WO2011074816A2 - 채널정보를 송수신하는 방법과 이를 이용하는 단말 및 기지국 - Google Patents
채널정보를 송수신하는 방법과 이를 이용하는 단말 및 기지국 Download PDFInfo
- Publication number
- WO2011074816A2 WO2011074816A2 PCT/KR2010/008685 KR2010008685W WO2011074816A2 WO 2011074816 A2 WO2011074816 A2 WO 2011074816A2 KR 2010008685 W KR2010008685 W KR 2010008685W WO 2011074816 A2 WO2011074816 A2 WO 2011074816A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- information
- subband
- channel
- subband group
- component carrier
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0037—Inter-user or inter-terminal allocation
- H04L5/0039—Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0096—Indication of changes in allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
Definitions
- the present invention relates to a wireless communication system, and to a method for transmitting and receiving channel information through carrier aggregation, and a terminal and a base station using the same.
- the terminal from the terminal to the base station through the uplink so as to know the channel state of the downlink Channel information that must be informed is also increasing.
- the present invention relates to a wireless communication system, and provides a method for transmitting and receiving channel information through carrier aggregation, and a terminal and a base station using the same.
- the present invention also relates to a wireless communication system, and to provide a method for transmitting and receiving channel information by forming a group of subbands including at least one carrier and a terminal and a base station using the same.
- the present invention also relates to a wireless communication system, and provides a method for performing a group update request and a group update for at least one or more subbands, and a terminal and a base station using the same.
- the present invention also provides a method and apparatus for transmitting and receiving channel information that guarantees backward compatibility in transmitting channel information through carrier aggregation.
- the present invention also provides a method and apparatus for efficiently transmitting and receiving channel information to be transmitted by simplifying a control channel in transmitting channel information through carrier aggregation.
- the method for receiving channel information is a method for receiving channel information by a base station in a wireless communication system using at least one component carrier, channel information from a user terminal Receiving, generating a subband group for one or more subbands included in the at least one CC by using the received channel information, and transmitting the information about the generated subband group to the user terminal. And transmitting channel information of each subband corresponding to the subband group from the user terminal through a control channel, wherein the subband group has at least one subchannel having the same channel information.
- a band wherein the information on the subband group includes: And at least one of a total number of generated subband groups, subband group identification information for identifying each subband group, and subband identification information for identifying subbands included in each subband group. It is done.
- a method for transmitting channel information includes transmitting channel information by a user terminal in a wireless communication system using at least one component carrier, wherein the at least one subcarrier included in the at least one component carrier is included. Transmitting channel information for bands to a base station, receiving information about a grouped subband group for one or more subbands included in the at least one component carrier from the base station, and the at least one subband And transmitting channel information of each subband of the subbands to the base station through a control channel using the channel information of each subband as channel information of each subband corresponding to the subband group.
- the group has at least one of the same channel information
- the subband of the subband group the information on the subband group, the total number of the generated subband groups, subband group identification information for identifying each subband group, and subbands included in each subband group And at least one of subband identification information for identifying a band.
- a wireless communication system includes a subband grouping management unit generating a subband group for one or more subbands included in at least one component carrier using channel information received from a user terminal, and And a transmitting / receiving unit which transmits subband grouping information on a subband group to the user terminal, and receives channel information of each subband corresponding to the subband group from the user terminal through a control channel.
- the band group includes at least one subband having the same channel information, and the information on the subband group includes the total number of the generated subband groups and subband group identification information for identifying each subband group. And for identifying subbands included in each subband group.
- probe identification band is characterized in that it comprises one or more.
- a user terminal is a receiver for receiving grouped subband grouping information for one or more subbands included in at least one component carrier from a base station, one or more components included in the at least one component carrier
- a subband channel information measuring unit for measuring channel information on subbands, and subbands including channel information about the one or more subbands as channel information for each group of subbands corresponding to the subband grouping information
- a group channel information measuring unit and a transmitter for transmitting the group information of each subband corresponding to the subband group to the base station through a control channel.
- the present invention has an effect of enabling backward compatibility in transmitting channel information through carrier aggregation.
- the control channel in transmitting channel information through carrier aggregation, by transmitting channel information for each subband group through subband grouping, the control channel is simplified and the resource requirements required for transmission are greatly reduced. It can be effective.
