CN105634574A

CN105634574A - Pilot signal transmission method, base station and user equipment

Info

Publication number: CN105634574A
Application number: CN201610118682.5A
Authority: CN
Inventors: 杨晶; 张劲林
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-06-08
Filing date: 2013-06-08
Publication date: 2016-06-01
Anticipated expiration: 2033-06-08
Also published as: CN105634574B

Abstract

An embodiment of the invention provides a pilot signal transmission method, a base station and user equipment. The method comprises the steps of determining m wave beams and p ports corresponding to the m wave beams, both m and p being positive integers larger than 1; and sending n pilot signals to user equipment UE through q groups of the ports, the q groups being obtained by dividing the p ports into groups each containing n ports, and both n and q being positive integers larger than 1. The i-th port of each group is used for sending the i-th pilot signal of the n pilot signals, 1<=i<=n, i being a positive integer. According to the embodiment of the invention, the p ports corresponding to the m wave beams are divided into q groups, and the n pilot signals are sent to the user equipment through the q groups of ports in a manner that the i-th port of each group is used for sending the i-th pilot signal of the n pilot signals, so that the number of sent pilot signals is reduced, and expenditure of the pilot signals can be saved.

Description

The transmission method of pilot signal, base station and user equipment

The application is, point case application of the application for a patent for invention that application number is 201380000695.7, the applying date, to be June 8, denomination of invention in 2013 be " method of transmission pilot signal, base station and user equipment ".

Technical field

The present invention relates to the communications field, and specifically, it relates to the method for transmission pilot signal, base station and user equipment.

Background technology

Theoretical analysis shows, number of antennas increases, channel capacity also can increase thereupon, increase sending end number of antennas simultaneously and also can obtain better wave beam forming effect, so adopting the Radio Transmission Technology that more multiple antennas sends and receives, i.e. multiple-input and multiple-output (Multiple-InputandMultiple-Output, MIMO) technology is one of the mainstream technology of moving communicating field research always.

Reference signal is also exactly pilot signal, is be supplied to receiving end by sending end, is used for a kind of known signal of channel estimating or channel measurement by receiving end. The basic thought of current pilot signal design is the corresponding pilot signal of each port, for this kind mapping mode one to one, is exactly that each antenna omnidirectional launches a pilot signal.

In MIMO technology, due to increasing of number of antennas, port number also can increase thereupon, if according to existing pilot signal design mode, is the pilot signal of each port assignment independence, and so the expense of pilot signal will be very big.

Summary of the invention

The embodiment of the present invention provides the method, base station and the user equipment that transmit pilot signal, it is possible to save the expense of pilot signal.

First aspect, it provides a kind of method transmitting pilot signal, comprising: determine m wave beam, and determine p port corresponding to described m wave beam, wherein m and p is the positive integer being greater than 1; By the port of q group, sending n pilot signal to user equipment (UE), wherein, described p port is comprised n port according to each group and carries out dividing acquisition by described q group, n and q is the positive integer being greater than 1; I-th pilot signal of i-th port in described each group for sending in described n pilot signal, 1��i��n, i is positive integer.

In conjunction with first aspect, in the implementation that the first is possible, also comprise: according to the sensing of described m wave beam, described p port is divided into q group.

In conjunction with the first possible implementation of first aspect or first aspect, in the 2nd kind of possible implementation, described determine m wave beam, comprising: the mode utilizing antenna weighting, form described m wave beam.

In conjunction with the 2nd kind of possible implementation of first aspect, in the implementation that the third is possible, the described mode utilizing antenna weighting, form described m wave beam, comprise: utilize m weighted value, respectively one group of same polarization antenna is carried out weighting, form described m wave beam.

In conjunction with the 2nd kind of possible implementation of first aspect, in the 4th kind of possible implementation, the described mode utilizing antenna weighting, form described m wave beam, comprise: utilize k weighted value, respectively one group of same polarization antenna carried out weighting, k be greater than 1 positive integer; Utilize the first weighted value, two adjacent wave beams any in described k wave beam are carried out weighting, forms m/2 wave beam; Utilize the 2nd weighted value, two adjacent wave beams any in described k wave beam are carried out weighting, forms m/2 wave beam.

In conjunction with the 2nd kind of possible implementation of first aspect, in the 5th kind of possible implementation, the described mode utilizing antenna weighting, form described m wave beam, comprise: utilize m/2 weighted value, respectively first group of same polarization antenna is carried out weighting, form m/2 wave beam; Utilize described m/2 weighted value, respectively the 2nd group of same polarization antenna is carried out weighting, form m/2 wave beam; Wherein, there is spacing between described first group of same polarization antenna and described 2nd group of same polarization antenna.

In conjunction with the first possible implementation of first aspect or first aspect to arbitrary implementation in the 5th kind of possible implementation, in the 6th kind of possible implementation, at the described port by described q group, before sending n pilot signal to UE, also comprise: the configuration of the x kind pilot signal corresponding to port determining described q group, wherein, each group in described q group is divided into x subgroup, each subgroup comprises y port, jth subgroup in each group is corresponding to the jth kind pilot signal configuration in the configuration of described x kind pilot signal, described pilot signal is configured for the running time-frequency resource that instruction pilot signal takies, x and y is the positive integer being more than or equal to 1, 1��j��x, j is positive integer, sending signaling to described UE, described signaling is used to indicate the configuration of described x kind pilot signal.

In conjunction with the 6th kind of possible implementation of first aspect, in the 7th kind of possible implementation, also comprising: receive measurement information from described UE, UE described in described measurement information configures x the measuring result measured on the running time-frequency resource indicated respectively and obtain in described x kind pilot signal; According to the uplink received power of described measurement information and the port of described q group, it is determined that the transfer wave beam of described UE; Utilize the transfer wave beam of described UE, send data to described UE.

In conjunction with the 7th kind of possible implementation of first aspect, in the 8th kind of possible implementation, described according to the uplink received power of described measurement information and the port of described q group, determine the transfer wave beam of described UE, comprise: from described x measuring result, select optimum measuring result, and candidate's subgroup that the measuring result determining described optimum is corresponding, described candidate's subgroup comprises at least one subgroup; The uplink received power of the port according to described q group, the subgroup selecting uplink received power maximum from described candidate's subgroup; Measuring result according to described optimum and a subgroup of described selection, it is determined that the transfer wave beam of described UE.

In conjunction with the 7th kind of possible implementation or the 8th kind of possible implementation of first aspect, in the 9th kind of possible implementation, each measuring result in described x measuring result comprises channel quality indicator (CQI); Or, each measuring result described comprises described CQI, and following at least one: order, pre-coding matrix instruction PMI.

In conjunction with the first possible implementation of first aspect or first aspect to arbitrary implementation in the 9th kind of possible implementation, in the tenth kind of possible implementation, described pilot signal is channel state information reference signals CSI-RS.

Second aspect, provide a kind of method transmitting pilot signal, comprise: receive n the pilot signal that base station is sent by the port of q group, wherein, to be described base station comprise n port by p port corresponding to m wave beam according to each group to described q group carries out dividing and obtain, m and p is the positive integer being greater than 1, n and q is the positive integer being greater than 1; I-th pilot signal of i-th port in described each group for sending in described n pilot signal, 1��i��n, i is positive integer; Described n pilot signal is measured.

In conjunction with second aspect, in the implementation that the first is possible, before n the pilot signal that described reception base station is sent by the port of q group, also comprise: receive the signaling that described base station sends, described signaling is used to indicate the configuration of the x kind pilot signal corresponding to port of described q group, wherein, each group in described q group is divided into x subgroup, each subgroup comprises y port, jth subgroup in each group is corresponding to the jth kind pilot signal configuration in the configuration of described x kind pilot signal, described pilot signal is configured for the running time-frequency resource that instruction pilot signal takies, x and y is the positive integer being more than or equal to 1, 1��j��x, j is positive integer.

In conjunction with the first possible implementation of second aspect, in the 2nd kind of possible implementation, described described n pilot signal is measured, comprise: on the running time-frequency resource that the configuration of described x kind pilot signal indicates respectively, described n pilot signal is measured, obtain x measuring result;

Described method also comprises: send measurement information, x measuring result described in described measurement information to described base station.

In conjunction with the 2nd kind of possible implementation of second aspect, in the implementation that the third is possible, also comprise: by transfer wave beam, receiving the data that described base station sends, wherein said transfer wave beam is that described base station is determined according to the uplink received power of described measurement information and the port of described q group.

In conjunction with the 2nd kind of possible implementation or the third possible implementation of second aspect, in the 4th kind of possible implementation, each measuring result in described x measuring result comprises channel quality indicator (CQI); Or, each measuring result described comprises described CQI, and following at least one: order, pre-coding matrix instruction PMI.

In conjunction with the first possible implementation of second aspect or second aspect to arbitrary implementation in the 4th kind of possible implementation, in the 5th kind of possible implementation, described pilot signal is channel state information reference signals CSI-RS.

