In addition, serving BS 202 is according to the initial channel state information feedback of subscriber equipment, semi-static ground configurating base station cooperation emission port is total up to 12, be respectively the emission port 0,2,3,4,5,6,7 of serving BS 202, the emission port 0,1 of base station 200 and the emission port 2,4,7 of base station 204.Herein, so-called " semi-static " is meant that after this serving BS can also revise the configuration of base station cooperation emission port by signaling.It implements schematic diagram as shown in Figure 9.

Embodiment scene one example (c): the serving BS of subscriber equipment 416 is base stations 202, and the cooperation base station is base station 200 and 204.Serving BS 202 configure user equipment 416, notifying its cooperation collection of base stations is base station 200,202,204.In addition, serving BS 202 is according to the initial channel state information feedback of subscriber equipment, and the port of semi-static ground configuration service base station is total up to 6, is respectively the emission port 0,2,3,5,6,7 of serving BS 202.After this emission port of base station 200 and base station 204 is selected by subscriber equipment.Herein, so-called " semi-static " is meant that after this serving BS can also revise the configuration of base station cooperation emission port by signaling.It implements schematic diagram as shown in figure 10.

Embodiment scene one example (d): the serving BS of subscriber equipment 416 is base stations 202, and the cooperation base station is base station 200 and 204.Serving BS 202 configure user equipment 416, notifying its cooperation collection of base stations is base station 200,202,204.At this moment, the port that the serving BS cooperation is launched does not dispose, and after this, selects the base station cooperation emission port by subscriber equipment.

Embodiment scene two examples (a): the serving BS of subscriber equipment 416 is base stations 202, and the cooperation base station is base station 200 and 204.Serving BS 202 configure user equipment 416, notifying its cooperation collection of base stations is base station 200,202,204.The emission port of configurating base station cooperation statically simultaneously is total up to 8, is respectively the emission port 0～3 of serving BS 202, the emission port 0～1 of base station 200 and the emission port 0～1 of base station 204.It implements schematic diagram as shown in figure 11.Static configuration herein can be realized by the form that base station and subscriber equipment are arranged in advance, and is as shown in table 2:

Table 2: the form of static configuration base station cooperation emission port (3 base station cooperation)

Embodiment scene two examples (b): the serving BS of subscriber equipment 416 is base stations 202, and the cooperation base station is base station 200 and 204.Serving BS 202 configure user equipment 416, notifying its cooperation collection of base stations is base station 200,202,204.In addition, serving BS 202 is according to the initial channel state information feedback of subscriber equipment, semi-static ground configurating base station cooperation emission port is total up to 8, is respectively the emission port 0,2,3 of serving BS 202, the emission port 0,1,3 of base station 200 and the emission port 0,2 of base station 204.Herein, so-called " semi-static " is meant that after this serving BS can also revise the configuration of base station cooperation emission port by signaling.It implements schematic diagram as shown in figure 12.

Embodiment scene two examples (c): the serving BS of subscriber equipment 416 is base stations 202, and the cooperation base station is base station 200 and 204.Serving BS 202 configure user equipment 416, notifying its cooperation collection of base stations is base station 200,202,204.In addition, serving BS 202 is according to the initial channel state information feedback of subscriber equipment, and the port of semi-static ground configuration service base station is total up to 4, is respectively the emission port 0～3 of serving BS 202.After this emission port of base station 200 and base station 204 is selected by subscriber equipment.Herein, so-called " semi-static " is meant that after this serving BS can also revise the configuration of base station cooperation emission port by signaling.It implements schematic diagram as shown in figure 13.

Embodiment scene two examples (d): the serving BS of subscriber equipment 416 is base stations 202, and the cooperation base station is base station 200 and 204.Serving BS 202 configure user equipment 416, notifying its cooperation collection of base stations is base station 200,202,204.At this moment, the port that the serving BS cooperation is launched does not dispose, and after this, selects the base station cooperation emission port by subscriber equipment.

Embodiment scene three examples (a): the serving BS of subscriber equipment 416 is base stations 202, and the cooperation base station is base station 200 and 204.Serving BS 202 configure user equipment 416, notifying its cooperation collection of base stations is base station 200,202,204.The emission port of configurating base station cooperation statically simultaneously is total up to 8, is respectively the emission port 0～3 of serving BS 202, the emission port 0～1 of base station 200 and the emission port 0～1 of base station 204.It implements schematic diagram as shown in figure 14.Static configuration herein can be realized by the form that base station and subscriber equipment are arranged in advance, and is as shown in table 3:

Table 3: the form of static configuration base station cooperation emission port (3 base station cooperation)

Embodiment scene three examples (b): the serving BS of subscriber equipment 416 is base stations 202, and the cooperation base station is base station 200 and 204.Serving BS 202 configure user equipment 416, notifying its cooperation collection of base stations is base station 200,202,204.In addition, serving BS 202 is according to the initial channel state information feedback of subscriber equipment, semi-static ground configurating base station cooperation emission port is total up to 8, is respectively the emission port 0,2,3 of serving BS 202, the emission port 0,1,5,7 of base station 200 and the emission port 2 of base station 204.Herein, so-called " semi-static " is meant that after this serving BS can also revise the configuration of base station cooperation emission port by signaling.It implements schematic diagram as shown in figure 15.