- FIG. 1 is a block diagram schematically showing a wireless communication system to which the present invention is applied.
- FIG. 2 is a diagram schematically illustrating a channel transmission structure in a wireless communication system using a plurality of CCs to which the present invention is applied.
- FIG. 3 shows a conceptual diagram for subband grouping according to the present invention.
- FIG. 4 is a diagram illustrating an example of grouping subbands having the same level according to the present invention.
- FIG. 5 is a diagram illustrating a flow of receiving channel information of grouped subbands by a base station according to the present invention.
- FIG. 6 is a diagram illustrating a flow of transmitting channel information of grouped subbands by a terminal according to the present invention.
- FIG. 7 is a diagram schematically illustrating a transmission structure of subband group information according to the present invention.
- FIG. 8 is a diagram schematically illustrating a transmission structure of a subband group update request according to the present invention.
- FIG. 9 is a diagram illustrating a structure of a base station for transmitting subband group information grouped according to the present invention.
- FIG. 10 is a diagram illustrating a structure of a terminal for transmitting channel information of grouped subbands according to the present invention.
- FIG. 1 is a diagram illustrating a wireless communication system 100 for transmitting channel information according to an embodiment of the present invention.
- a wireless communication system is a system for providing various communication services such as voice and packet data.
- a wireless communication system includes a user equipment (UE) 10 and a base station 20 (BS).
- UE user equipment
- BS base station 20
- Terminal 10 is a generic concept that means a user terminal in wireless communication, WCDMA, UE (User Equipment) in LTE, HSPA, etc., as well as MS (Mobile Station), UT (User Terminal) in GSM ), SS (Subscriber Station), wireless device (wireless device), etc. should be interpreted as including the concept.
- a base station 20 or a cell generally refers to a fixed station communicating with the terminal 10 and includes a Node-B, an evolved Node-B, and a Base Transceiver. It may be called other terms such as System, Access Point.
- the base station 20 or the cell is to be interpreted in a comprehensive sense of a part of the area covered by the BS (Base Station) in the CDMA, Node-B of the WCDMA, etc., megacell, macrocell, micro The term encompasses various coverage areas such as cell, picocell, and femtocell.
- the terminal 10 and the base station 20 are two (uplink or downlink) transmission and reception subjects used to implement the technology or the technical idea described in the present invention, which are used in a generic sense and are specifically referred to in terms or words. It is not limited by.
- Uplink means a method for transmitting and receiving data to the base station 20 by the terminal 10
- Downlink means a method for transmitting and receiving data to the terminal 10 by the base station 20.
- CDMA code division multiple access
- TDMA time division multiple access
- FDMA frequency division multiple access
- OFDMA orthogonal frequency division multiple access
- OFDM-FDMA OFDM-TDMA
- OFDM-CDMA OFDM-CDMA
- the uplink transmission and the downlink transmission may use a time division duplex (TDD) scheme that is transmitted using different times, or may use a frequency division duplex (FDD) scheme that is transmitted using different frequencies.
- TDD time division duplex
- FDD frequency division duplex
- One embodiment of the present invention is an asynchronous wireless communication and CDMA evolving into Long Term Evolution (LTE) and Long-Term Evolution-Advanced (LTE-A) (LTE-A) through GSM, WCDMA, HSPA, and CDMA , Resource allocation, such as in the field of synchronous wireless communications evolving to CDMA-2000 and UMB.
- LTE Long Term Evolution
- LTE-A Long-Term Evolution-Advanced
- GSM Global System for Mobile communications
- WCDMA Long-Term Evolution-Advanced
- HSPA High Speed Packet Access
- CDMA Code Division Multiple Access
- Resource allocation such as in the field of synchronous wireless communications evolving to CDMA-2000 and UMB.
- the present invention should not be construed as being limited or limited to a specific wireless communication field, but should be construed as including all technical fields to which the spirit of the present invention can be applied.
- the present disclosure discloses a channel information transmission scheme for reducing channel information that is increased due to the use of at least one component carrier.
- a wireless communication system providing a method for transmitting channel information disclosed herein, at least one component carrier is used, the terminal 10 measures channel information for each subband for each component carrier, and the channel measured for each subband. And transmitting the channel information to the base station 20 for each subband group generated based on the information.