The third aspect, it provides a kind of base station, comprising: determining unit, for determining m wave beam, and determine p port corresponding to described m wave beam, and wherein m and p is the positive integer being greater than 1; Sending unit, for the port by q group, send n pilot signal to user equipment (UE), wherein, described p port is comprised n port according to each group and carries out dividing acquisition by described q group, n and q is the positive integer being greater than 1; I-th pilot signal of i-th port in described each group for sending in described n pilot signal, 1��i��n, i is positive integer.

In conjunction with the third aspect, in the implementation that the first is possible, also comprise: grouped element, for the sensing according to described m wave beam, described p port is divided into q group.

In conjunction with the first possible implementation of the third aspect or the third aspect, in the 2nd kind of possible implementation, described determining unit, specifically for utilizing the mode of antenna weighting, forms described m wave beam.

In conjunction with the 2nd kind of possible implementation of the third aspect, in the implementation that the third is possible, one group of same polarization antenna, specifically for utilizing m weighted value, is carried out weighting by described determining unit respectively, forms described m wave beam.

In conjunction with the 2nd kind of possible implementation of the third aspect, in the 4th kind of possible implementation, described determining unit utilizes k weighted value, respectively one group of same polarization antenna is carried out weighting, forms k wave beam, k be greater than 1 positive integer; Utilize the first weighted value, two adjacent wave beams any in described k wave beam are carried out weighting, forms m/2 wave beam; Utilize the 2nd weighted value, two adjacent wave beams any in described k wave beam are carried out weighting, forms m/2 wave beam.

In conjunction with the 2nd kind of possible implementation of the third aspect, in the 5th kind of possible implementation, first group of same polarization antenna, specifically for utilizing m/2 weighted value, is carried out weighting by described determining unit respectively, forms m/2 wave beam; Utilize described m/2 weighted value, respectively the 2nd group of same polarization antenna is carried out weighting, form m/2 wave beam; Wherein, there is spacing between described first group of same polarization antenna and described 2nd group of same polarization antenna.

In conjunction with the first possible implementation of the third aspect or the third aspect to the 5th kind of possible implementation, in the 6th kind of possible implementation, described determining unit, also for being sent before n pilot signal to UE by the port of q group at described transmission unit, determine the configuration of the x kind pilot signal corresponding to port of described q group, wherein, each group in described q group is divided into x subgroup, each subgroup comprises y port, jth subgroup in each group is corresponding to the jth kind pilot signal configuration in the configuration of described x kind pilot signal, described pilot signal is configured for the running time-frequency resource that instruction pilot signal takies, x and y is the positive integer being more than or equal to 1, 1��j��x, j is positive integer, described transmission unit, also for sending signaling to described UE, described signaling is used to indicate the configuration of described x kind pilot signal.

In conjunction with the 6th kind of possible implementation of the third aspect, in the 7th kind of possible implementation, also comprise reception unit; Described reception unit, for receiving measurement information from described UE, UE described in described measurement information configures x the measuring result measured on the running time-frequency resource indicated respectively and obtain in described x kind pilot signal; Described determining unit, also for the uplink received power of the measurement information that receives according to described reception unit and the port of described q group, it is determined that the transfer wave beam of described UE; Described transmission unit, also for utilizing the transfer wave beam of described UE, sends data to described UE.

In conjunction with the 7th kind of possible implementation of the third aspect, in the 8th kind of possible implementation, described determining unit specifically for: from described x measuring result, select optimum measuring result, and candidate's subgroup that the measuring result determining described optimum is corresponding, described candidate's subgroup comprises at least one subgroup; The uplink received power of the port according to described q group, the subgroup selecting uplink received power maximum from described candidate's subgroup; Measuring result according to described optimum and a subgroup of described selection, it is determined that the transfer wave beam of described UE.

Fourth aspect, provide a kind of user equipment, comprise: receive unit, for receiving n the pilot signal that base station is sent by the port of q group, wherein, to be described base station comprise n port by p port corresponding to m wave beam according to each group to described q group carries out dividing and obtain, m and p is the positive integer being greater than 1, n and q is the positive integer being greater than 1; I-th pilot signal of i-th port in described each group for sending in described n pilot signal, 1��i��n, i is positive integer; Measuring unit, for measuring described n the pilot signal that described reception unit receives.

In conjunction with fourth aspect, in the implementation that the first is possible, described reception unit, also for before receiving n the pilot signal that base station is sent by the port of q group, receive the signaling that described base station sends, described signaling is used to indicate the configuration of the x kind pilot signal corresponding to port of described q group, wherein, each group in described q group is divided into x subgroup, each subgroup comprises y port, jth subgroup in each group is corresponding to the jth kind pilot signal configuration in the configuration of described x kind pilot signal, described pilot signal is configured for the running time-frequency resource that instruction pilot signal takies, x and y is the positive integer being more than or equal to 1, 1��j��x, j is positive integer.

In conjunction with the first possible implementation of fourth aspect, in the 2nd kind of possible implementation, also comprise transmission unit; Described measuring unit, measures described n pilot signal on the running time-frequency resource indicated respectively specifically for configuring in described x kind pilot signal, obtains x measuring result; Described transmission unit, for sending measurement information, x measuring result described in described measurement information to described base station.

In conjunction with the 2nd kind of possible implementation of fourth aspect, in the implementation that the third is possible, described reception unit, also for by transfer wave beam, receiving the data that described base station sends, wherein said transfer wave beam is that described base station is determined according to the uplink received power of described measurement information and the port of described q group.

In the embodiment of the present invention, by p corresponding for m wave beam port is divided into q group, and send n pilot signal by the port of q group to UE, wherein i-th pilot signal of i-th port in each group for sending in n pilot signal, make the reduced number of the pilot signal sent such that it is able to save the expense of pilot signal.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, it is briefly described to the accompanying drawing used required in the embodiment of the present invention below, apparently, accompanying drawing described below is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the indicative flowchart of the method transmitting pilot signal according to an embodiment of the invention.

Fig. 2 is the schematic diagram of an example of the scene that can apply the embodiment of the present invention.

Fig. 3 is the schematic diagram of another example of the scene that can apply the embodiment of the present invention.

Fig. 4 is the schematic diagram of another example of the scene that can apply the embodiment of the present invention.

Fig. 5 is the indicative flowchart of the method transmitting pilot signal according to another embodiment of the present invention.

Fig. 6 is the schematic block diagram of base station according to an embodiment of the invention.

Fig. 7 is the schematic block diagram of UE according to an embodiment of the invention.

Fig. 8 is the schematic block diagram of base station according to another embodiment of the present invention.

Fig. 9 is the schematic block diagram of UE according to another embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of embodiment of the present invention, instead of whole embodiment. Based on the embodiment in the present invention, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all should belong to the scope of protection of the invention.

The technical scheme of the present invention, various communication system can be applied to, such as: global system for mobile communications (GlobalSystemofMobilecommunication, GSM), code division multple access (CodeDivisionMultipleAccess, CDMA) system, many location (the WidebandCodeDivisionMultipleAccessWireless of wideband code division, WCDMA), GPRS (GeneralPacketRadioService, GPRS), long-term evolution (LongTermEvolution, LTE) etc.

User equipment (UserEquipment, UE), also mobile terminal (MobileTerminal can be referred to as, MT), mobile subscriber equipment etc., can through wireless access net (such as, RadioAccessNetwork, RAN) communicate with one or more core net, user equipment can be mobile terminal, such as mobile telephone (or being called " honeycomb " phone) and the computer with mobile terminal, such as, it is possible to be formula portable, pocket, hand-held formula, built-in computer or vehicle-mounted running gear.

Base station, can be the base station (BaseTransceiverStation in GSM or CDMA, BTS), can also be the base station in WCDMA (NodeB), can also be the evolved base station (evolvedNodeB in LTE, eNB or e-NodeB), the present invention does not limit.

Fig. 1 is the indicative flowchart of the method transmitting pilot signal according to an embodiment of the invention. The method of Fig. 1 is performed by base station.

110, it is determined that m wave beam, and determine p port corresponding to m wave beam, wherein m and p is the positive integer being greater than 1.

Such as, base station can form m wave beam by the mode of weighting. M wave beam can have different sensings respectively. Such as, in active antenna system (ActiveAntennaSystem, AAS), base station can form m the different wave beam pointed to by antenna weighting mode.

Each wave beam can corresponding one or more port. Such as, when antenna is single polarization antenna, each wave beam can corresponding 1 port, so m wave beam can correspond to m port. When antenna is cross polarization antenna, each wave beam can corresponding 2 ports, so m wave beam can correspond to m �� 2 port.

120, by the port of q group, send n pilot signal to UE, wherein, p port is comprised n port according to each group and carries out dividing acquisition by q group, n and q is the positive integer being greater than 1; I-th pilot signal of i-th port in each group for sending in n pilot signal, 1��i��n, i is positive integer.