Embodiment scene three examples (c): the serving BS of subscriber equipment 416 is base stations 202, and the cooperation base station is base station 200 and 204.Serving BS 202 configure user equipment 416, notifying its cooperation collection of base stations is base station 200,202,204.In addition, serving BS 202 is according to the initial channel state information feedback of subscriber equipment, and the port of semi-static ground configuration service base station is total up to 3, is respectively the emission port 1～3 of serving BS 202.After this emission port of base station 200 and base station 204 is selected by subscriber equipment.Herein, so-called " semi-static " is meant that after this serving BS can also revise the configuration of base station cooperation emission port by signaling.It implements schematic diagram as shown in figure 16.

Embodiment scene three examples (d): the serving BS of subscriber equipment 416 is base stations 202, and the cooperation base station is base station 200 and 204.Serving BS 202 configure user equipment 416, notifying its cooperation collection of base stations is base station 200,202,204.At this moment, the port that the serving BS cooperation is launched does not dispose, and after this, selects the base station cooperation emission port by subscriber equipment.

It is pointed out that herein only be the embodiment that the present invention is configured subscriber equipment for serving BS for example, and do not mean that the present invention is confined to form in the example for the configuration information of serving BS.

Step 510-〉515-〉520: subscriber equipment does not carry out Dynamic Selection base station cooperation emission port (step 510: "No"), so subscriber equipment detects the channel status (step 515) of the base station cooperation emission port that has disposed, and feed back the channel condition information (step 520) of the base station cooperation emission port that has disposed.

Preferably, subscriber equipment only detects the channel status of the base station cooperation emission port that has disposed, and feeds back the channel condition information of the base station cooperation emission port that has disposed to serving BS.

In the present embodiment, provide 6 applicating examples.

Embodiment scene one example (a): subscriber equipment 416 is according to 12 ports of the base station cooperation emission of serving BS static configuration, detect the emission port 0～5 of serving BS 202, the channel status of the emission port 0～2 of base station 200 and the emission port 0～2 of base station 204, and the channel condition information of the base station cooperation emission port that has disposed to serving BS 202 feedback.It implements schematic diagram as shown in figure 17, and the signal 700 among Figure 17 is described channel condition information.

Embodiment scene one example (b): subscriber equipment 416 is according to 12 ports of the base station cooperation emission of the semi-static configuration of serving BS, detect the emission port 0,2,3,4,5,6,7 of serving BS 202, the channel status of the emission port 0,1 of base station 200 and the emission port 2,4,7 of base station 204, and the channel condition information of the base station cooperation emission port that has disposed to serving BS 202 feedback.It implements schematic diagram as shown in figure 17, and the signal 700 among Figure 17 is described channel condition information.

Embodiment scene two examples (a): subscriber equipment 416 is according to 8 ports of the base station cooperation emission of serving BS static configuration, detect the emission port 0～3 of serving BS 202, the channel status of the emission port 0～1 of base station 200 and the emission port 0～1 of base station 204, and the channel condition information of the base station cooperation emission port that has disposed to serving BS 202 feedback.It implements schematic diagram as shown in figure 17, and the signal 700 among Figure 17 is described channel condition information.

Embodiment scene two examples (b): subscriber equipment 416 is according to 8 ports of the base station cooperation emission of the semi-static configuration of serving BS, detect the emission port 0,2,3 of serving BS 202, the channel status of the emission port 0,1,3 of base station 200 and the emission port 0,2 of base station 204, and the channel condition information of the base station cooperation emission port that has disposed to serving BS 202 feedback.It implements schematic diagram as shown in figure 17, and the signal 700 among Figure 17 is described channel condition information.

Embodiment scene three examples (a): subscriber equipment 416 is according to 8 ports of the base station cooperation emission of serving BS static configuration, detect the emission port 0～3 of serving BS 202, the channel status of the emission port 0～1 of base station 200 and the emission port 0～1 of base station 204, and the channel condition information of the base station cooperation emission port that has disposed to serving BS 202 feedback.It implements schematic diagram as shown in figure 17, and the signal 700 among Figure 17 is described channel condition information.

