Channel feedback based on reference signal. RU patent 2520358.

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to techniques for reporting feedback to wireless communication channels. In one design, a cell transmits a cell-specific reference signal (CRS) used for channel estimation and coherent demodulation and a channel spatial information reference signal (CSI-RS) used for channel measurement and channel feedback reporting. The cell may transmit the CSI-RS less frequently than the CRS, or from more antenna ports than the CRS, or on fewer resource elements than the CRS, or any combination thereof. User equipment (UE) determines one bandwidth part configured for the UE, each bandwidth part covering at least one subband. The UE receives the CRS and CSI-RS from the cell, determines channel feedback information for at least one bandwidth part based on the CSI-RS, sends the channel feedback information to the cell, and receives data transmitted by the cell based on the channel feedback information.

EFFECT: improved performance due to downlink data transmission by having the UE measure the channel characteristics, determining channel feedback information based on the measured channel characteristics and sending the information to a base station.

48 cl, 11 dwg, 1 tbl

A CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the priority of the provisional patent application (USA) serial number 61/294941 entitled "CHANNEL FEEDBACK BASED ON REFERENCE SIGNAL", filed on 14 January 2010, the designated successor of the application and contained in this document by reference.

THE TECHNICAL FIELD TO WHICH THE INVENTION RELATES

[0002] Real showdown, in General, refers to communications, and more specifically, to technologies for messages feedback information relating to the channel for wireless communications.

THE LEVEL OF TECHNOLOGY

[0003] wireless communication Systems are widely deployed to provide different content of communications, such as voice, video, packet data, messaging, broadcast, etc., These wireless systems can be multiple access systems that can support multiple users through the sharing of available system resources. Examples of such systems multiple access include a system of multiple access code division (CDMA)systems, multiple access time division (TDMA), multiple access system with frequency separation (FDMA), systems of orthogonal FDMA (OFDMA) and FDMA system with single-carrier (SC-FDMA).

[0004] wireless communication System can include a certain number of base stations that can communicate to a certain number of subscriber devices (UE). The base station can transmit data on the downlink in UE. Good performance can be achieved for data downlink by measuring by UE characteristics of the channel in the downlink, definitions feedback information relating to the channels on the basis of measured characteristics of the channel and send feedback information relating to the channels in the base station. Feedback relating to the channels that can contain various types of information that can be used to transfer the data, as described below. It may be desirable to effectively communicate information feedback relating to the channels.

DISCLOSURE OF THE INVENTION

[0005] In this document describes the technology to support the measurement of the channel and the message by UE in wireless systems. In one scheme honeycomb can pass the first reference signal, such as characteristic of the cell reference signal (CRS), which can be used by UE for the assessment of the channel coherent demodulation etc. Honeycomb also can pass the second signal, for example the reference signal with spatial information channel (CSI-RS), which can be used by UE for measuring channel, feedback related to channels, etc. Honeycomb can pass the second reference signal less often than the first signal, or from a larger number of antenna ports than the first signal, or to a smaller number of items resources than the first signal, or based on any combination of the above.

[0006] In another schema honeycomb can pass a reference signal using a pre-coding. Honeycomb can take the feedback related to the channels of subscriber units (UE). Feedback relating to the channels may be determined on the basis of the reference signal by UE, at least for one part bandwidth configured for UE. Each part of the bandwidth can cover at least one podporou frequency from many podpole frequencies.

[0007] In one scheme UE can identify at least one part bandwidth configured for UE, each part bandwidth covers at least one podporou frequency from many podpole frequencies. UE can take the first and second calibration signals from the cell. UE can determine the feedback related to the channels, at least for one part of bandwidth based on the second reference signal. Feedback relating to the channels may contain an indication of the quality of the channel (CQI), or indicator rank (RI), or indicator matrix preliminary coding (PMI), or direction indicator channel (CDI), or any combination of the above. UE can send feedback information relating to the channels, at least for one part of the bandwidth in the honeycomb. UE can then accept the data transferred by the honeycomb in UE, on the basis of feedback information relating to the channels. In General, UE can take the second reference signal from one or more sites, to determine the feedback related to the channels for each interest honeycomb, and send your feedback related to the channels, at least one cell.

[0008] Further described in more detail various aspects and features of the invention.

BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1 illustrates a wireless communications system.

[0010] Fig. 2 shows the approximate structure of the frame.

[0011] Fig. 3 shows two sample plain podkatov.

[0012] Fig. 4 shows a sample hierarchical structure in frequency.

[0013] Fig. 5 and 6 show the process and the device, respectively, to perform measurement of the channel and message.

[0014] Fig. 7 and 8 show the process and the device, respectively, to support the measurement channel and messages.

[0015] Fig. 9 and 10 show a different process and the other device, respectively, to support the measurement channel and messages.

[0016] Fig. 11 illustrates the block diagram of the base station and the UE.

THE IMPLEMENTATION OF THE INVENTION

[0017] Technology described in this document can be used for various wireless communication systems, such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA and other systems. The terms "system" and "network" are often used interchangeably. CDMA system can implement such technology of radio as a universal terrestrial radio access (UTRA), Cdma2000, etc. UTRA include wideband CDMA (WCDMA) and other options CDMA. Cdma2000 covers standards IS-2000, IS-95 and is-856. TDMA system can implement such technology of radio communication, as global system for mobile communication (GSM). OFDMA system can implement such technology of radio communication, as the enhanced UTRA (E-UTRA), super wideband mobile (UMB), IEEE 802.11 (Wi-Fi)IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM® etc. UTRA and E-UTRA are part of a universal system for mobile communications (UMTS). Standard long-term development of 3GPP (LTE) and advanced (LTE LTE-A) are new versions of UMTS who use E-UTRA that uses OFDMA in the downlink and SC-FDMA in the ascending line. UTRA, E-UTRA, UMTS, LTE LTE-A and GSM described in the documents of the organization, called the partnership project of the third generation (3GPP). Cdma2000 and UMB described in the documents of the organization, called the partnership project of the third generation 2 (3GPP2). The technology described in this document can be used for systems and radio technologies, mentioned above, as well as for other systems and radio technologies. For simplicity, certain aspects of the technologies described below for LTE, and terminology LTE is used by most of the following description.

[0018] Fig. 1 shows the system is 100 wireless communication, which can be LTE system or some other system. System 100 may include a certain number of advanced node B (eNB) 110 and other network objects. ENB can be a station that communicates with the UE, and can also be referred to as the base station, node B, the access point etc. Each eNB 110 may provide coverage due to a specific geographical area and is able to communicate to UE, located within the coverage area. To increase system capacity, full coverage eNB can be partitioned into several (for example, three smaller areas. Each smaller area can be maintained through appropriate subsystem eNB. In 3GPP, the term "cell" may be referred to as the least coverage eNB and/or subsystem node B, which serves the coverage area. ENB can support one or more (for example, three hundred.