Such as, p port can be divided into groups by base station according to the sensing of m wave beam so that spatially staggers between each group. Such as, every n adjacent port can be divided into one group by base station. It will be understood that p port is divided into groups also to be substantially divided into groups by m wave beam by base station herein. For example, it is assumed that there are 16 wave beams, corresponding 2 ports of each wave beam, so 16 wave beams are corresponding to 32 ports. Every 8 adjacent ports can be divided into one group by base station, such that it is able to obtain 4 groups of ports. Also be exactly, due to each wave beam can corresponding 2 ports, it is therefore to be understood that every 4 adjacent wave beams are divided into one group for base station.

In each group of port, the 1st port is all for sending the 1st pilot signal; 2nd port, all for sending the 2nd pilot signal, is analogized with this.

From above-mentioned, if adopting existing pilot signal design mode, i.e. each port mapping pilot signal, so for p port, base station needs to send p pilot signal to UE. And in the embodiment of the present invention, base station can obtain q group port after being divided into groups by p port, wherein often organize port and comprise n port. N and q is the positive integer being greater than 1 herein, and therefore n is less than p. Then base station can send n pilot signal by q group port to UE, often organize i-th pilot signal of i-th port in port for sending in n pilot signal, make the reduced number of pilot signal, therefore the running time-frequency resource making pilot signal take reduces such that it is able to save the expense of pilot signal.

Can selection of land, as an embodiment, pilot signal can comprise channel state information reference signals (ChannelStateInformation-ReferenceSignal, CSI-RS).

Pilot signal can also comprise other only for the pilot signal of channel measurement. Owing to this kind of pilot signal is only for channel measurement, such as CSI-RS, therefore base station sends without the need to omnidirectional. And, due to Existential Space interval between m wave beam, therefore, base station can by the mode of spatial division multiplexing, to UE pilot signal transmitted.

Can selection of land, as an embodiment, before step 120, p port according to the sensing of m wave beam, can be divided into q group by base station.

Such as, p port can be divided into q group by base station so that the spaced interval between each group is enough far away. Spaced interval between each group can be determined according to actual demand, such as, can determine according to the expense of transmission performance and pilot signal.

Can selection of land, as another embodiment, in step 110, base station can utilize the mode of antenna weighting, forms m wave beam.

Can selection of land, as another embodiment, base station can utilize m weighted value respectively one group of same polarization antenna to be carried out weighting, forms m wave beam. Certain spacing is there is, such as 0.5 times of wavelength between this group same polarization antenna.

Can selection of land, as another embodiment, base station can utilize k weighted value, respectively one group of same polarization antenna is carried out weighting, forms k wave beam, k be greater than 1 positive integer. Base station can utilize the first weighted value, two adjacent wave beams any in k wave beam is carried out weighting, forms m/2 wave beam. Base station can utilize the 2nd weighted value, two adjacent wave beams any in k wave beam is carried out weighting, forms m/2 wave beam.

For example, it is assumed that base station utilizes the mode of antenna weighting, form 5 wave beams. Base station can utilize weighted value W1, two adjacent wave beams every in 5 wave beams is carried out weighting, forms 4 wave beams. Base station can utilize weighted value W2, two adjacent wave beams every in 5 wave beams is carried out weighting, forms other 4 wave beams. Like this, 8 wave beams just can be determined in base station.

Can selection of land, as another embodiment, base station can utilize m/2 weighted value, respectively first group of same polarization antenna is carried out weighting, forms m/2 wave beam. Base station can utilize m/2 above-mentioned weighted value, respectively the 2nd group of same polarization antenna is carried out weighting, forms m/2 wave beam. Wherein, there is spacing between first group of same polarization antenna and the 2nd group of same polarization antenna.

For example, it is assumed that m is 8, and it is assumed that there is 16 cross polarization antennas, each direction of polarization has 8 antennas. Wherein there is certain spacing between same polarization antenna, can be such as half-wavelength. The 8 of horizontal polarization directions antennas can be divided into two groups by base station: front 4 antennas are divided into one group, i.e. first group of same polarization antenna, rear 4 antennas are divided into one group, i.e. the 2nd group of same polarization antenna. So spacing between first group of same polarization antenna and the 2nd group of same polarization antenna is 2 times of wavelength. Like this, base station can utilize 4 weighted value W1, W2, W3 and W4 respectively to first group of same polarization antenna weighting, thus forms 4 wave beams. Base station to above-mentioned 4 weighted value W1, W2, W3 and W4 respectively to the 2nd group of same polarization antenna weighting, thus can form other 4 wave beams. Like this, 8 wave beams just can be determined in base station. Owing to the interval between first group of same polarization antenna and the 2nd group of same polarization antenna is 2 times of wavelength, the interval between 4 wave beams so formed by first group of same polarization antenna weighting and 4 wave beams formed by the 2nd group of same polarization antenna weighting is also 2 times of wavelength.

In the present embodiment, owing to there is spacing between first group of same polarization antenna and the 2nd group of same polarization antenna, therefore, it is possible to distinguished m/2 the wave beam formed by first group of same polarization antenna weighting and m/2 the wave beam formed by the 2nd group of same polarization antenna weighting by the spacing between antenna so that the embodiment of the present invention is applicable to the scene of more extensive antenna.

Can selection of land, as another embodiment, before step 120, the configuration of the x kind pilot signal corresponding to the port of q group can be determined in base station, wherein, in q group each group is divided into x subgroup, and each subgroup comprises y port, and jth the subgroup in each group is corresponding to the jth kind pilot signal configuration in the configuration of x kind pilot signal, pilot signal is configured for the running time-frequency resource that instruction pilot signal takies, x and y is the positive integer being more than or equal to 1, and 1��j��x, j is positive integer. Base station can send signaling to UE, and this signaling may be used for instruction x kind pilot signal configuration.

Specifically, each group in above-mentioned q group can also Further Division be x subgroup. Also it is exactly that n port in each group can be divided into x subgroup. Each subgroup includes y port. Owing to often group is divided into x subgroup, so base station can determine that q group port is corresponding to the configuration of x kind pilot signal. The wherein sum of the value of the x configuration that can be less than in agreement pilot signal.

Jth subgroup in each group can corresponding to the jth kind pilot signal configuration in the configuration of described x kind pilot signal. That is, in each group of port, the 1st subgroup is all corresponding to the 1st kind of pilot signal configuration; 2nd subgroup is all corresponding to the 2nd kind of pilot signal configuration; Analogize with this. Therefore, in each group of port, the port of different subgroup corresponds respectively to different pilot signal configurations, so that the pilot signal sent on the port of different subgroup takies different running time-frequency resources, is convenient to UE and pilot signal is measured.

For example, it is assumed that 16 wave beams are determined in base station in step 110, corresponding 2 ports of each wave beam. 32 ports can be divided into 4 groups by base station, and often group has 8 ports. Further, often organize 8 ports can be divided into 4 subgroups by base station. Each subgroup comprises 2 ports. 8 ports owing to often organizing are divided into 4 subgroups, and so base station can determine that 4 subgroup ports are corresponding to 4 kinds of pilot signal configurations. Wherein, in each group of port, the 1st subgroup is all corresponding to the 1st kind of pilot signal configuration, and the 2nd subgroup is all corresponding to the 2nd kind of pilot signal configuration, and the 3rd subgroup is all corresponding to the 3rd kind of pilot signal configuration, and the 4th subgroup is all corresponding to the 4th kind of pilot signal configuration.

Further, as another embodiment, after step 120, base station can receive measurement information from UE, and measurement information UE configures in x kind pilot signal on the running time-frequency resource indicated respectively and measures x the measuring result obtained. Base station can according to the uplink received power of the information of measurement and the port of q group, it is determined that the transfer wave beam of UE. Base station can utilize the transfer wave beam of UE, sends data to UE.

UE can on the running time-frequency resource indicated by the configuration of often kind of pilot signal measurement pilot signals, thus obtain x measuring result. Base station can based on these measuring results, it is determined that the transfer wave beam of UE.

Can selection of land, as another embodiment, optimum measuring result can be selected in base station from x measuring result, and determines the optimum candidate's subgroup corresponding to measuring result. Base station uplink received power can be selected maximum from q group one group. Base station can according to maximum one group of the measuring result of optimum, candidate's subgroup and described uplink received power, it is determined that the transfer wave beam of UE.

Can selection of land, as another embodiment, optimum measuring result can be selected in base station from x measuring result, and determines the optimum candidate's subgroup corresponding to measuring result, and this candidate's subgroup comprises at least one subgroup. Base station can according to the uplink received power of the port of q group, the subgroup selecting uplink received power maximum from candidate's subgroup. Base station can according to a subgroup of the measuring result of optimum and above-mentioned selection, it is determined that the transfer wave beam of UE.

Can selection of land, as another embodiment, each measuring result in x measuring result comprise channel quality instruction (ChannelQualityIndication, CQI).

Can selection of land, as another embodiment, each measuring result can comprise CQI, and comprises following at least one: order (rank), pre-coding matrix instruction (PrecodingMatrixIndicator, PMI). Such as, UE can according to transmission mode, it is determined whether comprise order or PMI in the measurement results.