Embodiment scene three examples (b): subscriber equipment 416 is according to 8 ports of the base station cooperation emission of the semi-static configuration of serving BS, detect the emission port 0,2,3 of serving BS 202, the channel status of the emission port 0,1,5,7 of base station 200 and the emission port 2 of base station 204, and the channel condition information of the base station cooperation emission port that has disposed to serving BS 202 feedback.It implements schematic diagram as shown in figure 17, and the signal 700 among Figure 17 is described channel condition information.

It is pointed out that herein only be for the implementation process of the present invention when subscriber equipment does not carry out Dynamic Selection base station cooperation emission port is described for example, and do not mean that the present invention is confined to the form in the example.

Step 510-〉525-〉530: subscriber equipment carries out Dynamic Selection base station cooperation emission port (step 510: "Yes"), so subscriber equipment detects the channel status (step 525) of base station port in the cooperation collection of base stations, the information and the corresponding channel condition information (step 530) of the base station cooperation emission port that Dynamic Selection base station cooperation emission port, and feedback is then selected.

In the present embodiment, provide 6 applicating examples.

Embodiment scene one example (c): subscriber equipment 416 is according to the semi-static configuration of serving BS 202, with the emission port 0,2,3,5,6,7 of serving BS 202 as preceding 6 base station cooperation emission ports.Then, subscriber equipment 416 detects the channel status of the emission port of non-serving base stations 200 in the cooperation collection of base stations and 204, and other 6 the base station cooperation emission ports of Dynamic Selection are the emission port 0,1,6 of base station 200 and the emission port 2,4,7 of base station 204.It implements schematic diagram as shown in figure 18.Subsequently, subscriber equipment 416 feeds back the information (emission port 0,1,6 of base station 200 and the emission port 2,4,7 of base station 204) and the corresponding channel condition information of the base station cooperation emission port of selecting to serving BS 202.It implements schematic diagram as shown in figure 19, and the signal 710 among Figure 19 is described channel condition information.

Embodiment scene one example (d): subscriber equipment 416 detects all base stations in the cooperation collection of base stations, it is the channel status of the emission port of base station 200,202,204,12 base station cooperation emission ports of Dynamic Selection are, the emission port 0,2,3,4,5,6,7 of base station 202, the emission port 0,1 of base station 200 and the emission port 2,4,7 of base station 204.It implements schematic diagram as shown in figure 20.Subsequently, subscriber equipment 416 feeds back the information (emission port 0,2,3,4,5,6,7 of base station 202, the emission port 0,1 of base station 200 and the emission port 2,4,7 of base station 204) and the corresponding channel condition information of the base station cooperation emission port of selecting to serving BS 202.It implements schematic diagram as shown in figure 19, and the signal 710 among Figure 19 is described channel condition information.

Embodiment scene two examples (c): subscriber equipment 416 is according to the semi-static configuration of serving BS 202, with the emission port 0～3 of serving BS 202 as preceding 4 base station cooperation emission ports.Then, subscriber equipment 416 detects the channel status of the emission port of non-serving base stations 200 in the cooperation collection of base stations and 204, and other 4 the base station cooperation emission ports of Dynamic Selection are the emission port 0,3 of base station 200 and the emission port 0,2 of base station 204.It implements schematic diagram as shown in figure 21.Subsequently, subscriber equipment 416 feeds back the information (emission port 0,3 of base station 200 and the emission port 0,2 of base station 204) and the corresponding channel condition information of the base station cooperation emission port of selecting to serving BS 202.It implements schematic diagram as shown in figure 19, and the signal 710 among Figure 19 is described channel condition information.

Embodiment scene two examples (d): subscriber equipment 416 detects all base stations in the cooperation collection of base stations, it is the channel status of the emission port of base station 200,202,204,8 base station cooperation emission ports of Dynamic Selection are, the emission port 0,2,3 of base station 202, the emission port 0,1,3 of base station 200 and the emission port 0,2 of base station 204.It implements schematic diagram as shown in figure 22.Subsequently, subscriber equipment 416 feeds back the information (emission port 0,2,3 of base station 202, the emission port 0,1,3 of base station 200 and the emission port 0,2 of base station 204) and the corresponding channel condition information of the base station cooperation emission port of selecting to serving BS 202.It implements schematic diagram as shown in figure 19, and the signal 710 among Figure 19 is described channel condition information.