[0019] UE 120 can be distributed through the system, and each UE can be stationary or mobile. UE can also be referred to as the mobile station, the terminal, the terminal access subscriber unit, station etc. UE can be cell phone, personal digital assistants (PDAs), wireless modem, wireless communication, handheld device, trip computer, wireless phone, station wireless local loop (WLL), smartphone, netbook and smartbook, tablet etc.

[0020] Fig. 2 shows an approximate structure of the 200 frame used for downlink to LTE. Timeline transfer for downlink can be partitioned into units radiokatu. Each radiocat can have a predefined duration (for example, 10 milliseconds (MS)and can be partitioned 10 podkatov with indexes from 0 to 9. Each podkat may include two time interval. Each radiocat thus may include 20 time intervals index 0-19. Each time interval may include L periods of character, such as the seven periods of characters for regular cyclic prefix (as shown in Fig. 2) or six periods of characters for advanced cyclic prefix. 2L periods of character in every podkate can be assigned indexes 0-2L-1.

[0021] LTE uses multiplexing orthogonal frequency division (OFDM) in the downlink and multiplexing frequency division on single-carrier (SC-FDM) in the ascending line.

OFDM and SC-FDMA partition frequency range into several (N FFT ) orthogonal sub-carriers, which are also usually called tones, elementary signals, etc. Each subcarriers can be modulated by using the data. In General, the symbol modulation go in the frequency domain in OFDM and in the time domain with SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (N FFT ) may depend on the bandwidth of the system. For example, N FFT can be set to 128, 256, 512, 1024 or 2048 for bandwidth system 1.25, and 2.5, 5, 10 or 20 megahertz (MHz), respectively.

[0022] Frequency-time resources available for the downlink can be partitioned into blocks resources. Each block resources can cover 12 carriers in the same time interval and may include a certain number of resource items. Each element of resources can cover one of subcarriers in the same period character and can be used to send one symbol modulation, which may be real or complex value. In downlink OFDM symbol may be transferred in each period character podkata. OFDM symbol may include characters modulation with nonzero values for elements of the resources used for transmission, and zero values for items of resources that are not used for transmission.

[0023] Fig. 2 also shows the approximate transfer some reference signals in LTE. Reference signal is a signal that is known a priori by the sending device and the receiving device and can also be referred to as a pilot signal, preamble, the training sequence, etc. Typical cell reference signal (CRS) is a reference signal, which is characteristic of cells, for example, formed on the basis of a cell ID (ID). CRS can be transmitted down the line each podkate and can be used for various purposes, such as assessing channel coherent demodulation etc.

[0024] Fig. 3 shows two sample format and 320 310 podkatov for downlink to the usual cyclic prefix. As shown in Fig. 3, podkat for downlink may include the management area, followed by the data area. The control area may include the first Q OFDM symbols podkata, where Q can be equal to 1,2, 3 or 4. Q can vary between polkadraai and can be sent in the first period of the character podkata. The first Q OFDM symbols can carry control information. The data area may include the remaining 2L-Q periods characters podkata and can transfer data and/or other information to UE.

[0025] Format 310 podkata can be used to eNB containing two antenna ports. ENB can pass CRS for each cell, supported by eNB, in periods of characters 0, 4, 7 and 11. In Fig. 3, for a given element of resources labeled R i , a supporting character can be transmitted on this element of resources from the antenna port i and symbols modulation may not be transferred under this element of the resources from other antenna ports. Antenna port can also be referred to as the antenna, the antenna element, etc. Format 320 podkata can be used by eNB containing four antenna port. ENB can pass CRS for each cell, supported by eNB, in periods of characters 0, 1,4, 7, 8 and 11. For both formats and 320 310 podkatov, eNB can pass CRS for each cell on the eight elements of resources for each of the antenna ports 0 and 1 single pair of blocks resources. The resource items that are not used for CRS, can be used to transmit data and/or other information.

[0026] In the aspect, the reference signal with spatial information (or information state) channel (CSI-RS) can be transmitted less often than CRS, and can be used for other purposes, such as the measurement of the channel, feedback related to channels, etc. In the example shown in Fig. 2, CSI-RS is transmitted every 5 MS in podkata 0 and 5 each radiokatu. CSI-RS can also be transferred to another frequency and/or other podkata. In the diagram shown in Fig. 2, CSI-RS is transmitted in only one period character in each of podkatov 0 and 5. In General, CSI-RS can be presented in any number of periods of characters in each CSI-RS-podkata, which is podkatom, which is transferred to CSI-RS.

[0027] CSI-RS can be used by UE for measuring channel to obtain feedback information relating to the channels on the quality of the channel and spatial properties. Feedback relating to the channels can also be referred to as the information channel status, information channel, etc. and can to contain one or more of the following:

- Indicator rank (RI) - specifies the number of threads data or code words to be used in parallel (or the number of levels you want to use for data transfer)

- A quality indicator channel (CQI) - indicates whether the quality of each channel of one or more data streams,

- Indicator matrix preliminary coding (PMI) - specifies the matrix pre-encoding that should be used to preliminary data coding,

- Direction indicator channel (CDI) - specifies the spatial direction (for example, the dominant eigenvector) for data transmission, and

- Other information that can be used to transfer data.

- CSI-RS is passed infrequently (or diffused in time) with a configurable frequency/duty cycle, such as 2 MS 5 MS 10 MS, 20 MS, etc.,

- CSI-RS covers the entire bandwidth of the system, but is passed by a small number of resource items frequency (or sparsely, in frequency), for example in two or fewer items of resources per antenna port for each block of resources, which is transferred to CSI-RS,

- CSI-RS is transferred from 8 antenna ports, and the number of antenna ports for CSI-RS can be configured (for example, statically),

- CSI-RS data thins in the field of data podkata,

- Vnutrirodovoe CSI-RS-multiplexing in one podkate is the basis, and

- CSI-RS is passed on the basis of CSI-RS-template, which may not allow management, and OFDM symbols that carry CRS.

[0030] CSI-RS-template for cell can specify certain elements of the resources which can be transferred to CSI-RS by cell. CSI-RS-template can have one or more of the following characteristics:

- CSI-RS-pattern is characteristic of cells,

- CSI-RS-template depends on the number of antenna ports, system time, cell ID, and so on,

- CSI-RS-template present in CSI-RS-podkata with this frequency,

- CSI-RS-template limited subset of all podkatov that is referred to as a set of CSI-RS-podkatov, in each period of specific duration, and

- CSI-RS-template for different antenna ports hundred different may jump in time, and jump can depend on cell ID, index antenna port, system time, etc.

[0031] Set CSI-RS-podkatov may exclude podkata involving physical broadcast channel (PBCH) or synchronization signals, in order to avoid interference PBCH and signals synchronization.