Specifically, optimum measuring result can be selected in base station from x measuring result, and such as, the CQI in each measuring result can be compared by base station, it is determined that optimum CQI, so that it is determined that the measuring result of optimum. The configuration of the candidate pilot corresponding to optimum measuring result according to the measuring result of optimum, can be determined in base station in x kind pilot signal configures, such that it is able to determine the optimum candidate's subgroup corresponding to measuring result. Owing to the configuration of often kind of pilot signal can correspond to multiple subgroup, therefore candidate's subgroup herein can comprise multiple subgroup.

From the foregoing, multiple port can send identical pilot signal. Such as, the 1st port in each group port is all for sending the 1st pilot signal. Therefore, on the running time-frequency resource indicated by the configuration of a kind of pilot signal, the pilot signal measured by UE is substantially the signal that the pilot signal that multiple port sends is superimposed. Therefore, after the candidate's subgroup selecting optimum measuring result and correspondence, transfer wave beam also cannot be determined in base station. A group according to the uplink received power of each group of port in q group, can be selected in base station in q group. Such as, owing to above-mentioned p the port of base station receives uplink detection (sounding) reference signal, so the uplink received power of the port of each group in q group can be compared in base station, thus the group selecting uplink received power maximum in q group. Then, base station can wave beam corresponding to maximum one group of the measuring result of optimum, candidate's subgroup and above-mentioned uplink received power, it is determined that transfer wave beam. Such as, a subgroup of this maximum group of uplink received power can be determined to belong in candidate's subgroup in base station. Then base station can utilize the PMI in optimum measuring result that the wave beam corresponding to the above-mentioned subgroup determined is carried out weighting, so that it is determined that transfer wave beam. The subgroup that base station can also select uplink received power maximum from above-mentioned candidate's subgroup. Then base station can utilize the PMI in optimum measuring result that the wave beam corresponding to above-mentioned selection subgroup is carried out weighting, so that it is determined that transfer wave beam.

When the port of the above-mentioned subgroup determined is corresponding to multiple wave beam, utilize the PMI in optimum measuring result that multiple wave beams that this subgroup is corresponding are carried out weighting, and PMI is change, therefore, it is possible to form abundanter transfer wave beam.

Base station is after determining the transfer wave beam of UE, it is possible to use this transfer wave beam sends data to UE. UE can receive data by this transfer wave beam, it is possible to by user's DRS (Dedicated Reference Signal) (UE-specificReferenceSignal, UE-specificRS) demodulating data.

Below in conjunction with concrete example, the embodiment of the present invention is described in detail. It will be understood that these examples are just in order to help those skilled in the art to understand the embodiment of the present invention better, and the scope of the unrestricted embodiment of the present invention.

In fig. 2, it is assumed that have 32 cross polarization antennas, each direction of polarization has 16 antennas. Base station can utilize the mode of antenna weighting, forms 16 wave beams, and as shown in Figure 2, these 16 wave beams can represent for wave beam 0 to wave beam 15. Wherein, each wave beam is corresponding to 2 ports. Therefore, 16 wave beams are corresponding to 32 ports.

32 ports can be divided into 4 groups by base station, and every 8 adjacent ports are divided into one group. Also being exactly that 16 wave beams can be divided into 4 groups by base station, every 4 adjacent wave beams are one group. As shown in Figure 2, that is, these 4 groups can be expressed as group 0, group 1, group 2 and group 3.

In order to convenient description below, the port of each group can use identical numbering to represent. Specifically, as shown in Figure 2, in group 0, the port of wave beam 0 to wave beam 3 correspondence can be numbered 0 to 7. In group 1, the port of wave beam 4 to wave beam 7 correspondence can also be numbered 0 to 7. In group 2, the port of wave beam 8 to wave beam 11 correspondence can also be numbered 0 to 7. In group 3, the port of wave beam 12 to wave beam 15 correspondence can also be numbered 0 to 7.

Often organizing in port, each port may be used for sending different pilot signals. In each group of port, number identical port and may be used for sending identical pilot signal. Specifically, the port 0 in the port 0 in the port 0 in 0, group 1, the port 0 organized in 2 and group 3 is organized all for sending the 1st pilot signal; Port 1 in port 1 in group 0, the port 1 in group 1, group 2 and the port 1 in group 3 are all for sending the 2nd pilot signal; Analogize with this. Visible, base station can send 8 pilot signals by 4 groups of ports to UE.

Can selection of land, each group port can also divide further. Namely often group can also be divided into 4 subgroups, can comprise 2 ports in each subgroup. So 4 groups of ports just can be divided into 16 subgroups further. In order to convenient description below, in group 0 to, in group 3, subgroup can independently be numbered, namely each subgroup in different group can use identical numbering to represent. As shown in Figure 2,4 subgroups organized in 0 can be numbered 0 to 3, i.e. subgroup 0 to subgroup 3. 4 subgroups in group 1 can also be numbered subgroup 0 to subgroup 3. 4 subgroups in group 2 can also be numbered subgroup 0 to subgroup 3. 4 subgroups in group 3 can also be numbered subgroup 0 to subgroup 3. The subgroup being often numbered 0 in group can comprise the port being numbered 0 and 1 in this group, the subgroup being often numbered 1 in group can comprise the port being numbered 2 and 3 in this group, the subgroup being often numbered 2 in group can comprise the port being numbered 4 and 5 in this group, and the subgroup being often numbered 3 in group can comprise the port being numbered 6 and 7 in this group. Such as, in group 0, subgroup 0 can comprise the port 0 in group 0 and port 1, and subgroup 1 can comprise the port 2 in group 0 and port 3, and subgroup 2 can comprise the port 4 in group 0 and port 5, and subgroup 3 can comprise the port 6 and 7 in group 0. Other group is similar with group 0, repeats no more.

Often group is divided into 4 subgroups, and so 16 subgroups can corresponding to 4 kinds of pilot signal configurations. Pilot signal configuration can indicate the running time-frequency resource shared by pilot signal. Specifically, organizing the subgroup 0 in the subgroup 0 in the subgroup 0 in 0, group 1, the subgroup 0 organized in 2 and group 3 all can corresponding to the 1st kind of pilot signal configuration; Subgroup 1 in subgroup 1 in group 0, the subgroup 1 in group 1, group 2 and the subgroup 1 in group 3 all can corresponding to the 2nd kind of pilot signal configurations; Analogize with this.

UE can measure 8 pilot signals that base station sends on the running time-frequency resource that 4 kinds of pilot signal configurations indicate respectively. As shown in Figure 2, on the running time-frequency resource of often kind of pilot signal configuration instruction, UE can measure the pilot signal that base station sends on the port numbered in identical subgroup. Specifically, UE can measure the pilot signal being numbered on the port in the subgroup of 0 to send on the running time-frequency resource of the 1st kind of pilot signal configuration instruction. That is, UE can measure 2 pilot signals, 2 pilot signals that namely base station sends respectively on port 0 and port 1 on the running time-frequency resource of the 1st kind of pilot signal configuration instruction.

Similarly, UE can measure the pilot signal being numbered on the port in the subgroup of 1 to send on the running time-frequency resource of the 2nd kind of pilot signal configuration instruction. UE can measure the pilot signal being numbered on the port in the subgroup of 2 to send on the running time-frequency resource of the 3rd kind of pilot signal configuration instruction. UE can measure the pilot signal being numbered on the port in the subgroup of 3 to send on the running time-frequency resource of the 4th kind of pilot signal configuration instruction.

In fig. 2, UE can measure 2 pilot signals on the running time-frequency resource indicated by the configuration of often kind of pilot signal, and each pilot signal is substantially number on identical port the signal that the pilot signal sent is superimposed between each group. Such as, on the running time-frequency resource indicated by the 1st kind of pilot signal configuration, UE measures on 2 ports in subgroup 02 pilot signals sent, wherein 1 pilot signal is substantially be numbered the signal that the pilot signal sent on the port of 0 is superimposed in 4 groups of ports, and another 1 pilot signal is substantially be numbered the signal that the pilot signal sent on the port of 1 is superimposed in 4 groups of ports.

After UE measures respectively on the running time-frequency resource indicated by 4 kinds of pilot signal configurations, it is possible to obtain 4 measuring results. Each measuring result can comprise CQI. Each measuring result can also comprise following at least one: order, PMI.

Then, UE can send measurement information to base station, and measurement information can comprise this 4 measuring results.

Base station can according to measurement information, it is determined that transfer wave beam, and utilizes transfer wave beam to send data to UE. Specifically, optimum measuring result can be selected in base station from 4 measuring results, and 4 subgroups that the measuring result determining this optimum is corresponding. Then base station can according to group 0 to group 3 respective uplink received power, select uplink received power maximum from group 0 to group 3 one group. Such as, the measuring result of base station selected optimum measures to obtain on the running time-frequency resource indicated by the 1st kind of pilot signal configuration. 1st kind of pilot signal configuration can corresponding to 4 subgroups being numbered 0 in group 0 to group 3. Owing to 32 ports all can receive uplink detection reference signal, base station can comparative group 0 to group 3 respective uplink received power, so that it is determined that one group that uplink received power is maximum, can be such as that the uplink received power of the port of group 1 is maximum. So, base station is according to 4 subgroups and the group 1 that are numbered 0, so that it may to determine that wave beam 4 is as transfer wave beam. Then base station can utilize PMI that wave beam 4 is carried out weighting, so that it is determined that transfer wave beam.