Embodiment scene three examples (c): subscriber equipment 416 is according to the semi-static configuration of serving BS 202, with the emission port 1～3 of serving BS 202 as preceding 3 base station cooperation emission ports.Then, subscriber equipment 416 detects the channel status of the emission port of non-serving base stations 200 in the cooperation collection of base stations and 204, and other 5 the base station cooperation emission ports of Dynamic Selection are the emission port 0,1,5,7 of base station 200 and the emission port 2 of base station 204.It implements schematic diagram as shown in figure 23.Subsequently, subscriber equipment 416 feeds back the information (emission port 0,1,5,7 of the base station 200 and emission port 2 of base station 204) and the corresponding channel condition information of the base station cooperation emission port of selecting to serving BS 202.It implements schematic diagram as shown in figure 19, and the signal 710 among Figure 19 is described channel condition information.

Embodiment scene three examples (d): subscriber equipment 416 detects all base stations in the cooperation collection of base stations, it is the channel status of the emission port of base station 200,202,204,8 base station cooperation emission ports of Dynamic Selection are, the emission port 0,2,3 of base station 202, the emission port 0,1,5,7 of base station 200 and the emission port 2 of base station 204.It implements schematic diagram as shown in figure 24.Subsequently, subscriber equipment 416 feeds back the information (emission port 0,2,3 of base station 202, the emission port 0,1,5,7 of base station 200 and the emission port 2 of base station 204) and the corresponding channel condition information of the base station cooperation emission port of selecting to serving BS 202.It implements schematic diagram as shown in figure 19, and the signal 710 among Figure 19 is described channel condition information.

It is pointed out that herein only be for the implementation process of the present invention when subscriber equipment carries out Dynamic Selection base station cooperation emission port is described for example, and do not mean that the present invention is confined to the form in the example.

Step 540: serving BS is the user equipment allocation resource, and sends data-signal by the base station cooperation emission port to subscriber equipment.

For the simplified system design, can limit base station cooperation emission port sum and only get limited kind of possibility.Such as, base station cooperation emission port sum has only 3 kinds of possibilities, 4 ports, 8 ports and 12 ports.Like this, during multi-antenna multi-base station cooperation emission, only need predefined 4 ports, 8 ports and 3 kinds of schemes of 12 ports to get final product.

It is pointed out that present embodiment to the cooperation launching technique of multi-antenna multi-base station system without any qualification, for example, can adopt in the transmission means of 7 kinds of downlink datas of LTE system any one or multiple.

Also it is pointed out that in addition for the total emission power that keeps the base station constant, on the emission port of choosing that the power of the unchecked emission port in base station need be added to.But this may cause the antenna transmission power overload of base station.This mainly is because in real system, the transmitting power of antenna can only change in limited range, on certain root antenna, will cause signal to cut problems such as flat distortion if superfluous power is added to.

In order to address this problem, the method that can adopt transmitting antenna to merge:, merge by the mode of launching weighting, thereby many antennas are mapped on the single emission port with many antennas of base station.Referring to non-patent literature 5:3GPP, R1-092427, " CSI-RS Design forVirtualized LTE Antenna in LTE-A System ", Fujitsu (3GPP document, numbering: R1-092427, " the antenna virtual map in the design of LTE-A system reference signal ", Fujitsu).The enforcement schematic diagram of this method as shown in figure 25.

In conjunction with the present invention, for the transmitting power of balancing antenna, can the predefined transmitting antenna merge into the mapping table of emission port, shown in table 4 (4 antenna base station) or table 5 (8 antenna base station):

Table 4: transmitting antenna is merged into the mapping table (4 antenna base station) of emission port

Table 5: transmitting antenna is merged into the mapping table (8 antenna base station) of emission port

Need to prove that when the transmitting antenna shown in employing table 4 or the table 5 was merged into the mapping table of emission port, the selection of emission port was conditional, promptly emission port must travel through all transmitting antennas, could guarantee the power-balance of transmitting antenna.Such as, when carrying out the emission port selection based on table 4, port 0 and port one, port 2 and port 3, port 4 and port 5 must be selected in pairs, just can make emission port travel through all transmitting antennas, thereby guarantee the power-balance of transmitting antenna.

Perhaps, in conjunction with the present invention, for the transmitting power of balancing antenna, also can the predefined transmitting antenna transmitting antenna of traversal to the merging mapping table of emission port, shown in table 6 (4 antenna base station) or table 7 (8 antenna base station):

Table 6: transmitting antenna is merged into the mapping table (4 antenna base station) of emission port

Table 7: transmitting antenna is merged into the mapping table (8 antenna base station) of emission port

Need to prove, when the transmitting antenna shown in employing table 6 or the table 7 is merged into the mapping table of emission port, the selection of emission port without limits, this be because emission port traveled through all transmitting antennas, guaranteed the power-balance of transmitting antenna.