[0032] to reduce the speed collisions between CSI-RS for different sites, podkata, which is transferred to CSI-RS, can jump in the framework of the set of CSI-RS-podkatov in time. CSI-RS-jump can be shared by hundreds (i.e. typical cell CSI-RS-jump can be deactivated) by using the default to cell ID in the function of the jump. General CSI-RS-jump for sites may be useful in order to maintain CoMP-technologies such as joint transfer, which may contain a certain number of cells.

[0033] CSI-RS can be transferred from a configurable number of antenna ports. CSI-RS for different antenna ports identical cells can be orthogonal multiplexed using multiplexing time division (TDM) or multiplexing code division (CDM), or multiplexing frequency division (FDM), or any combination of the above. CSI-RS for each antenna port may evenly spread on the frequency in one OFDM-symbol, for example with frequency diversity in 6 sub carriers.

[0034] Honeycomb can limit the number of antenna ports, from which you can send CRS (for example, at most two antenna ports)if the number of antenna ports is large enough (for example, more than two). Limiting the number of antenna ports for CSI-RS can (i) provide a lower coefficient of multiple use on CSI-RS without increasing the number of podkatov used for CSI-RS, and (ii) not to allow sharing power with characteristic UE reference signal (UE-RS). For CoMP elements of the resources used by several hundred data in one or more UE, can be thinned by CSI-RS.

[0035] table 1 lists some of the characteristics of CRS and CSI-RS for comparison.

Parameter

Periodicity

Is passed in each podkate

Is passed in each of 2, 5, 10, 20, or some other number podkata

Frequency

Transmitted across the bandwidth of the system

Transmitted across the bandwidth of the system

Is transmitted in 8 resource items in a couple blocks resources

Transmitted by 1 or 2 items of resources in the couple of blocks resources

The number of antenna ports

Sent from up to 4 antenna ports

Is transferred from a maximum of 8 antenna ports

Configurability

Fixed - is specified in the standard.

Is configured through the cell.

[0036] In the aspect that UE can perform the measurement channel based on the CSI-RS instead of or in addition to the CRS. In addition, UE can perform the measurement channel for the whole or part of the bandwidth of the system. UE can determine the feedback related to the channels on the basis of the measuring channel and can provide information feedback relating to the TV, one or more cells.

[0037] Honeycomb can pass CSI-RS in UE within its coverage. Honeycomb and one or more neighbouring hundred can participate in coordination miatovich interference (ICIC)to ensure reliable CSI-RS for measuring channel through UE in the cell. To improve penetration/coverage CSI-RS, honeycomb can pass CSI-RS in the field of data podkata, and its neighboring cells can perform the IOC for the corresponding elements of the resources in the area of data, so data from the next hundred do not lead to excessive interference for CSI-RS from the honeycomb. Honeycomb can pass CSI-RS throughout the bandwidth of the system, and ICIC can be implemented as follows:

- Disruptive cells transmit data with low level of power to reduce interference for CSI-RS from the honeycomb.

[0038] scheme of clearing/thinning the decision whether to do or not extinction, may depend on the characteristics of the channel, observed by UE. For example, a damping can be done, if UE see excessive noise, or can be ignored otherwise. One cell may interfere with multiple satam and then can extinguish all the elements of resources or podkata used by these several hundred to pass SI-RS. Repayment may be ineffective, in particular, if necessary, to perform the extinguishing of several hundreds.

[0039] Scheme of reduction of power/control may, in particular, apply for a homogeneous system with honeycombs identical type, for example, macrostate. However, reducing power may be ineffective for heterogeneous systems with cells of different types, for example, macrostate, femtocells, etc. Power reduction can also be ineffective for UE, which can operate at low geometry or low quality of receiving signal, for example, in geometry just -20 dB.

[0040] Extinguishing or reducing power can ensure that UE can be reliably take CSI-RS for measuring channel. However, it is likely UE that require reliable CSI-RS for measuring channel, not dispatched throughout the bandwidth of the system. These UE may not need to measure CSI-RS throughout the bandwidth of the system and may not have to inform the quality of the channel for the entire bandwidth of the system.

[0041] In light of the above observations extinguishing or reducing power through ICIC can be implemented in TDM mode and/or FDM mode to increase efficiency. For TDM interfering honeycomb can extinguish or reduce power input, only certain podkatov instead of all podkatov, which is transferred to CSI-RS. For FDM interfering honeycomb can extinguish or reduce include only certain parts of the bandwidth of the system instead of the entire bandwidth of the system. As for TDM and FDM interfering honeycomb can extinguish or reduce the power only in certain parts of the bandwidth of the system in certain podkata, which is transferred to CSI-RS. Extinguishing or reducing power when using TDM and/or FDM can improve efficiency by extinguishing or reducing transmit power throughout the data region and in the entire bandwidth of the system. Can be optional to extinguish or reduce power throughout the bandwidth of the system, because it is unlikely that UE that require reliable CSI-RS, dispatched in the entire bandwidth of the system.

[0042] In one scheme, the bandwidth of the system can be partitioned on the basis of hierarchical structures to support more effective measurement of the channel and the message, as well as more effective extinguishing or reducing power through ICIC. The hierarchical structure can enable UE to measure the channel and message only for certain parts of the bandwidth of the system. The hierarchical structure can also give the opportunity satam to extinguish or reduce the transmit power only in certain parts of the bandwidth of the system.

[0043] Fig. 4 shows the scheme of a hierarchical structure 400, which can be used to measure the channel and messages. Just FFT N subcarriers can be obtained using OFDM. A subset of the total number of FFT N subcarriers can be applicable to send, and the remaining carriers (for example, about both edges of the bandwidth of the system) may not be used to act as a protective sub carriers. Applicable subcarriers can be used to generate inventory units, with each unit of resource covers 12 interconnecting carriers. The number of blocks of resources in each time interval may depend on the bandwidth of the system and can range from 6 to 110 for bandwidth of the system of 1.25 to 20 MHz.

[0044] Number podpole frequencies can be set. In one scheme, for feedback relating to channels, each popoloca frequencies may include 96 contiguous carriers for eight blocks resources and can cover the 1.44 MHz. The number podpole frequency may depend on the bandwidth of the system and can range from 1 to 13 for bandwidth of the system of 1.25 to 20 MHz. For bandwidth of 20 MHz first 12 podpole frequencies can cover eight blocks resources, and the last popoloca frequencies can cover four blocks resources.

[0045] can Also be set M parts bandwidth, where M may be one or more. The bandwidth can also be referred to as the group podpole frequency band frequency range, etc. of Part m of bandwidth for m

{1..., M}, may include N m related podpole frequencies, where N m can be one or more. M parts bandwidth can be of identical size or different sizes. It may be desirable to set M parts of bandwidth so that they have a size that is equal or close to equal. The number of parts bandwidth and the size of each part of the bandwidth can be configured and can depend on the bandwidth of the system.