In figure 3, it is assumed that have 16 cross polarization antennas, each direction of polarization has 8 antennas. Base station can utilize the mode of antenna weighting, forms 5 wave beams, and as shown in Figure 3, these 5 wave beams can represent for wave beam 00 to wave beam 04.

Base station can utilize weighted value W1, two adjacent wave beams every in 5 wave beams is carried out weighting, obtains 4 wave beams. Specifically, base station can utilize weighted value W1 that wave beam 00 and wave beam 01 are carried out weighting to obtain wave beam 10, utilize weighted value W1 that wave beam 01 and wave beam 02 are carried out weighting and obtain wave beam 12, analogize with this. So just can obtain 4 wave beams, be respectively wave beam 10,12,14 and 16.

Base station can utilize weighted value W2, two adjacent wave beams every in 5 wave beams is carried out weighting, obtains other 4 wave beams. Specifically, base station can utilize weighted value W2 that wave beam 00 and wave beam 01 are carried out weighting to obtain wave beam 11, utilize weighted value W2 that wave beam 01 and wave beam 02 are carried out weighting and obtain wave beam 13, analogize with this. So just can obtain other 4 wave beams, be respectively wave beam 11,13,15 and 17.

Wherein in wave beam 10 to wave beam 17, each wave beam is corresponding to 2 ports. Therefore 8 wave beams can correspond to 16 ports.

16 ports can be divided into 2 groups by base station, and every 8 adjacent ports are divided into one group. Also being exactly that 8 wave beams are divided into 2 groups by base station, often group has 4 wave beams. As shown in Figure 3, these 2 groups can be expressed as group 0 and group 1.

The embodiment being similar to Fig. 2, for convenience of description, the port of each group can use identical numbering to represent. Specifically, as shown in Figure 3, in group 0, the port of wave beam 10 to wave beam 13 correspondence can be numbered 0 to 7. In group 1, the port of wave beam 14 to wave beam 17 correspondence can also be numbered 0 to 7.

Often organizing in port, each port may be used for sending different pilot signals. Between each group, number identical port and may be used for sending identical pilot signal. Specifically, the port 0 in 0 is organized with the port 0 in group 1 all for sending the 1st pilot signal; Port 1 in group 0 and the port 1 in group 1 are all for sending the 2nd pilot signal; Analogize with this. Visible, base station can send 8 pilot signals by 2 groups of ports to UE.

Still the embodiment of Fig. 2 it is similar to. Each group port can also divide further. Namely often group can also be divided into 2 subgroups, can comprise 4 ports in each subgroup. So 2 groups of ports just can be divided into 4 subgroups further. In order to convenient description below, in group 0 and group 1, identical numbering between each subgroup, can be used to represent. As shown in Figure 3,2 subgroups organized in 0 can be numbered 0 and 1, i.e. subgroup 0 and subgroup 1. 2 subgroups in group 1 can also be numbered subgroup 0 and subgroup 1. The subgroup being often numbered 0 in group can comprise the port being numbered 0 to 3 in this group, and the subgroup being often numbered 1 in group can comprise the port being numbered 4 to 7 in this group. Such as, in group 0, subgroup 0 can comprise the port 0 in group 0, port 1, port 2 and port 3, and subgroup 1 can comprise the port 4 in group 0, port 5, port 6 and port 7. Group 1 is similar with group 0, repeats no more.

Often group is divided into 2 subgroups, and so 4 subgroups can corresponding to 2 kinds of pilot signal configurations. Pilot signal configuration can indicate the running time-frequency resource shared by pilot signal. Specifically, organizing the subgroup 0 in 0 all can corresponding to the 1st kind of pilot signal configuration with the subgroup 0 in group 1; Subgroup 1 in group 0 and the subgroup 1 in group 1 all can corresponding to the 2nd kind of pilot signal configurations.

To suitably omit the description of similar procedure in the embodiment with Fig. 2 below. UE can measure 8 pilot signals that base station sends on the running time-frequency resource that 2 kinds of pilot signal configurations indicate respectively, thus obtains 2 measuring results. Then can send measurement information to base station, measurement information can comprise this 2 measuring results.

Optimum measuring result can be selected from 2 measuring results in base station, and determines corresponding to measuring result 2 optimum subgroups. Then 1 respective uplink received power according to group 0 and can be organized, select uplink received power maximum from two groups one group in base station. A subgroup of that maximum group of uplink received power can be determined to belong in 2 subgroups that optimum measuring result is corresponding in base station. For example, it is assumed that the measuring result of optimum measures to obtain on the running time-frequency resource indicated by the 2nd kind of pilot signal configuration. 2nd kind of pilot signal configures corresponding to 2 subgroups being numbered 1. And the uplink received power organizing the port of 1 is maximum, so the transfer wave beam of candidate can be determined in base station, namely organizes 2 wave beams of subgroup 1 correspondence in 1, i.e. wave beam 16 and wave beam 17. Base station can utilize the PMI in optimum measuring result that wave beam 16 and wave beam 17 are carried out weighting, such that it is able to determine transfer wave beam. In the present embodiment, owing to PMI is change, so base station is also change based on the transfer wave beam that PMI weighting is formed, therefore, it is possible to form abundanter transfer wave beam.

In the diagram, it is assumed that have 16 cross polarization antennas, each direction of polarization having 8 antennas, as shown in Figure 4,16 antennas can be numbered 0 to 15 respectively. There is certain spacing between two adjacent same polarization antennas, can be such as half-wavelength, i.e. 0.5 ��, wherein �� can represent wavelength.

Same polarization antenna can be divided into 2 groups by base station, and first group of same polarization antenna can comprise antenna 0,2,4 and 6, and the 2nd group of same polarization antenna can comprise antenna 8,10,12 and 14. Base station can utilize 4 weighted values respectively to first group of same polarization antenna weighting, namely utilizes weighted value W1, W2, W3 and W4 respectively antenna 0,2,4 and 6 to be carried out weighting, thus forms 4 wave beams, is respectively wave beam A, B, C and D. Base station can utilize above-mentioned 4 weighted values to the 2nd group of same polarization antenna weighting respectively, namely utilizes weighted value W1, W2, W3 and W4 respectively antenna 8,10,12 and 14 to be carried out weighting, thus forms other 4 wave beams, is respectively wave beam E, F, G and H. Visible, owing to the spacing between first group of same polarization antenna and the 2nd group of same polarization antenna is 2 ��, so spacing between wave beam A to D and wave beam E to H is 2 ��.

At wave beam A to, in wave beam H, each wave beam is corresponding to 2 ports, and therefore 8 wave beams can correspond to 16 ports.

16 ports can be divided into 2 groups by base station, and these 2 groups are expressed as group 0 and group 1. Group 0 comprises 8 corresponding respectively ports of wave beam A, wave beam B, wave beam E and wave beam F, and group 1 comprises 8 corresponding respectively ports of wave beam C, wave beam D, wave beam G and wave beam H.

The embodiment being similar to Fig. 2 and Fig. 3, for convenience of description, the port of each group can use identical numbering to represent. Specifically, as shown in Figure 4, in group 0, the port that wave beam A is corresponding is numbered 0 and 1, and the port that wave beam E is corresponding can be numbered 2 and 3, and the port that wave beam B is corresponding can be numbered 4 and 5, and the port that wave beam F is corresponding can be numbered 6 and 7. In group 1, the port that wave beam C is corresponding can be numbered 0 and 1, and the port that wave beam G is corresponding can be numbered 2 and 3, and the port that wave beam D is corresponding can be numbered 4 and 5, and the port that wave beam H is corresponding can be numbered 6 and 7.

To suitably omit and the description of similar procedure in Fig. 2 and Fig. 3 below. Often organizing in port, each port may be used for sending different pilot signals. Between each group, number identical port and may be used for sending identical pilot signal. Therefore, base station can send 8 pilot signals by 2 groups of ports to UE.

Still the embodiment of Fig. 2 and Fig. 3 it is similar to. Each group port can also divide further. Namely often group can also be divided into 2 subgroups, can comprise 4 ports in each subgroup. So 2 groups of ports just can be divided into 4 subgroups further. In order to convenient description below, in group 0 and group 1, identical numbering between each subgroup, can be used to represent. As shown in Figure 4,2 subgroups organized in 0 can be numbered 0 and 1, i.e. subgroup 0 and subgroup 1. 2 subgroups in group 1 can also be numbered subgroup 0 and subgroup 1. The subgroup being often numbered 0 in group can comprise the port being numbered 0 to 3 in this group, and the subgroup being often numbered 1 in group can comprise the port being numbered 4 to 7 in this group. Such as, in group 0, subgroup 0 can comprise the port 0 in group 0, port 1, port 2 and port 3, and subgroup 1 can comprise the port 4 in group 0, port 5, port 6 and port 7. Group 1 is similar with group 0, repeats no more.