- the channel information for each subband group (hereinafter referred to as 'channel channel information') is transmitted.
- 'channel information for each subband group') is transmitted.
- the uplink resource requirement required for the terminal 10 to inform the base station 20 through uplink (UL) may be greatly reduced.
- each terminal 10 may measure channel information for each subband for each component carrier.
- the terminal 10 transmits the channel information for each subband group to the base station through the control channel for each subband group grouped into one or more subbands of one or more CCs based on the channel information measured for each subband. 20). That is, the present specification is intended to include a process and configuration for transmitting channel information for each subband group by grouping a plurality of subbands in one component carrier or grouping a plurality of subbands included in one or more component carriers. do.
- control channel may be, for example, a physical uplink control channel (PUCCH) in 3GPP LTE / LTE-A.
- PUCCH physical uplink control channel
- the channel information measured for each subband mentioned above is, for example, a channel quality indicator (CQI) (hereinafter referred to as "CQI”) and a precoding matrix indicator (PMI). ), Rank indicator (hereinafter referred to as "RI”), signal-to-noise ratio (SNR) and frame error rate (FER), etc. It may include one or more of the.
- CQI channel quality indicator
- PMI precoding matrix indicator
- RI Rank indicator
- SNR signal-to-noise ratio
- FER frame error rate
- the present invention is not limited to the exemplary embodiments of the channel information, and information for measuring various characteristics and qualities of the channel or providing a measured result according to the implementation of the present invention (for example, the noise level of the channel).
- Instruction information (indicator) corresponding to the indication information, error information generated in the channel, channel state information, or channel quality measurement information (indicator)) may be included in one embodiment of the channel information of the present specification.
- the base station 20 receives channel information for each subband for each component carrier from the terminal 10 and based on channel information for each subband for each component carrier.
- the subbands may be grouped to generate a subband group, the subband grouping information may be transmitted to the terminal 10, and the subband group-specific channel information may be received from the terminal 10.
- the "subband grouping" performed by the base station 20 based on "channel information for each subcarrier for each component carrier" received from the terminal 10 is used for subband grouping by connecting subbands in another component carrier.
- Inter-Carrier subband grouping, Intra-Carrier subband grouping for subband grouping by concatenating subbands in the same component carrier, or Inter-Carrier subband grouping and It may be a subband grouping using a complex intra-carrier subband grouping.
- a plurality of subbands are grouped into one subband group, and the plurality of subbands may be i) included in one component carrier (Intra-Carrier) and ii) included in multiple component carriers. (Inter-Carrier), iii) it may be a complex method combining these two methods (Intra-Carrier, Inter-Carrier). In the case of ii) and iii), the channel information of a plurality of CCs is transmitted.
- the "subband grouping information" obtained through such subband grouping is, for example, included in the total number of generated subband groups, subband group identification information for identifying each subband group, and in each subband group. And at least one of subband identification information for identifying the subband.
- the terminal 10 extracts a parameter for subband group update based on subband channel information and subband group channel information for each component carrier, and if it is determined that the parameter exceeds an allowable value, updates the subband group.
- the request information may be generated and transmitted to the base station 20.
- An embodiment of the parameter may be calculated based on a difference between channel information for each subband group and channel information for each subband included in the group.
- the "subband group update request information" transmitted by the terminal 10 to the base station 20 includes information on whether subband grouping is fully valid, information on subband group lists exceeding an allowable value, and subbands included in the subband group list. One or more of the allowable value excess information for each group may be included.
- the base station 20 determines whether to partially or entirely perform subband grouping based on the received subband group update request information. Or perform global subband grouping.
- the terminal 10 includes a subband channel information measuring unit for measuring channel information for each subband for each component carrier, and a subband channel for each component carrier thus measured.
- the subband grouping channel information calculation unit for receiving the subband grouping information from the base station 20 and calculating the channel information for each subband group based on the received subband grouping information and transmitting it to the base station 20;
- a parameter for updating a subband group is extracted, and it is determined whether the extracted parameter is equal to or less than an allowable value. If it is determined that the parameter exceeds the allowable value, the subband group generating subband group update request information and transmitting the same to the base station 20 It may include new management and so on.