[0046] In one scheme, UE can be configured (for example, semi-static) using typical UE set, which may cover all or a portion of the bandwidth of the system in which UE should use CSI-RS for measuring channel and feedback. Typical UE set can include all or a subset of M parts of bandwidth. UE can be configured using one or more parts of bandwidth based on the characteristics of the channel, observed by UE, and/or other factors.

[0047] as an example, three parts G1, G2 and G3 bandwidth can be set using 13 podpole S1-S13 frequency bandwidth of the system in 20 MHz as follows:

- G1={S1, S2, S3, S4},

- G2={S5, S6, S7, S8}, and

- G3={S9, S10, S11, S12, S13}.

[0048] First UE can be configured using all three parts of bandwidth if CSI-RS is considered to be reliable for this UE throughout the bandwidth of the system (for example, without excessive miatovich interference). In this case, the first UE may have characteristic UE set X1, which can be represented as X1={G1, G2, G3}. Second UE can be configured using only one part of the G1 bandwidth, and is typical of UE set X2 for the second UE can be represented as X2={G1}. Second UE can use CSI-RS only in part G1 bandwidth for measuring channel and feedback. Interfering with cell can extinguish or reduce the transmit power only in part G1 bandwidth and can DISPETCHERSKIJJ data in parts G2 and G3 bandwidth without interference for measuring channel through the second UE.

[0049] In one scheme, UE can be configured using the characteristic UE set X that can jump over the bandwidth of the system in time to receive frequency diversity. Jump frequencies can be based on the pattern or sequence of a jump of frequencies, which may depend on one or more parameters, such as the cell identity, ID UE, ID podkata, configuration CSI-RS which are specific to the cell, etc. Jump frequencies can also be based on the characteristics of the channel, observed by UE. For example, typical for UE set X can include only part of the bandwidth in which UE watching good enough characteristics of the canal and may omit part of the bandwidth in which UE watching bad characteristics of the channel. As another example, typical for UE set X can include good part bandwidth more often (or less frequent) and bad parts bandwidth less often (or more frequently).

[0050] as an example, UE can be configured using part of the G1 bandwidth in one time interval, then part G2 bandwidth in the next time interval, then part of the G3 bandwidth in the next time interval, then part G1 bandwidth in the next time interval, etc. Jump frequency for UE can be specified as follows:

- G1->G2->G3->G1->G2->....

[0051] In the above example UE can cyclically to pass three parts bandwidth in time and can be configured with the same frequency for each part of the bandwidth. In General, UE can be configured using one or more parts of bandwidth, with the same or different frequency. For example, UE can be configured using part of the G1 bandwidth twice as often than parts G2 and G3 bandwidth, as follows:

- G1->G2->G1->G3->G1->G2->G1->G3->...

[0052] In another scheme, UE can be configured using a characteristic of cells of Y, which may cover all or a portion of the bandwidth of the system in which UE should use CSI-RS for measuring channel and feedback. Serving honeycomb for UE and one or more neighbouring hundred can be coordinated so that they reserve a different set of resource items for transmission through every cell of his CSI-RS. Typical cell set Y to serving cells then may have minimal interference from adjacent cells.

[0053] In another scheme, UE can be configured using the characteristic UE set Z, which may be restricted in a typical cell CSI-RS-podkata. For example, typical for UE set Z can include only some podkata, which serves honeycomb passes CSI-RS. UE can then perform the measurement of the channel for CSI-RS only in podkata specify through typical UE set Z, and not in each podkata, which is transferred to CSI-RS.[0054] UE can also be configured with any combination of a set of X, Y, set Z and/or other sets. UE can perform the measurement of the channel for all configured sets.

[0056] Can be supported by one or more types of feedback related to the channels. Each type of feedback related to channels can specify how the measuring channel should be performed and reported by UE. Each type of feedback related to the channels that may include a message of any type of feedback information relating to the channels. For simplicity, the description covers a message CQI.

[0057] In one scheme, one or more of the following types of feedback related to the channels that can be supported:

- Feedback throughout the band - CQI-the value can be determined and reported for all configured parts of bandwidth or the entire bandwidth of the system,

- Broadband feedback - CQI-value can be determined and reported for each configured part bandwidth, and

- Pampalona feedback - CQI-value can be determined and reported for each of one or more podpole frequencies in the configured bandwidth.

[0058] UE can be configured using one or more types of feedback related to the channels. For example, UE can be configured using only broadband feedback or only podpolanie feedback, or as broadband feedback and podpolanie feedback or feedback throughout the band and podpolanie feedback, or some other combination of types of feedback related to the channels. UE can determine and report information feedback relating to the channels on the basis of each configured type of feedback related to the channels.

[0059] For feedback throughout the band UE can be performed with the ability to measure the channel for all configured parts bandwidth and/or the entire bandwidth of the system. UE can then perform the measurement of the channel, as configured, based on the CSI-RS. UE can get one CQI-value for all configured parts of bandwidth or the entire bandwidth of the system and may report it CQI-value.

[0060] For broadband feedback UE can perform the measurement channel for each configured part bandwidth based on the CSI-RS taken in this part of bandwidth, and can get CQI-value for a portion of the bandwidth. UE may report a set of CQI-values for a set of parts bandwidth configured for UE.

[0061] For podpolanie feedback UE can perform the measurement channel for each interest podology frequencies in each configured part bandwidth based on the CSI-RS taken in podolece frequencies. For example, for each configured part bandwidth, UE can perform the measurement channel for each podology frequencies in terms of bandwidth, or for each of the N best podpole frequencies in terms of bandwidth. N can be one or more and can depend on the bandwidth. For example, N can be great for the part of the bandwidth in which UE watching good features of the canal and may be less for part of the bandwidth in which UE watching bad characteristics of the channel. UE can get a set of CQI-values for a set interest podpole frequencies in all configured parts of bandwidth. UE may report this set CQI-values.

[0062] UE can be configured using one or more parts of bandwidth that can jump. At each time interval UE can perform the measurement of the channel for part(s) of bandwidth configured for this time frame. UE can perform the measurement of the channel for different parts of bandwidth for different time intervals with a jump of frequencies. In one scheme typical for cell CSI-RS-jump can be selectively disabled, for example, by setting recording cell ID in the initial number of a jump of a frequency equal to the total value of default. In one scheme, several hundred can jump together, which can be useful in order to maintain CoMP-technologies such as joint transfer of a number of transmission sites.

[0063] UE can tell absolute and/or differential CQI-values. Absolute CQI-value can pass CQI solely on the basis of this value. Differential CQI may transfer the difference in CQI between the current CQI and the support of CQI. Reference CQI can be designed for the preceding time interval or other podology frequencies, or another part of the bandwidth, etc. UE can tell absolute CQI-values for some of the time intervals and/or some parts of bandwidth or podpole frequencies. UE can tell differential CQI-values for some other time intervals and/or some other parts of bandwidth or podpole frequencies.

[0064] For clarity, the message CQI described above. The circuit described in this document may be applicable for all types of feedback information relating to channels, such as RI, CQI, PMI, CDI, etc.