UE can measure 8 pilot signals that base station sends on the running time-frequency resource that 2 kinds of pilot signal configurations indicate respectively, thus obtains 2 measuring results. Then can send measurement information to base station, measurement information can comprise this 2 measuring results.

Optimum measuring result can be selected from 2 measuring results in base station, and determines corresponding to measuring result 2 optimum subgroups. Then 1 respective uplink received power according to group 0 and can be organized, select uplink received power maximum from two groups one group in base station. A subgroup of that maximum group of uplink received power can be determined to belong in 2 subgroups that optimum measuring result is corresponding in base station. . For example, it is assumed that the measuring result of optimum measures to obtain on the running time-frequency resource indicated by the 2nd kind of pilot signal configuration. 2nd kind of pilot signal configures corresponding to 2 subgroups being numbered 1. And the uplink received power organizing the port of 1 is maximum, so the transfer wave beam of candidate can be determined in base station, namely organizes 2 wave beams of subgroup 1 correspondence in 1, i.e. wave beam D and wave beam H. Base station can utilize the PMI in optimum measuring result that wave beam D and wave beam H is carried out weighting, such that it is able to determine transfer wave beam. In the present embodiment, owing to PMI is change, so base station is also change based on the transfer wave beam that PMI weighting is formed, therefore, it is possible to form abundanter transfer wave beam.

Fig. 5 is the indicative flowchart of the method transmitting pilot signal according to another embodiment of the present invention. The method of Fig. 5 is performed by UE.

510, receiving n pilot signal being sent by the port of q group of base station, wherein, q group is that p port corresponding to m wave beam is comprised n port according to each group and carry out division acquisition by base station, m and p is the positive integer being greater than 1, n and q is the positive integer being greater than 1; I-th pilot signal of i-th port in each group for sending in n pilot signal, 1��i��n, i is positive integer.

520, n pilot signal is measured.

In the embodiment of the present invention, by receiving n the pilot signal that base station is sent by the port of q group, wherein i-th pilot signal of i-th port in each group for sending in n pilot signal so that the reduced number of pilot signal such that it is able to save the expense of pilot signal.

Can selection of land, as an embodiment, before step 510, UE can receive the signaling that base station sends, this signaling is used to indicate the configuration of the x kind pilot signal corresponding to the port of q group, wherein, in q group each group is divided into x subgroup, each subgroup comprises y port, jth subgroup in each group is corresponding to the jth kind pilot signal configuration in the configuration of x kind pilot signal, and pilot signal is configured for the running time-frequency resource that instruction pilot signal takies, x and y is the positive integer being more than or equal to 1,1��j��x, j is positive integer.

Can selection of land, as another embodiment, in step 520, n pilot signal can be measured by UE on the x kind pilot signal running time-frequency resource that indicates respectively of configuration, obtains x measuring result. After step 520, UE can send measurement information to base station, measures information x measuring result.

Can selection of land, as another embodiment, UE can pass through transfer wave beam, receive base station send data, wherein transfer wave beam is that base station is determined according to the uplink received power of measurement information and the port of q group.

Can selection of land, as another embodiment, each measuring result in x measuring result can comprise CQI. Or, each measuring result can comprise CQI, and following at least one: order, PMI.

Can selection of land, as another embodiment, pilot signal can be CSI-RS.

Fig. 6 is the schematic block diagram of base station according to an embodiment of the invention. The base station 600 of Fig. 6 comprises determining unit 610 and sends unit 620.

Determining unit 610 determines m wave beam, and determines p port corresponding to m wave beam, and wherein m and p is the positive integer being greater than 1. Sending the port of unit 620 by q group, send n pilot signal to UE, wherein, p port is comprised n port according to each group and carries out dividing acquisition by q group, n and q is the positive integer being greater than 1; I-th pilot signal of i-th port in each group for sending in n pilot signal, 1��i��n, i is positive integer.

Can selection of land, as an embodiment, base station 600 can also comprise grouped element 630. P port according to the sensing of m wave beam, can be divided into q group by grouped element 630.

Can selection of land, as another embodiment, it is determined that unit 610 can utilize the mode of antenna weighting, form m wave beam.

Can selection of land, as another embodiment, it is determined that unit 610 can utilize m weighted value, respectively one group of same polarization antenna is carried out weighting, forms m wave beam.

Can selection of land, as another embodiment, it is determined that unit 610 can utilize k weighted value, respectively one group of same polarization antenna is carried out weighting, form k wave beam, k be greater than 1 positive integer, it is possible to use two adjacent wave beams any in k wave beam are carried out weighting by the first weighted value, form m/2 wave beam, and the 2nd weighted value can be utilized, two adjacent wave beams any in k wave beam are carried out weighting, forms m/2 wave beam.

Can selection of land, as another embodiment, it is determined that unit 610 can utilize m/2 weighted value, respectively first group of same polarization antenna is carried out weighting, forms m/2 wave beam; Utilize m/2 weighted value, respectively the 2nd group of same polarization antenna is carried out weighting, form m/2 wave beam; Wherein, there is spacing between first group of same polarization antenna and the 2nd group of same polarization antenna.

Can selection of land, as another embodiment, determining unit 610 can also at the transmission port of unit 620 by q group, before sending n pilot signal to UE, determine the configuration of the x kind pilot signal corresponding to port of q group, wherein, in q group each group is divided into x subgroup, each subgroup comprises y port, jth subgroup in each group is corresponding to the jth kind pilot signal configuration in the configuration of x kind pilot signal, and pilot signal is configured for the running time-frequency resource that instruction pilot signal takies, x and y is the positive integer being more than or equal to 1,1��j��x, j is positive integer. Sending unit 620 and can also send signaling to UE, this signaling is used to indicate the configuration of x kind pilot signal.

Can selection of land, as another embodiment, base station 600 can also comprise receive unit 640. Receive unit 640 and can receive measurement information from UE, measure information UE and configure x the measuring result measured on the running time-frequency resource indicated respectively and obtain in x kind pilot signal. Determining unit 610 can also according to the uplink received power of the port of the measurement information and q group that receive unit 640 reception, it is determined that transfer wave beam. Send unit 620 and can also utilize transfer wave beam, send data to UE.

Can selection of land, as another embodiment, determining unit 610 can select optimum measuring result from x measuring result, and determine candidate's subgroup that optimum measuring result is corresponding, candidate's subgroup comprises at least one subgroup, it is possible to according to the uplink received power of the port of q group, the subgroup selecting uplink received power maximum from candidate's subgroup, and can according to a subgroup of the measuring result of optimum and selection, it is determined that the transfer wave beam of UE.

Can selection of land, as another embodiment, each measuring result in above-mentioned x measuring result can comprise CQI. Or, each measuring result can comprise CQI, and following at least one: order, PMI.

Can selection of land, as another embodiment, pilot signal can be CSI-RS.

Other function of base station 600 and operation with reference to the process relating to base station in the embodiment of the method for Fig. 1 to Fig. 4 above, in order to avoid repetition, can repeat no more.

Fig. 7 is the schematic block diagram of UE according to an embodiment of the invention. The UE700 of Fig. 7 comprises reception unit 710 and measuring unit 720.

Receive n the pilot signal that unit 710 is received base station and sent by the port of q group, wherein, to be base station comprise n port by p port corresponding to m wave beam according to each group to q group carries out dividing and obtain, m and p is the positive integer being greater than 1, n and q is the positive integer being greater than 1; I-th pilot signal of i-th port in each group for sending in n pilot signal, 1��i��n, i is positive integer. N the pilot signal receiving unit 710 reception is measured by measuring unit 720.

Can selection of land, as an embodiment, receiving unit 710 can also before receiving n the pilot signal that base station is sent by the port of q group, receive the signaling that base station sends, signaling is used to indicate the configuration of the x kind pilot signal corresponding to the port of q group, wherein, in q group each group is divided into x subgroup, each subgroup comprises y port, jth subgroup in each group is corresponding to the jth kind pilot signal configuration in the configuration of x kind pilot signal, pilot signal is configured for the running time-frequency resource that instruction pilot signal takies, x and y is the positive integer being more than or equal to 1, 1��j��x, j is positive integer.

Can selection of land, as another embodiment, UE700 can also comprise send unit 730.

N pilot signal can be measured by measuring unit 720 on the running time-frequency resource that the configuration of x kind pilot signal indicates respectively, obtains x measuring result.

Send unit 730 and can send measurement information to base station, measure information x measuring result.

Can selection of land, as another embodiment, receive unit 710 can also pass through transfer wave beam, receive base station transmission data, wherein transfer wave beam is that base station is determined according to the uplink received power of measurement information and the port of q group.

Can selection of land, as another embodiment, pilot signal can be CSI-RS.