- the base station 20 classifies the subbands based on the subband channel information for each component carrier received from the terminal 10 and groups the subbands according to the classified result.
- a subband grouping management unit which generates a subband group and transmits subband grouping information according to the subband grouping to the terminal 10 and receives channel information for each subband group according to the subband grouping information from the terminal 10.
- a channel information receiver for each subband group.
- the wireless communication system including the terminal 10 and the base station 20 according to an embodiment of the present invention described above may be applied to LTE-A, which defines a technology for multi-carrier aggregation.
- LTE-A defines a technology for multi-carrier aggregation.
- a method of transmitting channel information according to another embodiment of the present invention applied to LTE-A will be described with reference to FIGS. 2 to 8.
- Uplink and downlink transmit control information through control channels such as Physical Downlink Control CHannel (PDCCH), Physical Control Format Indicator CHannel (PCFICH), Physical Hybrid ARQ Indicator CHannel (PHICH), and Physical Uplink Control CHannel (PUCCH).
- a data channel is configured such as PDSCH (Physical Downlink Shared CHannel), PUSCH (Physical Uplink Shared CHannel) and the like to transmit data.
- the configuration of the data channel is configured based on a resource block (RB), which is composed of two dimensions of time and frequency.
- RB resource block
- Control information regarding user-specific and service-specific allocation of resources is determined at a higher layer than a physical layer of a serving eNB, and is transmitted and operated through a control channel.
- LTE-A the standard of a single component carrier in LTE is the basis (unit), while the discussion of the combination of several bands having a band smaller than 20 MHz, while the component carrier band having a band of 20 MHz or more We are discussing the issue.
- Carrier Aggregation in LTE-A is basically discussed in consideration of backward compatibility as much as possible based on LTE's basic standard and 5 or more component carriers in uplink and downlink. Is being considered. Among the issues discussed in this carrier aggregation, what is important is how to configure the extension of the control channel and how to configure the data channel as the number of CCs increases.
- One or more component carriers or component carrier pairs in uplink and downlink are referred to as anchor carriers or primary cells or serving cells or special cells. ), There is a component carrier that is initially transmitted, security and authentication information is received, and is controlled for subsequent multicarrier aggregation.
- uplink ACK / NACK ACKnowledgement / Negative ACKnowledgement
- downlink channel information transmission including CQI, PMI and RI.
- the CQI / PMI / RI information is formed by various methods through a physical uplink control channel (PUCCH) and a physical uplink shared channel (PUSCH), which are uplink control channels.
- PUCCH physical uplink control channel
- PUSCH physical uplink shared channel
- CQI information is divided into periodic CQI reporting and aperiodic CQI reporting.
- the aperiodic CQI reporting is transmitted by the PUSCH allocated uplink resources by the base station 20.
- the feedback for the entire band, the feedback for the subband configured by the base station 20, and the terminal 10 CQI information is reported in the same division as the configured subband feedback.
- the size of the subband is determined according to the size of the system band in which the LTE system is configured. If the periodic CQI reporting is performed by the PUCCH, in this case, feedback reporting on the subband configured by the base station 20 is not supported among the three feedback schemes of the PUSCH.
- CQI information is transmitted by PUCCH. It is used to transmit 4 to 13 bits of information in 2 / 2a / 2b format.
- the present invention is not limited to the embodiments of the channel information or the channel state information, and according to the implementation of the present invention, various state information of the channel, for example, characteristics or qualities of the channel may be measured or measured results may be obtained. All information to provide is included in one embodiment of the channel information of the present specification.
- DL CCs downlink component carriers
- DL CCs downlink component carriers
- N downlink component carriers
- UL CC downlink component carriers
- the aforementioned component carrier refers to a component carrier constituting a plurality of component carriers used in a wireless communication system.
- each DL CC includes a data channel such as PDSCH. Meanwhile, each DL CC may or may not include a control channel such as a PDCCH. That is, control channels may be included in all DL CCs among all DL CCs, and control channels such as PDCCH may be included in only some DL CCs.
- Each UL CC includes a data channel such as a PUSCH. Meanwhile, each UL CC may or may not include a control channel such as a PUCCH. That is, control channels may be included in all UL CCs among all UL CCs, and control channels such as PUCCH may be included only in some UL CCs.
- some of the entire DL CCs may optionally include a control channel such as a PDCCH.