[0065] In one scheme, honeycomb can pass CSI-RS without prior encoding, for example, from each antenna port configured to send CSI-RS. In another scheme, honeycomb can pass CSI-RS with precoded. This scheme can be, in particular applies to private eNB (HeNB), because each own eNB can be associated with only one UE or with several UE. Honeycomb can pass CSI-RS with advanced encoding, for example, similar to the data, in order to promote more efficient canal measurement and feedback that can account for the different scenarios interference. In one scheme, honeycomb can selectively transmit CSI-RS with or without prior encoding. For example, honeycomb can initially send CSI-RS without prior encoding and can take the feedback related to the channels from one or more UE. Honeycomb can then determine the appropriate matrix preliminary coding on the basis of feedback information relating to channels from all UE and can pass CSI-RS with advanced coding on the basis of preliminary matrix encoding.

[0066] Honeycomb (for example, the scheduler for cell) can identify you, send CSI-RS with or without prior encoding. This decision may be transparent to the UE, which may not need to know a pre-coded CSI-RS or not. UE can perform the measurement channel on CSI-RS with or without prior encoding and can provide information feedback concerning channels in cell. Honeycomb can interpret the information feedback related to channels, taking into account the way that is passed CSI-RS (for example, with or without prior encoding).

[0067] Fig. 5 shows a diagram of the process of 500 to perform measurement of the channel and the formation of the message. The process 500 can be made by UE (as described below) or by some other object. UE can identify at least one part bandwidth configured for UE, each part bandwidth covers at least one podporou frequency from many podpole frequency (phase 512). UE can take the first reference signal (for example, CRS) of cells (phase 514). UE can also take the second reference signal (for example, CSI-RS) of cells (phase 516). The second reference signal can be transmitted less often than the first reference signal through cell. The second reference signal can also be passed from a larger number of antenna ports than the first signal, and/or to a smaller number of items resources than the first signal, each podkata, which passed the first and second reference signals. The second reference signal can also be transmitted with or without prior coding through cell.

[0068] UE can determine the feedback related to the channels, at least for one part of bandwidth based on the second reference signal (phase 518). UE can determine the feedback related to the channels without using the first reference signal, or optionally, on the basis of the first reference signal. Feedback relating to the channels may contain CQI, RI, PMI, CDI, some other information, or a combination of the above. UE can send feedback information relating to the channels, at least for one part of the bandwidth in vmbo (phase 520). UE can then accept the data transferred by the honeycomb in UE, on the basis of feedback information relating to channels (phase 522).

[0069] At one stage layout 518, UE can determine the feedback related to the channels (for example, CQI-value), for all, at least in one part of the bandwidth configured for UE. In another scheme, UE can determine the feedback related to channels, each at least one part of the bandwidth configured for UE. In another scheme, UE can determine the feedback related to channels, each of one or more podpole frequencies in each of at least one part of the bandwidth configured for UE. One or more podpole frequencies in each part of the bandwidth may include (i) all podology frequencies in terms of bandwidth, or (ii) N best podpole frequencies in terms of bandwidth, where N may be one or more. UE can also determine the feedback related to the channels on the basis of combination regimens.

[0071] In another scheme, the first set of one or more parts of bandwidth can be set for the cell. In another scheme, the first set can be set to a different cell. For example, UE within covering A cell and having a honeycomb B as neighboring cells can have the same set of parts of bandwidth that can be configured for honeycomb B. Second reference signal (or CSI-RS) B cell can observe a strong interference from cell A. UE within coverage B cell can measure the second reference signal B cell throughout the bandwidth of the system. UE within covering A cell can measure the second reference signal B cell for a set of parts bandwidth configured for cell B, which may have less interference from cell A. First set of one or more parts of bandwidth can be set for cells and groups UE, which may include UE that have different honeycomb as the strongest or the servicing cell.

[0072] UE can also get at least one extra set of one or more parts of bandwidth applicable for UE. For example, the first set can be characteristic of the UE, and the second set can be specific to a service cell or neighboring cells. As another example, each of the first set and at least one additional set can be designed for different cells. In any case, at least one part bandwidth configured for UE, in addition may include one or more parts of the bandwidth of at least one extra set.

[0073] For all the schemes listed above, at least one part bandwidth configured for UE, may have less interference, at least from one another cell, than the rest of the bandwidth. In one scheme, UE can take the second reference signal is transmitted via the bandwidth of the system through the cell, and can determine the feedback related to channels, only for bandwidth part of the system, which can match at least one part of the bandwidth configured for UE. In one scheme, UE can identify at least one podkar and/or one or more parts of bandwidth with reduced interference, at least from the same site. UE can determine the feedback related to the channels, at least for one part of bandwidth based on the second reference signal received at least one podkata, and/or one or more parts of bandwidth with reduced interference, at least from the same site.

[0074] UE can determine and report information feedback relating to the channels, at least for one part of bandwidth, which can be the bandwidth part of the system, as described above. UE can evaluate channel for the whole or part of the bandwidth of the system.

[0075] Fig. 6 shows the scheme of the device 600 to perform measurement of the channel and message. The device 600 includes module 612 to determine, at least one part bandwidth configured for UE, each part bandwidth covers at least one podporou frequency from many podpole frequency module 614, to take the first reference signal from the cell, module 616 to take the second reference signal from the cell, and the second reference signal is transmitted less often, the first reference signal, via cell, module 618 to determine the feedback related to the channels, at least for one part of bandwidth based on the second reference signal module 620 to send feedback information relating to the channels, at least for one part of the bandwidth in the honeycomb, and module 622 to accept the data transferred by the honeycomb in UE, on the basis of feedback information relating to the channels.

[0076] Fig. 7 shows the diagram of the process of 700 to support communication. The process of 700 can be run through cells (as described below) or by some other object. Honeycomb can pass the first reference signal (for example, CRS) in the first set of podkatov (phase 712). Honeycomb also can pass the second reference signal (for example, CSI-RS) in the second set of podkatov (phase 714). Honeycomb can pass the second reference signal less often than the first reference signal. Honeycomb also can pass the second reference signal from a larger number of antenna ports and/or fewer elements resources than the first signal, each podkata, which passed the first and second reference signals. Honeycomb also can pass the second reference signal with or without prior encoding.

[0077] Honeycomb can take the feedback related to the channels of the UE (phase 716). Feedback relating to the channels may be determined on the basis of the second reference signal by UE, at least for one part bandwidth configured for UE. Each part of the bandwidth can cover at least one podporou frequency from many podpole frequencies.

[0078] Honeycomb can transfer data in UE based on feedback information relating to the channels received from UE (phase 718). In one scheme, honeycomb can get CQI of feedback information relating to channels, identify at least one scheme modulation and coding (MCS) based on the CQI and process, at least one data flow on the basis of at least one MCS. In another scheme, honeycomb can get PMI of feedback information relating to channels, identify at least one matrix pre-based encoding of PMI and pre-encode at least one data flow on the basis of at least one matrix preliminary coding. Honeycomb can also process data based on the feedback information relating to the channels and other means.