Other function of UE700 and operation with reference to the process relating to UE in the embodiment of the method for Fig. 1 to Fig. 5 above, in order to avoid repetition, can repeat no more.

Fig. 8 is the schematic block diagram of base station according to another embodiment of the present invention. The base station 800 of Fig. 8 comprises treater 810 and transmitter 820.

M wave beam determined by treater 810, and determines p port corresponding to m wave beam, and wherein m and p is the positive integer being greater than 1. Transmitter 820, by the port of q group, sends n pilot signal to UE, and wherein, p port is comprised n port according to each group and carry out dividing acquisition by q group, n and q is the positive integer being greater than 1; I-th pilot signal of i-th port in each group for sending in n pilot signal, 1��i��n, i is positive integer.

Can selection of land, as an embodiment, p port according to the sensing of m wave beam, can also be divided into q group by treater 810.

Can selection of land, as another embodiment, treater 810 can utilize the mode of antenna weighting, forms m wave beam.

Can selection of land, as another embodiment, treater 810 can utilize m weighted value, respectively one group of same polarization antenna is carried out weighting, forms m wave beam.

Can selection of land, as another embodiment, treater 810 can utilize k weighted value, respectively one group of same polarization antenna is carried out weighting, forms k wave beam, k be greater than 1 positive integer; Utilize the first weighted value, two adjacent wave beams any in k wave beam are carried out weighting, forms m/2 wave beam; Utilize the 2nd weighted value, two adjacent wave beams any in k wave beam are carried out weighting, forms m/2 wave beam.

Can selection of land, as another embodiment, treater 810 can utilize m/2 weighted value, respectively first group of same polarization antenna is carried out weighting, forms m/2 wave beam; Utilize m/2 weighted value, respectively the 2nd group of same polarization antenna is carried out weighting, form m/2 wave beam; Wherein, there is spacing between first group of same polarization antenna and the 2nd group of same polarization antenna.

Can selection of land, as another embodiment, treater 810 can also at the port of transmitter 820 by q group, before sending n pilot signal to UE, determine the configuration of the x kind pilot signal corresponding to port of q group, wherein, in q group each group is divided into x subgroup, each subgroup comprises y port, jth subgroup in each group is corresponding to the jth kind pilot signal configuration in the configuration of x kind pilot signal, and pilot signal is configured for the running time-frequency resource that instruction pilot signal takies, x and y is the positive integer being more than or equal to 1,1��j��x, j is positive integer. Transmitter 820 can also send signaling to UE, and signaling is used to indicate the configuration of x kind pilot signal.

Can selection of land, as another embodiment, base station 800 can also comprise receptor 830. Receptor 830 can receive measurement information from UE, measures information UE and configures x the measuring result measured on the running time-frequency resource indicated respectively and obtain in x kind pilot signal. Treater 810 can also according to the uplink received power of the measurement information of receptor 830 reception and the port of q group, it is determined that the transfer wave beam of UE. Transmitter 820 can also utilize the transfer wave beam of UE, sends data to UE.

Can selection of land, as another embodiment, treater 810 can select optimum measuring result from x measuring result, and determine candidate's subgroup that optimum measuring result is corresponding, candidate's subgroup comprises at least one subgroup, it is possible to according to the uplink received power of the port of q group, the subgroup selecting uplink received power maximum from candidate's subgroup, and can according to a subgroup of the measuring result of optimum and selection, it is determined that the transfer wave beam of UE.

Can selection of land, as another embodiment, pilot signal can be CSI-RS.

Other function of base station 800 and operation with reference to the process relating to base station in the embodiment of the method for Fig. 1 to Fig. 4 above, in order to avoid repetition, can repeat no more.

Fig. 9 is the schematic block diagram of UE according to another embodiment of the present invention. The UE900 of Fig. 9 comprises receptor 910 and treater 920.

Receptor 910 receives n the pilot signal that base station is sent by the port of q group, wherein, to be base station comprise n port by p port corresponding to m wave beam according to each group to q group carries out dividing and obtain, m and p is the positive integer being greater than 1, n and q is the positive integer being greater than 1; I-th pilot signal of i-th port in each group for sending in n pilot signal, 1��i��n, i is positive integer. N the pilot signal that receptor 910 receives is measured by treater 920.

Can selection of land, as an embodiment, receptor 910 can also before receiving n the pilot signal that base station is sent by the port of q group, receive the signaling that base station sends, signaling is used to indicate the configuration of the x kind pilot signal corresponding to the port of q group, wherein, in q group each group is divided into x subgroup, each subgroup comprises y port, jth subgroup in each group is corresponding to the jth kind pilot signal configuration in the configuration of x kind pilot signal, pilot signal is configured for the running time-frequency resource that instruction pilot signal takies, x and y is the positive integer being more than or equal to 1, 1��j��x, j is positive integer.

Can selection of land, as another embodiment, UE900 can also comprise transmitter 930.

N pilot signal can be measured by treater 920 on the running time-frequency resource that the configuration of x kind pilot signal indicates respectively, obtains x measuring result.

Transmitter 930 can send measurement information to base station, measures information x measuring result.

Can selection of land, as another embodiment, receptor 910 can also pass through transfer wave beam, receive base station send data, wherein transfer wave beam is that base station is determined according to the uplink received power of measurement information and the port of q group.

Can selection of land, as another embodiment, pilot signal can be CSI-RS.

Other function of UE900 and operation with reference to the process relating to UE in the embodiment of the method for Fig. 1 to Fig. 5 above, in order to avoid repetition, can repeat no more.

Those of ordinary skill in the art are it should be appreciated that the unit of each example that describes in conjunction with embodiment disclosed herein and algorithm steps, it is possible to realize with the combination of electronic hardware or computer software and electronic hardware. These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme. Each specifically can should be used for using different methods to realize described function by professional and technical personnel, but this kind realizes should not thinking the scope exceeding the present invention.

The technician of art can be well understood to, for convenience and simplicity of description, and the concrete working process of the system of foregoing description, device and unit, it is possible to reference to the corresponding process in aforementioned embodiment of the method, do not repeat them here.

In several embodiments that the application provides, it should be appreciated that, disclosed system, device and method, it is possible to realize by another way. Such as, device embodiment described above is only schematic, such as, the division of described unit, being only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can ignore, or do not perform. Another point, shown or discussed coupling each other or directly coupling or communication connection can be the indirect coupling by some interfaces, device or unit or communication connection, it is possible to be electrical, machinery or other form.

The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or can also be distributed on multiple NE. Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it is also possible to is that the independent physics of each unit exists, it is also possible to two or more unit are in a unit integrated.

If described function realize using the form of software functional unit and as independent production marketing or when using, it is possible to be stored in a computer read/write memory medium. Based on such understanding, the technical scheme of the present invention in essence or says that the part of part or this technical scheme prior art contributed can embody with the form of software product, this computer software product is stored in a storage media, comprise some instructions with so that a computer equipment (can be Personal Computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention. And aforesaid storage media comprises: USB flash disk, portable hard drive, read-only storage (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.

The above; it is only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any it is familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention. Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.

Claims

1. one kind transmits the method for pilot signal, it is characterised in that, comprising:

Determining m wave beam, and determine p port corresponding to described m wave beam, wherein m and p is the positive integer being greater than 1;

By the port of q group, sending n pilot signal to user equipment (UE), wherein, described p port is comprised n port according to each group and carries out dividing acquisition by described q group, n and q is the positive integer being greater than 1; I-th pilot signal of i-th port in described each group for sending in described n pilot signal, 1��i��n, i is positive integer.

2. method according to claim 1, it is characterised in that, also comprise:

Sensing according to described m wave beam, is divided into q group by described p port.

3. method according to claim 1 and 2, it is characterised in that, described determine m wave beam, comprising:

Utilize the mode of antenna weighting, form described m wave beam.

4. method according to claim 3, it is characterised in that, the described mode utilizing antenna weighting, forms described m wave beam, comprising:

Utilize m weighted value, respectively one group of same polarization antenna is carried out weighting, form described m wave beam.

5. method according to claim 3, it is characterised in that, the described mode utilizing antenna weighting, forms described m wave beam, comprising:

Utilize k weighted value, respectively one group of same polarization antenna carried out weighting, form k wave beam, k be greater than 1 positive integer;

Utilize the first weighted value, two adjacent wave beams any in described k wave beam are carried out weighting, forms m/2 wave beam;

Utilize the 2nd weighted value, two adjacent wave beams any in described k wave beam are carried out weighting, forms m/2 wave beam.

6. method according to claim 3, it is characterised in that, the described mode utilizing antenna weighting, forms described m wave beam, comprising:

Utilize m/2 weighted value, respectively first group of same polarization antenna is carried out weighting, form m/2 wave beam;

Utilize described m/2 weighted value, respectively the 2nd group of same polarization antenna is carried out weighting, form m/2 wave beam;

Wherein, there is spacing between described first group of same polarization antenna and described 2nd group of same polarization antenna.