Hardware is realized

Figure 26 shows the schematic block diagram of the serving BS 2600 (above-mentioned serving BS 202) according to the embodiment of the invention.

As shown in figure 26, serving BS 2600 according to the present invention comprises: configuration information generating apparatus 2610, each subscriber equipment that be used in the linchpin Serving cell, is in multi-antenna multi-base station cooperation work pattern generates configuration information, described configuration information comprises at least: at the cooperation collection of base stations of this subscriber equipment, described configuration information also can comprise: at the base station cooperation emission port of this subscriber equipment; Dispensing device 2620 is used for sending the configuration information that is generated by configuration information generating apparatus 2610 to subscriber equipment; Receiving system 2630, be used to receive the subscriber equipment feedack, wherein under configuration information comprises situation at the base station cooperation emission port of subscriber equipment, the channel condition information of the base station cooperation emission port that the subscriber equipment feedback has disposed, and under configuration information did not comprise situation at the base station cooperation emission port of subscriber equipment, subscriber equipment was selected and the information and the corresponding channel condition information of feedback base station cooperation emission port; And resource allocation device 2640, be used for being the user equipment allocation resource according to subscriber equipment institute feedack (channel condition information, or port information and channel condition information).Dispensing device 2620 also is used for sending data-signal by relevant base station cooperation emission port to subscriber equipment.

On the one hand, under configuration information comprises situation at the base station cooperation emission port of subscriber equipment, configuration information generating apparatus 2610 can adopt the allocation list of arranging in advance with subscriber equipment, the base station cooperation emission port of the base station cooperation emission port of configuration service base station 2600 and/or cooperation base station statically.Perhaps, receiving system 2630 can receive the initial channel state information feedback of subscriber equipment, and configuration information generating apparatus 2610 is according to the initial channel state information feedback of subscriber equipment, the base station cooperation emission port of configuration service base station, semi-static ground 2600 and/or the base station cooperation emission port of cooperation base station.

On the other hand, under configuration information did not comprise situation at the base station cooperation emission port of subscriber equipment, configuration information generating apparatus 2610 can adopt and the subscriber equipment allocation list base station cooperation emission port of configuration service base station 2600 statically of agreement in advance.Perhaps, receiving system 2630 can receive the initial channel state information feedback of subscriber equipment, and configuration information generating apparatus 2610 is according to the initial channel state information feedback of subscriber equipment, the base station cooperation emission port of configuration service base station, semi-static ground 2600.

According to the present invention, dispensing device 2620 also is used for the relevant information of subscriber equipment feedack is transmitted to corresponding cooperation base station respectively.

According to the present invention, preferably, the value of the base station cooperation emission port sum of the base station cooperation emission port of serving BS 2600 and the base station cooperation emission port of cooperation base station is 4,8,12 or 16.

As shown in figure 26, serving BS 2600 can also comprise: antenna-port mapping device 2650, be used for base station cooperation emission port at serving BS 2600, and the method that adopts transmitting antenna to merge is mapped to single base station cooperation emission port with many antennas.

Figure 27 shows the schematic block diagram of the subscriber equipment 2700 (above-mentioned subscriber equipment 416) according to the embodiment of the invention.

As shown in figure 27, subscriber equipment 2700 according to the present invention comprises: receiving system 2710, be used for receiving configuration information from serving BS 2600, described configuration information comprises: at the cooperation collection of base stations of this subscriber equipment 2700, described configuration information also can comprise: at the base station cooperation emission port of this subscriber equipment 2700; Channel status checkout gear 2720, be used under configuration information comprises at the situation of the base station cooperation emission port of subscriber equipment 2700 (not needing the port Dynamic Selection), detect the channel status of the base station cooperation emission port that has disposed, and under configuration information does not comprise situation at the base station cooperation emission port of subscriber equipment 2700, the channel status of base stations detected emission port; Under configuration information does not comprise at the situation of the base station cooperation emission port of subscriber equipment 2700 (needing the port Dynamic Selection), subscriber equipment 2700 also comprises: port choice device 2740, be used for channel status, Dynamic Selection base station cooperation emission port according to detected base station port; And, subscriber equipment 2700 also comprises: dispensing device 2730, be used to feed back the channel condition information (portless Dynamic Selection) of the base station cooperation emission port that has disposed, perhaps feed back the information and the corresponding channel condition information (port Dynamic Selection) of the base station cooperation emission port of selecting.Receiving system 2710 also is used to receive the data-signal that serving BS 2600 and cooperation base station send to subscriber equipment 2700 by relevant base station cooperation emission port separately jointly.