- some of the entire UL CC may optionally include a control channel, such as PUCCH.
- an intra-carrier and an inter-carrier are used for a subband (SB), which is a unit that is reported upward. It is characterized by forming a "sub-band group (Sub-Band Group)" by connecting between.
- FIG. 3 shows a conceptual diagram for subband grouping according to the present invention.
- subband 1-1 (SB 1-1) in DL CC # 1, subband 2-1 (SB 2-1) and subband 2-2 (SB in DL CC # 2). 2-2) and subband M-1 (SB M-1) in DL #M are configured in the same subband group.
- subband 2-3 (SB 2-3) in DL CC # 2 is a subband that is not subband grouped with another DL CC.
- the subband group defined in one embodiment of the present invention generally includes a definition of a subband that becomes a unit of channel information such as CQI / PMI / RI information transmitted in uplink defined in LTE / LTE-A. Becomes
- the present invention is not limited to the exemplary embodiments of the channel information, and the information for measuring various characteristics and qualities of the channel or providing the measured result are all ones of the channel information of the present specification. Included in the Examples. That is, the subband group in the present specification means an object that can be represented or reported by a value of one specific channel information.
- subbands that do not form a subband group within the component carrier, which may be considered as a special subband group having one subband number of groups.
- the number of subbands of each component CC of the carrier aggregation may be the same for each carrier set, but may be configured differently, and this may be different for each terminal 10 of a channel characteristic of each component carrier. This is because the band grouping need not be configured to collect uniformly for each component carrier.
- the entirety of one component carrier of a subband group may be defined as a subband.
- the subbands are divided into subband units reported upward for each component carrier or for each component carrier.
- the subbands are divided into subbands in which the state of the channel is determined to be in a semi-static state, and subbands in which the state of the channel changes relatively rapidly over time.
- a channel having a relatively high SNR is distinguished from a low channel. It is possible to group by subbands that are stable and have similar SNR levels, and group by subbands that are stable and have similar SNR levels.
- FIG. 4 is a diagram illustrating an example of grouping subbands having the same level according to the present invention.
- DL CC # 1 includes 10 subbands indicated by subbands 0 to 9
- DL CC # 2 may include five subbands represented by subbands 0 through 4.
- the base station 20 receives channel information for each subband of the DL CC # 1 and the DL CC # 2 feedback or reported from the terminal 10, for example, an SNR level, and then has a subband having the same SNR level as shown in FIG. 4. Can be grouped into one subband group.
- subband 9 of DL CC # 1 and subband 0 of DL CC # 2 have the same SNR level as "1"
- subbands of different component carriers are grouped into the same subband group.
- subbands 3 and 6 of CC # 1 have the same SNR level as "3"
- the subbands of the same component carrier are grouped into the same subband group.
- subbands 3 and 6 of CC # 1 and subband 3 of DL CC # 2 have the same SNR level of "3”
- subbands of the same component carrier and subbands of different component carriers are different.
- One subband group may be formed by mixing.
- FIG. 5 is a diagram illustrating a flow of receiving channel information of grouped subbands by a base station according to the present invention.
- the base station 20 receives channel information for each subband for each component carrier measured by the terminal 10 from the terminal 10 (S500).
- the base station 20 classifies the subbands for each component carrier based on the received channel information for each subband for each component carrier (S502).
- the subband grouping is determined (S5404).
- the determined subband group may include i) one component carrier (Intra-Carrier), ii) multiple component carriers (Inter-Carrier), and iii) these two methods (Intra-Carrier). It can be a complex method that combines Carrier and Inter-Carrier.
- This subband grouping determines, for each terminal 10, a subband group which is determined to decrease the downlink capacity while reducing the transmission load of uplink control information. This does not have to be done for the entire band of the terminal 10, but can be done only for a specific band.
- the relation in which the subband groups are formed is transmitted to the terminal 10 in downlink in the form of subband grouping information (hereinafter referred to as "control information A").
- the subband grouping information, also referred to as control information A, described above is composed of grouping subbands showing similar characteristics by grouping each component carrier. Or information grouped by grouping at least one or more subbands belonging to at least one component carrier having similar characteristics.
- Subband grouping information on the determined subband grouping is transmitted to the terminal 10 (S506).