7. method according to the arbitrary item of claim 1-6, it is characterised in that, at the described port by q group, before sending n pilot signal to UE, also comprise:

Determine the configuration of the x kind pilot signal corresponding to port of described q group, wherein, each group in described q group is divided into x subgroup, each subgroup comprises y port, jth subgroup in each group is corresponding to the jth kind pilot signal configuration in the configuration of described x kind pilot signal, and described pilot signal is configured for the running time-frequency resource that instruction pilot signal takies, x and y is the positive integer being more than or equal to 1,1��j��x, j is positive integer;

Sending signaling to described UE, described signaling is used to indicate the configuration of described x kind pilot signal.

8. method according to claim 7, it is characterised in that, also comprise:

Receiving measurement information from described UE, UE described in described measurement information configures x the measuring result measured on the running time-frequency resource indicated respectively and obtain in described x kind pilot signal;

According to the uplink received power of described measurement information and the port of described q group, it is determined that the transfer wave beam of described UE;

Utilize the transfer wave beam of described UE, send data to described UE.

9. method according to claim 8, it is characterised in that, described according to the uplink received power of described measurement information and the port of described q group, it is determined that the transfer wave beam of described UE, comprising:

Optimum measuring result is selected from described x measuring result, and candidate's subgroup that the measuring result determining described optimum is corresponding, described candidate's subgroup comprises at least one subgroup;

The uplink received power of the port according to described q group, the subgroup selecting uplink received power maximum from described candidate's subgroup;

Measuring result according to described optimum and a subgroup of described selection, it is determined that the transfer wave beam of described UE.

10. method according to claim 8 or claim 9, it is characterised in that, each measuring result in described x measuring result comprises channel quality indicator (CQI);

Or, each measuring result described comprises described CQI, and following at least one: order, pre-coding matrix instruction PMI.

11. methods according to claim 1, it is characterised in that, described pilot signal is channel state information reference signals CSI-RS.

12. 1 kinds transmit the method for pilot signal, it is characterised in that, comprising:

Receive n the pilot signal that base station is sent by the port of q group, wherein, to be described base station comprise n port by p port corresponding to m wave beam according to each group to described q group carries out dividing and obtain, m and p is the positive integer being greater than 1, n and q is the positive integer being greater than 1; I-th pilot signal of i-th port in described each group for sending in described n pilot signal, 1��i��n, i is positive integer;

Described n pilot signal is measured.

13. methods according to claim 12, it is characterised in that, before n the pilot signal that described reception base station is sent by the port of q group, also comprise:

Receive the signaling that described base station sends, described signaling is used to indicate the configuration of the x kind pilot signal corresponding to port of described q group, wherein, each group in described q group is divided into x subgroup, and each subgroup comprises y port, and jth the subgroup in each group is corresponding to the jth kind pilot signal configuration in the configuration of described x kind pilot signal, described pilot signal is configured for the running time-frequency resource that instruction pilot signal takies, x and y is the positive integer being more than or equal to 1, and 1��j��x, j is positive integer.

14. methods according to claim 13, it is characterised in that, described described n pilot signal is measured, comprising:

Described n pilot signal is measured by the running time-frequency resource that the configuration of described x kind pilot signal indicates respectively, obtains x measuring result;

Described method also comprises:

Measurement information, x measuring result described in described measurement information is sent to described base station.

15. methods according to claim 14, it is characterised in that, also comprise:

By transfer wave beam, receiving the data that described base station sends, wherein said transfer wave beam is that described base station is determined according to the uplink received power of described measurement information and the port of described q group.

16. methods according to claims 14 or 15, it is characterised in that, each measuring result in described x measuring result comprises channel quality indicator (CQI);

17. methods according to claim 12, it is characterised in that, described pilot signal is channel state information reference signals CSI-RS.

18. a base station, it is characterised in that, comprising:

Determining unit, for determining m wave beam, and determines p port corresponding to described m wave beam, and wherein m and p is the positive integer being greater than 1;

Sending unit, for the port by q group, send n pilot signal to user equipment (UE), wherein, described p port is comprised n port according to each group and carries out dividing acquisition by described q group, n and q is the positive integer being greater than 1; I-th pilot signal of i-th port in described each group for sending in described n pilot signal, 1��i��n, i is positive integer.

19. base stations according to claim 18, it is characterised in that, also comprise:

Grouped element, for the sensing according to described m wave beam, is divided into q group by described p port.

20. base stations according to claim 18 or 19, it is characterised in that, described determining unit, specifically for utilizing the mode of antenna weighting, forms described m wave beam.

21. base stations according to claim 20, it is characterised in that, one group of same polarization antenna, specifically for utilizing m weighted value, is carried out weighting by described determining unit respectively, forms described m wave beam.

22. base stations according to claim 20, it is characterised in that, one group of same polarization antenna, specifically for utilizing k weighted value, is carried out weighting by described determining unit respectively, forms k wave beam, k be greater than 1 positive integer; Utilize the first weighted value, two adjacent wave beams any in described k wave beam are carried out weighting, forms m/2 wave beam; Utilize the 2nd weighted value, two adjacent wave beams any in described k wave beam are carried out weighting, forms m/2 wave beam.

23. base stations according to claim 20, it is characterised in that, first group of same polarization antenna, specifically for utilizing m/2 weighted value, is carried out weighting by described determining unit respectively, forms m/2 wave beam; Utilize described m/2 weighted value, respectively the 2nd group of same polarization antenna is carried out weighting, form m/2 wave beam; Wherein, there is spacing between described first group of same polarization antenna and described 2nd group of same polarization antenna.

24. base stations according to the arbitrary item of claim 18-23, it is characterised in that,

Described determining unit, also for being sent before n pilot signal to UE by the port of q group at described transmission unit, determine the configuration of the x kind pilot signal corresponding to port of described q group, wherein, each group in described q group is divided into x subgroup, each subgroup comprises y port, jth subgroup in each group is corresponding to the jth kind pilot signal configuration in the configuration of described x kind pilot signal, described pilot signal is configured for the running time-frequency resource that instruction pilot signal takies, x and y is the positive integer being more than or equal to 1,1��j��x, j is positive integer;

Described transmission unit, also for sending signaling to described UE, described signaling is used to indicate the configuration of described x kind pilot signal.

25. base stations according to claim 24, it is characterised in that, also comprise reception unit;

Described reception unit, for receiving measurement information from described UE, UE described in described measurement information configures x the measuring result measured on the running time-frequency resource indicated respectively and obtain in described x kind pilot signal;

Described determining unit, also for the uplink received power of the measurement information that receives according to described reception unit and the port of described q group, it is determined that the transfer wave beam of described UE;

Described transmission unit, also for utilizing the transfer wave beam of described UE, sends data to described UE.

26. base stations according to claim 25, it is characterised in that, described determining unit specifically for:

Optimum measuring result is selected from described x measuring result, and candidate's subgroup that the measuring result determining described optimum is corresponding, described candidate's subgroup comprises at least one subgroup; The uplink received power of the port according to described q group, the subgroup selecting uplink received power maximum from described candidate's subgroup; Measuring result according to described optimum and a subgroup of described selection, it is determined that the transfer wave beam of described UE.

27. 1 kinds of user equipmenies, it is characterised in that, comprising:

Receive unit, for receiving n the pilot signal that base station is sent by the port of q group, wherein, to be described base station comprise n port by p port corresponding to m wave beam according to each group to described q group carries out dividing and obtain, m and p is the positive integer being greater than 1, n and q is the positive integer being greater than 1; I-th pilot signal of i-th port in described each group for sending in described n pilot signal, 1��i��n, i is positive integer;

Measuring unit, for measuring described n the pilot signal that described reception unit receives.

28. user equipmenies according to claim 27, it is characterised in that,

Described reception unit, also for before receiving n the pilot signal that base station is sent by the port of q group, receive the signaling that described base station sends, described signaling is used to indicate the configuration of the x kind pilot signal corresponding to port of described q group, wherein, each group in described q group is divided into x subgroup, each subgroup comprises y port, jth subgroup in each group is corresponding to the jth kind pilot signal configuration in the configuration of described x kind pilot signal, described pilot signal is configured for the running time-frequency resource that instruction pilot signal takies, x and y is the positive integer being more than or equal to 1, 1��j��x, j is positive integer.

29. user equipmenies according to claim 28, it is characterised in that, also comprise transmission unit;

Described measuring unit, measures described n pilot signal on the running time-frequency resource indicated respectively specifically for configuring in described x kind pilot signal, obtains x measuring result;

Described transmission unit, for sending measurement information, x measuring result described in described measurement information to described base station.

30. user equipmenies according to claim 29, it is characterised in that,

Described reception unit, also for by transfer wave beam, receiving the data that described base station sends, wherein said transfer wave beam is that described base station is determined according to the uplink received power of described measurement information and the port of described q group.

31. 1 kinds of communication systems, it is characterised in that, comprising:

Base station and user equipment, wherein,

Described base station is for performing the method as described in item as arbitrary in claim 1-11;

Described user equipment is for performing the method as described in item as arbitrary in claim 12-17.