On the one hand, under configuration information comprises at the situation of the base station cooperation emission port of subscriber equipment 2700 (portless Dynamic Selection), the base station cooperation emission port of serving BS 2600 and/or the base station cooperation emission port of cooperation base station be serving BS 2600 adopt with subscriber equipment 2700 in advance the allocation lists of agreement dispose statically.Perhaps, dispensing device 2730 also is used for sending to serving BS 2600 the initial channel state information feedback of subscriber equipmenies 2700, and the base station cooperation emission port of the base station cooperation emission port of serving BS 2600 and/or cooperation base station to be serving BS 2600 dispose according to the initial channel state information feedback of subscriber equipment 2700 semi-staticly.

According to this on the one hand, dispensing device 2730 only feeds back the channel condition information of the base station cooperation emission port that has disposed to serving BS 2600.Perhaps, dispensing device 2730 relevant information in the channel condition information of the base station cooperation emission port that serving BS 2600 and corresponding cooperation base station feedback have disposed respectively.

On the other hand, under configuration information does not comprise at the situation of the base station cooperation emission port of subscriber equipment 2700 (ports having Dynamic Selection), channel status checkout gear 2720 detects the channel status of the base station port of each base station (cooperation base station) in the cooperation collection of base stations, the base station cooperation emission port of port choice device 2740 Dynamic Selection cooperation base stations.The base station cooperation emission port of serving BS 2600 is to adopt the allocation list of arranging in advance with subscriber equipment 2700 to dispose statically by serving BS 2600.Perhaps, dispensing device 2730 also is used for sending to serving BS 2600 the initial channel state information feedback of subscriber equipment 2700, and the base station cooperation emission port of serving BS 2600 is to be disposed by the initial channel state information feedback of serving BS 2600 according to subscriber equipment 2700 semi-staticly.

Again on the one hand, under configuration information does not comprise at the situation of the base station cooperation emission port of subscriber equipment 2700 (ports having Dynamic Selection), channel status checkout gear 2720 detects the channel status of the base station port of each base station (cooperation base station) in serving BS 2600 and the cooperation collection of base stations, and the base station cooperation emission port of port choice device 2740 Dynamic Selection serving BSs 2600 and the base station cooperation emission port of cooperation base station.

According on the other hand above-mentioned and more on the one hand, the information and the corresponding channel condition information of the base station cooperation emission port that dispensing device 2730 is only selected to serving BS 2600 feedbacks.Perhaps, the information of the base station cooperation emission port selected to serving BS 2600 and corresponding cooperation base station feedback respectively of dispensing device 2730 and the relevant information in the corresponding channel condition information.

Should be noted in the discussion above that in above description,, show technical scheme of the present invention, but be not intended that the invention be limited to above-mentioned steps and cellular construction only in the mode of example.Under possible situation, can adjust and accept or reject step and cellular construction as required.Therefore, some step and unit are not to implement the necessary element of overall invention thought of the present invention.Therefore, technical characterictic essential to the invention only is subject to the minimum requirements that can realize overall invention thought of the present invention, and is not subjected to the restriction of above instantiation.

So far invention has been described in conjunction with the preferred embodiments.Should be appreciated that those skilled in the art can carry out various other change, replacement and interpolations under the situation that does not break away from the spirit and scope of the present invention.Therefore, scope of the present invention is not limited to above-mentioned specific embodiment, and should be limited by claims.

Claims

1. a descending multi-antenna multi-base station cooperative method comprises the steps:

Serving BS sends configuration information to each subscriber equipment that is in multi-antenna multi-base station cooperation work pattern, and described configuration information comprises: at the cooperation collection of base stations of this subscriber equipment and at the base station cooperation emission port of this subscriber equipment;

Subscriber equipment detects the channel status of the base station cooperation emission port that has disposed, and feeds back the channel condition information of the base station cooperation emission port that has disposed;

Serving BS is the user equipment allocation resource according to the channel condition information that subscriber equipment fed back; And

Serving BS and cooperation base station send data-signal by relevant base station cooperation emission port separately to subscriber equipment jointly.

2. descending multi-antenna multi-base station cooperative method according to claim 1 is characterized in that:

Serving BS adopts the allocation list of arranging in advance with subscriber equipment, the base station cooperation emission port of the base station cooperation emission port of configuration service base station and/or cooperation base station statically.

3. descending multi-antenna multi-base station cooperative method according to claim 1 is characterized in that:

Serving BS is according to the initial channel state information feedback of subscriber equipment, the base station cooperation emission port of configuration service base station, semi-static ground and/or the base station cooperation emission port of cooperation base station.