- the subband group-specific channel information according to the subband grouping information is received from the terminal 10 (S508).
- subbands that do not form a subband group receive channel information for each subband from the terminal 10 in the same manner as before.
- subband group update request information is received from the terminal 10
- the base station 20 may check in which subband group the channel information (in one embodiment: CQI / PMI / RI, etc.) differs, and as subband group update request information. Determine whether to update the subchannel grouping partially or globally, such as in the initialization state. Accordingly, the subband grouping information is updated and the subband grouping information in the form of control information A is known to the terminal 10.
- subband group the channel information in one embodiment: CQI / PMI / RI, etc.
- the present invention is not limited to the embodiments of the channel information or the channel state information, and according to the implementation of the present invention, various state information of the channel, for example, characteristics or qualities may be measured or a measured result may be provided.
- Information for all are included in an embodiment of the channel information of the present specification. That is, the subband group in the present specification means an object that can be represented or reported by a value of one specific channel information.
- One embodiment of the configuration of the base station is configured to perform the process of FIG.
- FIG. 6 is a diagram illustrating a flow of receiving channel information of grouped subbands by a terminal according to the present invention.
- the terminal 10 measures channel information for each subband for each CC (for example, CQI / PMI / RI) (S600). Thereafter, the terminal 10 transmits the measured channel information for each subband per component carrier to the base station 20 (S602). From the initial state by using a predetermined rule or the previous access record of the terminal 10, information received from another base station, information collected from the other terminal 10, information of the initial ramping (ramping) process of the terminal 10, etc. Subband grouping may be started, and in this case, an operation from the subband decision block to the terminal 10 of the base station 20 may proceed.
- the terminal 10 determines whether the subband grouping information is received from the base station 20 (S604), and if received, calculates channel information for each subband group according to the subband grouping information (S606).
- the channel information for each subband group is transmitted to the base station 20 (S608).
- the received subband group may be included in one component carrier (Intra-Carrier), ii) may be included in multiple component carriers (Inter-Carrier), and iii) these two methods (Intra) as described above. It can be a complex method combining Carrier and Inter-Carrier.
- the terminal 10 transmits subband-based channel information (initial embodiment: CQI / PMI / RI information) for each initial component carrier, instead of subbands based on the newly configured subband group. Transmit channel information for each band group.
- the present invention is not limited to the exemplary embodiments of the channel information, and according to the implementation of the present invention, all information for measuring various state information of the channel, for example, characteristics and qualities, or providing a measured result are all viewed. Included in one embodiment of channel information of the specification. That is, the subband group in the present specification means an object that can be represented or reported by a value of one specific channel information.
- the terminal 10 compares channel information for each subband group calculated in step S606 with channel information for each subband for each component carrier measured in step S600 and extracts a parameter for subband group update (S610).
- the extracted parameter may be one of channel information for each subband for each component carrier measured in step 600.
- channel information for each subband group (in one embodiment: CQI / PMI / RI information) is transmitted, channel information for each subband for each subband for each component carrier (for example, CQI) for the formed subband group / PMI / RI information), and compares the information with the subband group channel information (for example, CQI / PMI / RI information) and examines how the two information are different from each other. It may determine whether to update the subband group and inform the base station 20.
- CQI channel information for each subband group
- component carrier for example, CQI
- subband group channel information for example, CQI / PMI / RI information
- the terminal 10 compares the extracted parameter with a tolerance value (S612), and if the parameter exceeds the tolerance value, determines that the pre-generated subband group does not match the current channel state, and requests a group update.
- the information is transmitted to the base station 20 (S614).
- the base station 20 is notified through the subband group update request information (also referred to as control information B).
- the subband group update request information may be determined not only as a CQI / PMI / RI but also as a frame error rate (FER) value calculated based on ACK / NAK information detectable in a downlink data channel associated with the subband group.
- FER frame error rate
- various state information of a channel for example, information for measuring characteristics, qualities, or providing a measured result, are all included in one embodiment of the channel information herein. That is, the subband group in the present specification means an object that can be represented or reported by a value of one specific channel information.
- the subband group update request information may simply consist of information indicating whether or not the subband group is valid, and specifically, how much channel information is included in which subbands of a subband group (eg, CQI / PMI / RI). Etc.) can be configured in the form that tells you.