[0079] In one scheme, honeycomb can reduce transmission (for example, not to transfer or to reduce its transmit power level to a lower level) in one or more parts of bandwidth or in one or more podkata, or one or more parts of bandwidth in one or more podkata to reduce interference, at least for one another second reference signal, at least from one another cell. In one scheme, part of the bandwidth and/or podkata in which you can reduce the transmission can be static or semi-static configured to cell. In another scheme, honeycomb can identify at least one UE watching strong interference from a cell, and can reduce transmission in response to this definition.

[0080] Fig. 8 shows the diagram of the device 800 to support communication. The device 800 includes module 812 to pass the first reference signal in the first set of podkatov, module 814 to pass the second reference signal in the second set of podkatov, and the second reference signal passed less often than the first signal, the module 816, to accept feedback information relating to the channels of the UE, and feedback related to the channels is determined on the basis of the second reference signal by UE, at least for one part bandwidth configured for UE, and module 818 to transmit data in UE based on feedback information relating to the channels received from UE.

[0081] Fig. 9 shows the diagram of the process 900 to support communication. The process 900 can be run through cells (as described below) or by some other object. Honeycomb (for example, femtocell) can pass a reference signal (for example, CSI-RS) with advanced encoding (phase 912). Honeycomb can take the feedback related to the channels of the UE (phase 914). Feedback relating to the channels may be determined on the basis of the reference signal by UE, at least for one part bandwidth configured for UE, each part bandwidth covers at least one podporou frequency from many podpole frequencies. Honeycomb can transfer data in UE based on feedback information relating to the channels received from UE, and with precoded made to the reference signal (phase 916).

[0082] Fig. 10 shows the diagram of the device 1000 to support communication. The device includes 1000 a module 1012 to pass the reference signal with advanced encoding module 1014, to accept feedback information relating to the channels of the UE, and feedback related to the channels is determined on the basis of the reference signal by UE, at least for one part bandwidth configured for UE, and module 1016 to transmit data in UE based on feedback information relating to the channels received from UE, and with precoded made to the reference signal.

[0083] Modules in Fig. 6, 8 and 10 may contain processors, electronic devices, hardware devices, electronic components, logic circuits, memory devices, software codes, firmware codes etc. or any combination of the above.

[0084] Fig. 11 shows the block diagram for the scheme of the base station/eNB 110 and UE 120, which can be one of the eNB and one of the UE in Fig. 1. ENB 110 may contain T antenna 1134a-1134t, and UE can contain 120 R antennas 1152a-1152r, where, in General, T>=1 and R>=1.

[0085] eNB 110, transmitting processor 1120 can receive data from a source 1112 data for one or more UE, process (for example, to encode and modulate) data for each UE on the basis of one or more of modulation and coding (MCS), the UE, and to provide data characters for all UE. Transmitting processor 1120 can also process control information and to provide control characters. Transmitting processor 1120 can also form the supporting characters for CRS, CSI-RS and/or other reference signals for each cell, supported by eNB 110. TX MIMO-1130 CPU can pre-encode data characters, control characters, and/or the supporting characters (if applicable) and may provide T output streams of characters in T modulators (MOD) 1132a-1132t. Each modulator 1132 can process its output stream of characters (for example, for OFDM and so on)to get the flow of output samples. Each modulator 1132 additionally can handle (for example, to convert to analog form, strengthen, filter, and convert with increasing frequency output stream samples and generate signal downlink. T signals downlink from modulators 1132a-1132t can be transmitted via T antenna 1134a-1134t respectively.

[0086] UE 120, R antennas 1152a-1152r can receive signals downlink from eNB 110, and each antenna 1152 can provide the received signal into the associated demodulator (DEMOD) 1154. Each demodulator 1154 may lead to the required parameters (for example, filter, amplify, convert with decreasing frequency and sifrovat) received signal to get sample, and additionally can handle the sample (for example, for OFDM and so on)to get the received symbols. Each demodulator 1154 can provide the received text data in MIMO detector 1160 and taken to provide the supporting characters in channel processor 1194. Channel processor 1194 can extract the assessment of the channel for wireless channel eNB 110 in UE 120 on the basis of the accepted reference symbols for CRS. Channel processor 1194 can also perform the measurement of the channel for a set of parts bandwidth configured for UE 120, on the basis of the accepted reference symbols for CSI-RS. Channel processor 1194 can provide (i) assessment of the channel obtained on the basis of CRS, MIMO detector 1160, and (ii) the results of the measurement channel based on the CSI-RS in the controller/processor 1190. MIMO detector 1160 can perform MIMO-detect received data characters (if applicable) based on the evaluation of the canal and may provide discovered characters. The receiving processor 1170 can handle (for example, to demodulate and decode) found the characters and provide the decoded data for UE 120 V receiver 1172 data.

[0087] UE 120 can perform the measurement of the channel and to identify information feedback relating to the channels as described above. Feedback relating to the channels, and the data from the source 1178 data can be processed (for example, encoded and modulated) by sending processor 1180, spatial be processed via TX MIMO-processor 1182 (if applicable) and further processed by modulators 1154a-1154r to form R signals ascending line of communication, which may be transmitted through the antenna 1152a-1152r. In eNB 110, signal uplink connection from UE 120 can be made through antennas 1134a-1134t, processed through demodulators 1132a-1132t, discovered by MIMO-detector 1136 (if applicable) and further processed (for example, to demobilizovalsya and decoded) by the receiving processor 1138 to restore the feedback related to channels and the data is sent through UE 120. Controller/processor 1140 can control data transmission in UE 120 on the basis of feedback information relating to the channels. The recovered data can be provided in the receiver 1139 data.

[0088] Controllers/processors 1140 and 1190 can guide the work eNB 110 and UE 120 respectively. Processor 1190 and/or other processors and modules in UE 120 can perform or to direct the process 800 Fig. 5 and/or other processes for the technologies described in this document. Processor 1140 and/or other processors and modules in eNB 110 can perform or to direct the process 700 in Fig. 7, the process 900 in Fig. 9 and/or other processes for the technologies described in this document. Storage device 1142 and 1192 can save the data and program codes for eNB 110 and UE 120 respectively. The scheduler 1144 can DISPETCHERSKIJJ UE 120 and/or other UE data downlink and/or ascending line of communication on the basis of feedback information relating to the channels received from all UE.

[0089] Experts in the art must understand that the information and signals can be displayed using any of many different technologies. For example, data, instructions, commands, information, signals, bits, characters and symbols pseudostomous sequence that might be presented as an example throughout the description above, can be represented by means of voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination of the above.