4. according to the described descending multi-antenna multi-base station cooperative method of one of claim 1～3, it is characterized in that:

Subscriber equipment only feeds back the channel condition information of the base station cooperation emission port that has disposed to serving BS, and serving BS is transmitted to corresponding cooperation base station respectively with the relevant information in the subscriber equipment feedback information; Perhaps

Subscriber equipment is the relevant information in the channel condition information of the base station cooperation emission port that serving BS and corresponding cooperation base station feedback have disposed respectively.

5. a descending multi-antenna multi-base station cooperative method comprises the steps:

Serving BS sends configuration information to each subscriber equipment that is in multi-antenna multi-base station cooperation work pattern, and described configuration information comprises: at the cooperation collection of base stations of this subscriber equipment;

The channel status of subscriber equipment base stations detected emission port, Dynamic Selection base station cooperation emission port, and the information and the corresponding channel condition information of the base station cooperation emission port selected of feedback;

Serving BS is the user equipment allocation resource according to the information and the corresponding channel condition information of the base station cooperation emission port that subscriber equipment fed back; And

6. descending multi-antenna multi-base station cooperative method according to claim 5 is characterized in that:

Subscriber equipment detects the channel status of the base station port of each base station in the cooperation collection of base stations, the base station cooperation emission port of Dynamic Selection cooperation base station; And

The base station cooperation emission port of serving BS be by serving BS adopt with subscriber equipment in advance the allocation list of agreement dispose statically, or dispose according to the initial channel state information feedback of subscriber equipment by serving BS semi-staticly.

7. descending multi-antenna multi-base station cooperative method according to claim 5 is characterized in that:

Subscriber equipment detects channel status, the base station cooperation emission port of Dynamic Selection serving BS and the base station cooperation emission port of cooperation base station of the base station port of each base station in serving BS and the cooperation collection of base stations.

8. according to the described descending multi-antenna multi-base station cooperative method of one of claim 5～7, it is characterized in that:

Subscriber equipment only feeds back the information and the corresponding channel condition information of the base station cooperation emission port of selecting to serving BS, and serving BS is transmitted to corresponding cooperation base station respectively with the relevant information in the subscriber equipment feedback information; Perhaps

The information of the base station cooperation emission port that subscriber equipment is selected to serving BS and corresponding cooperation base station feedback respectively and the relevant information in the corresponding channel condition information.

9. descending according to claim 1 or 5 multi-antenna multi-base station cooperative method is characterized in that:

The value of the base station cooperation emission port sum of the base station cooperation emission port of serving BS and the base station cooperation emission port of cooperation base station is 4,8,12 or 16.

10. descending according to claim 1 or 5 multi-antenna multi-base station cooperative method is characterized in that:

At the base station cooperation emission port of serving BS and/or the base station cooperation emission port of cooperation base station, the method that adopts transmitting antenna to merge is mapped to single base station cooperation emission port with many antennas.

11. a base station comprises:

The configuration information generating apparatus, each subscriber equipment that be used in the linchpin Serving cell, is in multi-antenna multi-base station cooperation work pattern generates configuration information, and described configuration information comprises: at the cooperation collection of base stations of this subscriber equipment and at the base station cooperation emission port of this subscriber equipment;

Dispensing device is used for sending the configuration information that is generated by the configuration information generating apparatus to subscriber equipment;

Receiving system is used to receive the channel condition information of the base station cooperation emission port that has disposed of subscriber equipment feedback; And

Resource allocation device is used for the channel condition information that feeds back according to subscriber equipment, is the user equipment allocation resource,

Described dispensing device also is used for sending data-signal by relevant base station cooperation emission port to subscriber equipment.

12. base station according to claim 11 is characterized in that:

Described configuration information generating apparatus adopts the allocation list of arranging in advance with subscriber equipment, disposes the base station cooperation emission port of described base station and/or the base station cooperation emission port of cooperation base station statically.

13. base station according to claim 11 is characterized in that:

Described receiving system also is used to receive the initial channel state information feedback of subscriber equipment, and

Described configuration information generating apparatus disposes the base station cooperation emission port of described base station and/or the base station cooperation emission port of cooperation base station according to the initial channel state information feedback of subscriber equipment semi-staticly.

14., it is characterized in that according to the described base station of one of claim 11～13:

Described dispensing device also is used for the relevant information of the channel condition information of the base station cooperation emission port that has disposed of subscriber equipment feedback is transmitted to corresponding cooperation base station respectively.