- step S606 transmit channel information for each subband group to the base station.
- An embodiment of the configuration of the terminal is configured to perform the process of FIG.
- Subband grouping information in the form of control information A described above and subband group update request information in the form of control information B described above may be configured as shown in FIGS. 7 and 8 as an example.
- 7 is a diagram schematically illustrating a transmission structure of subband group information according to the present invention.
- the subband grouping information in the form of control information A is configured according to the case in which the subband grouping information is newly generated and the subband group is released. ) And (b) of FIG. 7.
- the subband grouping information in the case where a subband group is newly generated indicates a portion indicating a generation code indicating generation of a subband group and the total number of newly formed subband groups. And a part for indicating identification information (number) for identifying each subband group and subbands included in each subband group.
- the subband grouping information when the subband group is released includes a portion indicating a release code indicating release of the subband group, a subband group to release, and such a release subband group. It may be composed of a part for indicating identification information (number) for the subband included in the.
- FIG. 8 is a diagram schematically illustrating a transmission structure of a subband group update request according to the present invention.
- the subband group update request information in the form of control information B includes (a) and format of FIG. 8 indicating whether or not all subband groupings are valid, and a parameter for subband group update. 8 (b), which informs the subband group list of the subband group in question by exceeding the allowable value, and the subband group list in question, together with the excess value exceeding the allowable value. It may consist of one of the forms (c).
- the subband grouping information in the form of control information A and the subband group update request information in the form of control information B are control information which do not exist in the existing LTE standard, and a configuration of a new control channel is required for delivery thereof.
- Such a control channel is preferably determined by signaling of a higher layer in an application in which a subchannel group is updated slowly, and a new channel defined in an actual physical layer may be required in an application for faster update.
- connection operations of the base station 20 and the terminal 10 for subband grouping and transmission of channel information including CQI / PMI / RI information reported in uplink and downlink are summarized. Is as follows.
- the terminal 10 transmits channel information for each subband (for example, CQI / PMI / RI) to the base station 20 (S602).
- channel information for each subband for example, CQI / PMI / RI
- the base station 20 receives channel information for each component carrier (for example, CQI / PMI / RI information) from the terminal 10 for each subband, classifies the channel characteristics for each subband, and groups the subbands (S500, S502). , S504).
- the base station 20 transmits the relation in which the subband groups are formed to the terminal 10 in a downlink in the form of subband grouping information (hereinafter referred to as "control information A"), and the terminal 10 has a relation in which the subband groups are formed.
- control information A subband grouping information
- the terminal 10 transmits subband-based channel information (initial embodiment: CQI / PMI / RI information) for each initial component carrier, instead of subbands based on the newly configured subband group.
- subband-based channel information initial embodiment: CQI / PMI / RI information
- Channel information for each band group is transmitted (S608).
- Channel information for each subband group (in one embodiment: CQI / PMI / RI information) is transmitted for each subband group, but channel information for each subband for each subband for each component carrier (for example, CQI) for the formed subband group / PMI / RI information), and compares the information with the subband group channel information (for example, CQI / PMI / RI information) and examines how the two information are different from each other. It may determine whether to update the subband group and inform the base station 20 (S610, 612, 614). For example, if the difference between the two information exceeds a predetermined threshold (that is, an allowable value) in step S612, the base station 20 through the subband group update request information (also referred to as control information B) in step S614. Send.
- a predetermined threshold that is, an allowable value
- the base station 20 can check in which subband group the channel information (in one embodiment: CQI / PMI / RI, etc.) is different, and the subchannel as the subband group update request information. Determine whether the grouping is updated partially or globally, such as in an initialized state Accordingly, the subband grouping information is updated and the subband grouping information in the form of control information A is known to the terminal 10 (S510).
- subband group the channel information in one embodiment: CQI / PMI / RI, etc.
- the configuration of the base station 20 and the terminal 10 for subband grouping and transmitting channel information reported in uplink and downlink will be described below.
- FIG. 9 is a diagram illustrating a structure of a base station for transmitting subband group information grouped according to the present invention.
- a base station may include a module (subband grouping manager) 910 for managing subband grouping and a transceiver 920 for transmitting and receiving information with a user terminal.