[0091] Various illustrative logical blocks, modules and schema described in connection with the disclosure of the essence in this document, may be exercised or performed by the processor General-purpose, digital signal processor (DSP), specialized integrated circuit (ASIC), user-programmable matrix BIS (FPGA) or other programmable logic devices, discrete logic element or transistor logic, discrete hardware components, or any combination of the above-mentioned designed to perform described in this document function. A General-purpose processor can be a microprocessor, but in the alternative, the processor can be any of the traditional CPU, controller, a microcontroller or a state machine. The processor can also be implemented as a combination of computing devices, for example, the combination of DSP and microprocessor, many microprocessors, one or more microprocessors together with the core DSP or any other configuration.

[0092] Stages of method or algorithm described in connection with the disclosure of the essence in this document can be implemented directly in hardware, software module, enforced by the processor, or a combination of the above. Software module can be posted permanently in memory RAM, flash memory, memory ROM, memory, EPROM, EEPROM memory, registry, hard disk, removable drive, CD or any other form of media, data storage, known in the art. Typical media storage is connected to the processor, and the processor can read and write information to the media storage. Alternatively, media storage can be built into the processor. The processor and the media data storage can be accommodated in the ASIC. ASIC can permanently be placed in the user terminal. Alternatively, the processor and the media data storage can be placed as discrete components in the user terminal.

[0093] In one or more approximate schemes described features can be implemented in hardware, software, firmware, or any combination of the above. When implemented in software, functions can be stored or transferred one or more instructions or code is read by the processor data carrier. Read by the processor carriers include both computer media data storage and communication environment, which includes any medium that facilitates the movement of a computer program from one place to another. Media storage can be any available media, to which you can access through a computer of General purpose or special purpose. As an example, and not limitation, those read by the processor carriers may contain RAM, ROM, EEPROM, CD-ROM or other storage device for optical drives, the storage device on a magnetic disk or other magnetic storage devices or any other media that can be used to transfer or save the desired tool code in the form of instructions or data structures, and to which you can access through a computer of General purpose or special purpose or processor for General purpose or special purpose. Also, any connection accurate to refer to a machine-readable carrier. For example, if the software is transferred from a web site, server, or another remote source using coaxial cable, optical fiber cable, twisted pair cable, digital subscriber line (DSL) or wireless technologies, such as infrared, radio and microwave environment, coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies, such as infrared, radio and microwave environment included in the definition of the media. Disk and disk (disc) when used in this document include the compact disc (CD), a laser disk, optical disk, digital versatile disc (DVD), floppy drive and a Blu-Ray disc, the drive (disk) usually plays the data magnetically, while discs (disc) usually plays the optical data with the help of lasers. Combinations of these should also include a machine-readable (read by the processor) media.

[0094] Foregoing description of the disclosure provided in order to enable any person skilled in the art to make or use the entity expansion. Various modifications in the disclosure of an entity should be obvious to a person skilled in the art, as described in this document General principles can be applied to other options without derogating from the nature and volume of the disclosing entity. Thus, the disclosure of an entity does not have the intention to be limited described in this document examples and diagrams, and must satisfy the widest extent consistent with the principles and new features disclosed in this document.

1. Way wireless communication containing the time that: define at least one part bandwidth configured for subscriber units (UE), with each part bandwidth covers at least one podporou frequency from many podpole frequencies; take the first reference signal from the cell; take the second reference signal from the cell, and the second reference signal is transmitted less often than the first signal, via cell; and determines what information feedback relating to the channels, at least for one part of the band bandwidth based on the second reference signal.

2. The method according to claim 1, wherein the first reference signal contains typical cell reference signal (CRS), and the second reference signal contains the reference signal with spatial information channel (CSI-RS).

3. The method according to claim 1, wherein the step of determining feedback information relating to channels, is that determine the feedback related to channels, all from at least one part of the bandwidth configured for UE.

4. The method according to claim 1, wherein the step of determining feedback information relating to channels, is that determine the feedback related to channels, each at least one part of the bandwidth configured for UE.

5. The method according to claim 1, wherein the step of determining feedback information relating to channels, is that determine the feedback related to channels, each of one or more podpole frequencies in each of at least one part of the bandwidth configured for UE.

6. The method according to claim 5, in which one or more podpole frequencies in each part of the bandwidth includes all podology frequencies in terms of bandwidth.

7. The method according to claim 5, in which one or more podpole frequencies in each part of the bandwidth includes N best podpole frequencies in terms of bandwidth, where N is equal to one or more.

8. The method according to claim 1, wherein the step of accepting the second reference signal is that accept second reference signal is transmitted via the bandwidth of the system through the cells, and in which the definition stage feedback information relating to channels, is that determine the feedback related to channels, based on the second reference signal only for bandwidth part of the system that complies with at least one part of the bandwidth.

9. The method according to claim 1, further comprising stages, which are: define at least one podkat with reduced interference, at least from one another cell; and determines what information feedback relating to the channels, at least for one part of bandwidth based on the second reference signal received at least one podkate.

10. The method according to claim 1, additionally contains a stage at which receive a set of one or more parts of bandwidth applicable for UE, with at least one part bandwidth configured for UE, includes one or more parts of bandwidth in the set.

11. The method according to claim 10, in which the set is defined on the basis of a jump of frequencies and includes one or more parts of bandwidth in different parts of the bandwidth of the system for different time intervals.

12. The method according to claim 10, in which the set includes one part of the bandwidth in each time interval and cycles all parts of bandwidth for different time intervals.

13. The method of claim 10, wherein is the set includes many parts of bandwidth, with equal frequency.

14. The method of claim 10, wherein is the set includes many parts of bandwidth with different periodicity.

15. The method of claim 10, wherein is the set specifically for UE.

16. The method of claim 10, wherein is the set for the above-mentioned cells or other cells.

17. The method according to claim 10, in which one or more parts of bandwidth in the set are less interference from the mentioned cells or at least from one another cell.

18. The method according to claim 10, additionally contains a stage at which receive at least one additional set of one or more parts of bandwidth applicable for UE, with each of the mentioned set and at least one additional set is designed for excellent cells, and at least one part bandwidth configured for UE, additionally includes one or more parts of the bandwidth of at least one extra set.

19. The method according to claim 1, wherein feedback related to channels, contains a quality indicator channel (CQI), or indicator rank (RI), or indicator matrix preliminary coding (PMI), or direction indicator channel (CDI), or any combination of the above.

20. The method according to claim 1, wherein the second reference signal is transmitted using pre-coding through cell.

22. Wireless communication containing: a tool to identify at least one part of the bandwidth configured for subscriber units (UE), with each part bandwidth covers at least one podporou frequency from many podpole frequencies; means for receiving the first reference signal from the cell; a means for reception of the second reference signal from the cell, and the second reference signal is transmitted less often than the first signal, via cell; and a tool to determine the feedback information relating to channels at least for one part of bandwidth based on the second reference signal.