15. a base station comprises:

The configuration information generating apparatus, each subscriber equipment that be used in the linchpin Serving cell, is in multi-antenna multi-base station cooperation work pattern generates configuration information, and described configuration information comprises: at the cooperation collection of base stations of this subscriber equipment;

Receiving system is used to receive that subscriber equipment is selected and the information and the corresponding channel condition information of the base station cooperation emission port of feedback; And

Resource allocation device is used for the information and the corresponding channel condition information of the base station cooperation emission port that feeds back according to subscriber equipment, is the user equipment allocation resource,

16. base station according to claim 15 is characterized in that:

Described configuration information generating apparatus adopts the allocation list of arranging in advance with subscriber equipment to dispose the base station cooperation emission port of described base station statically.

17. base station according to claim 15 is characterized in that:

Described configuration information generating apparatus disposes the base station cooperation emission port of described base station according to the initial channel state information feedback of subscriber equipment semi-staticly.

18., it is characterized in that according to the described base station of one of claim 15～17:

Described dispensing device also is used for the information of the base station cooperation emission port of subscriber equipment selection and feedback and the relevant information of corresponding channel condition information are transmitted to corresponding cooperation base station respectively.

19., it is characterized in that according to claim 11 or 15 described base stations:

The value of the base station cooperation emission port sum of the base station cooperation emission port of described base station and the base station cooperation emission port of cooperation base station is 4,8,12 or 16.

20., also comprise according to claim 11 or 15 described base stations:

Antenna-port mapping device is used for the base station cooperation emission port at described base station, and the method that adopts transmitting antenna to merge is mapped to single base station cooperation emission port with many antennas.

21. a subscriber equipment comprises:

Receiving system is used for receiving configuration information from serving BS, and described configuration information comprises: at the cooperation collection of base stations of this subscriber equipment and at the base station cooperation emission port of this subscriber equipment;

The channel status checkout gear is used to detect the channel status of the base station cooperation emission port that has disposed; And

Dispensing device is used to feed back the channel condition information of the base station cooperation emission port that has disposed,

Described receiving system also is used to receive the data-signal that serving BS and cooperation base station send to subscriber equipment by relevant base station cooperation emission port separately jointly.

22. subscriber equipment according to claim 21 is characterized in that:

The base station cooperation emission port of serving BS and/or the base station cooperation emission port of cooperation base station are that serving BS adopts the allocation list of arranging in advance with subscriber equipment to dispose statically.

23. subscriber equipment according to claim 21 is characterized in that:

Described dispensing device also is used for sending to serving BS the initial channel state information feedback of subscriber equipment, and

To be serving BS dispose according to the initial channel state information feedback of subscriber equipment semi-staticly for the base station cooperation emission port of serving BS and/or the base station cooperation emission port of cooperation base station.

24., it is characterized in that according to the described subscriber equipment of one of claim 21～23:

Described dispensing device only feeds back the channel condition information of the base station cooperation emission port that has disposed to serving BS; Perhaps

Described dispensing device is the relevant information in the channel condition information of the base station cooperation emission port that serving BS and corresponding cooperation base station feedback have disposed respectively.

25. a subscriber equipment comprises:

Receiving system is used for receiving configuration information from serving BS, and described configuration information comprises: at the cooperation collection of base stations of this subscriber equipment;

The channel status checkout gear is used for the channel status of base stations detected emission port;

The port choice device is used for the channel status according to detected base station port, Dynamic Selection base station cooperation emission port; And

Dispensing device is used to feed back the information and the corresponding channel condition information of the base station cooperation emission port of selecting,

26. subscriber equipment according to claim 25 is characterized in that:

Described channel status checkout gear detects the channel status of the base station port of each base station in the cooperation collection of base stations,

The base station cooperation emission port of described port choice device Dynamic Selection cooperation base station, and

The base station cooperation emission port of serving BS is to adopt the allocation list of arranging in advance with subscriber equipment to dispose statically by serving BS.

27. subscriber equipment according to claim 25 is characterized in that:

The base station cooperation emission port of described port choice device Dynamic Selection cooperation base station,

The base station cooperation emission port of serving BS is to be disposed by the initial channel state information feedback of serving BS according to subscriber equipment semi-staticly.

28. subscriber equipment according to claim 25 is characterized in that:

Described channel status checkout gear detects the channel status of the base station port of each base station in serving BS and the cooperation collection of base stations, and

The base station cooperation emission port of described port choice device Dynamic Selection serving BS and the base station cooperation emission port of cooperation base station.

29., it is characterized in that according to the described subscriber equipment of one of claim 25～28:

Described dispensing device only feeds back the information and the corresponding channel condition information of the base station cooperation emission port of selecting to serving BS; Perhaps

The information of the base station cooperation emission port that described dispensing device is selected to serving BS and corresponding cooperation base station feedback respectively and the relevant information in the corresponding channel condition information.