23. The device according to article 22, which is a tool to determine the feedback information relating to channels, is a tool for determining the feedback information relating to channels, all from at least one part of the bandwidth configured for UE, or for each of at least one part of the bandwidth configured for UE, or for each of one or more podpole frequencies in each of at least one part of the bandwidth configured for UE.

24. The device according to article 22, additionally contains a tool to obtain a set of one or more parts of bandwidth applicable for UE, with at least one part bandwidth configured for UE, includes one or more parts of bandwidth in the set.

25. The device according to article 22, additionally contain: a tool to send feedback information relating to the channels, at least for one part of the bandwidth in the cell; and the means for receiving data transferred by the honeycomb in UE, on the basis of feedback information relating to the channels.

26. Wireless communication containing: at least one processor, made with the possibility to define at least one part bandwidth configured for subscriber units (UE), with each part bandwidth covers at least one podporou frequency from many podpole frequencies, take the first reference signal from the cell, take the second reference signal from the cell, and the second reference signal is transmitted less often than the first reference signal by cells, and to identify information feedback relating to the channels, at least for one part of bandwidth based on the second reference signal.

27. Read by the CPU media storage that contains: how to encourage at least one processor to define at least one part bandwidth configured for subscriber units (UE), with each part bandwidth covers at least one podporou frequency from many podpole frequencies; instructions for motivation, at least one processor to take the first reference signal from the cell; instructions for motivation, at least one processor to take the second reference signal from the cell, and the second reference signal is transmitted less often than the first signal, via cell; and instructions for motivation, at least one processor to determine the feedback related to the channels, at least for one part of bandwidth based on the second reference signal.

28. Way wireless communication containing the time that: pass the first reference signal in the first set of podkatov; passed the second reference signal in the second set of podkatov, and the second reference signal is transmitted less often than the first reference signal; and accept feedback information relating to the channels of subscriber units (UE), and feedback related to the channels is determined on the basis of the second reference signal by UE, at least for one part bandwidth, configured for UE, each part bandwidth covers at least one podporou frequency from many podpole frequencies.

29. The method according to p, in which the reference signal contains typical cell reference signal (CRS), and the second reference signal contains the reference signal with spatial information channel (CSI-RS).

30. The method according to p in which the second reference signal is transmitted from a larger number of antenna ports than the first reference signal.

31. The method according to p in which the second reference signal is transmitted to a smaller number of items resources than the first signal, each podkata, which passed the first and second reference signals.

32. The method according to p in which the second reference signal is transmitted using pre-coding.

33. The method according to p, additionally contains a stage at which transmit data in UE based on feedback information relating to the channels received from UE.

34. The method according to p in which the phase of data transmission in UE contains the time that: get a quality indicator channel (CQI) of feedback information relating to channels, define at least one scheme modulation and coding (MCS) based on CQI, and treat at least one data flow on the basis of at least one MCS.

35. The method according to p in which the phase of data transmission in UE contains the time that: get the led matrix preliminary coding (PMI) of feedback information relating to channels, define at least one matrix preliminary coding based on PMI, and carry out a preliminary coding, at least one data stream based on at least one matrix preliminary coding.

36. The method according to p, additionally contains a stage at which reduce the transmission of one or more parts of bandwidth or in one or more podkata, or one or more parts of the bandwidth in one or more podkata through cells to reduce interference, at least for one another second reference signal, at least from one another cell.

37. The method according to p, additionally contains the time that: define at least one UE watching strong interference from cell; and reduce the transmission by cells in response to the definition of at least one UE watching strong interference from cell.

38. Wireless communication containing: a tool for communicating the first reference signal in the first set of podkatov; a means for transmitting the second reference signal in the second set of podkatov, and the second reference signal is transmitted less often than the first reference signal; and a means to receive feedback information relating to channels of subscriber units (UE), and feedback related to the channels is determined on the basis of the second reference signal by UE, at least for one part bandwidth configured for UE, each part bandwidth covers at least one podporou frequency from many podpole frequencies.

39. The device § 38, which means to transfer the second reference signal is a tool to send a second reference signal from a larger number of antenna ports than the first signal, or to a smaller number of items resources than the first signal, each podkata, which passed the first and second calibration signals, or using a pre-coding, or based on any combination of the above.

40. The device § 38, additionally contains a tool to reduce the transmission of one or more parts of bandwidth or in one or more podkata, or one or more parts of the bandwidth in one or more podkata through cells to reduce interference, at least for one another second reference signal, at least from one another cell.

41. Wireless communication containing: at least one processor, made with the possibility to transfer the first reference signal in the first set of podkatov, pass the second reference signal in the second set podkatov, and the second reference signal is transmitted less often than the first signal, and receive feedback information relating to the channels of subscriber units (UE), and feedback related to the channels is determined on the basis of the second reference signal by UE, at least for one part bandwidth configured for UE, each part bandwidth covers at least one podporou frequency from many podpole frequencies.

42. Read by the CPU media storage that contains: how to encourage, at least one processor to send the first reference signal in the first set of podkatov; instructions for motivation, at least one processor to send a second reference signal in the second set of podkatov, and the second reference signal is sent less frequently than the first reference signal; and guidance to encourage at least one processor to receive feedback information relating to the channels of subscriber units (UE), and feedback related to the channels is determined on the basis of the second reference signal by UE, at least for one part of the bandwidth configured for UE, each part bandwidth covers at least one podporou frequency from many podpole frequencies.

43. Way wireless communication containing the time that: pass the reference signal using a pre-coding; and accept feedback information relating to the channels of subscriber units (UE), and feedback related to the channels is determined on the basis of the reference signal by UE, at least for one part bandwidth configured for UE, each part bandwidth covers at least one podporou frequency from many podpole frequencies.

44. The method according to item 43, additionally contains a stage at which transmit data in UE based on feedback information relating to the channels received from UE, and using pre-coding, executed for reference signal.

45. The method according to item 43, where the reference signal is transmitted using pre-coding through its own base station.

46. Wireless communication containing: a tool for communicating the reference signal using a pre-coding; and a means to receive feedback information relating to the channels of subscriber units (UE), and feedback related to the channels is determined on the basis of the reference signal by UE, at least for one part bandwidth configured for UE, each part bandwidth covers at least one podporou frequency from many podpole frequencies.

47. Wireless communication containing: at least one processor, made with the possibility to transfer the reference signal using a pre-coding and receive feedback information relating to the channels of subscriber units (UE), and feedback related to the channels is determined on the basis of the reference signal by UE, at least for one part bandwidth configured for UE, each part bandwidth covers at least one podporou frequency from many podpole frequencies.

48. Read processor media storage that contains: how to encourage at least one processor to send the reference signal using a pre-coding; and guidance to encourage at least one processor to receive feedback information relating to the channels of subscriber units (UE), and feedback related to the channels is determined on the basis of the reference signal by UE, at least for one part bandwidth configured for UE, each part bandwidth covers at least one podporou frequency from many podpole frequencies.