- a module subband grouping manager 910 for managing subband grouping
- a transceiver 920 for transmitting and receiving information with a user terminal.
- the subband grouping management unit 910 generates a subband group consisting of the subbands using channel information about the subbands received from the user terminal, and the transceiver unit 920 transmits the subband group from the user terminal. Receives channel information for subbands, transmits subband grouping information for the subband group to the user terminal, and receives channel information for the subband group from the user terminal through a control channel.
- the subbands may be included in one or more component carriers.
- the subband group includes at least one subband having the same channel information, and the information on the subband group includes a total number of the generated subband groups and a subband group for identifying each subband group.
- the identification information may include one or more of subband identification information for identifying a subband included in each subband group.
- the subband grouping manager 910 updates the information on updating the subband group.
- the transmitter / receiver 920 transmits the updated information to the user terminal.
- FIG. 10 is a diagram illustrating a structure of a terminal for transmitting channel information of grouped subbands according to the present invention.
- a receiver 1040 that receives grouped subband grouping information for one or more subbands included in at least one component carrier from a base station, and is included in the at least one component carrier Subband channel information measuring unit 1010 for measuring the channel information for one or more subbands, the channel information for the one or more subbands, the channel information for each group of subbands corresponding to the subband grouping information
- the subband group channel information measuring unit 1020 includes a transmitter 1050 which transmits channel information for each subband corresponding to the subband group to the base station through a control channel.
- the subband group channel information measuring unit 1020 for measuring channel information for each subband group may be configured in the same unit as the subband channel information measuring unit 1010.
- the subband group channel information measuring unit 1020 providing a function of the subband channel information measuring unit 1010 measures channel information of one or more subbands included in the at least one CC.
- Channel information for each group of subbands corresponding to the subband grouping information may be configured.
- the subband group channel information measuring unit 1020 may configure channel information for each subband group by receiving channel information about the subbands measured by the subband channel information measuring unit 1010.
- the user terminal may further include an update parameter extractor 1030.
- the update parameter extractor 1030 may serve based on the channel information measured by the subband channel information measurer 1010 and the channel information for each subband group measured by the subband group channel information measurer 1020. Extracting a parameter for band group update, the transmitter 1050 may be configured to generate and transmit subband group update request information to the base station when the parameter exceeds a preset allowable value.
- Subband grouping information ("control information A" described above, embodiment of FIG. 7) including a relationship in which subband groups are formed in FIGS. 9 and 10 is information grouped by grouping subbands having similar characteristics for each component carrier. It is composed. Or information grouped by grouping at least one subband belonging to at least one component carrier having similar characteristics.
- a generation code indicating the generation of the subband group, the total number of the generated subband groups, and each One or more of subband group identification information for identifying a subband group and subband identification information (number) for identifying a subband included in each subband group may be included.
- the subband group update request information ("control information B" described above, the embodiment of FIG. 8) is not only CQI / PMI / RI but also ACK / NAK that can be detected in the downlink data channel associated with the subband group. It may also be determined as a frame error rate (FER) value calculated by the information.
- FER frame error rate
- various state information of the channel for example, information for measuring characteristics, qualities, or providing a measured result, are all included in one embodiment of the channel information herein.
- the subband group in the present specification means an object that can be represented or reported by a value of one specific channel information.
- the subband group update request information informs whether or not the subband grouping is valid as shown in FIG. 8A, or the parameter for subband group update as shown in FIG. 8B exceeds an allowable value.
- the subband groups of FIGS. 9 and 10 may i) include subbands of one component carrier (Intra-Carrier), ii) include subbands included in multiple component carriers (Inter-Carrier) iii) a combination of these two approaches (Intra-Carrier, Inter-Carrier).
- the 9 and 10 may be a physical uplink control channel (PUCCH) and may also be channel information.
- the channel quality indication information (CQI) and the precoding matrix indicator (PMI) may be used. It may include one or more of the rank indicator (RI), indication information about the noise level of the channel, error information generated in the channel, channel status information, or information measuring the quality of the channel.
- CQI channel quality indication information
- PMI precoding matrix indicator
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (24)
- 적어도 하나 이상의 요소 반송파를 사용하는 무선통신 시스템에서 기지국에 의한 채널정보를 수신하는 방법에 있어서,사용자 단말로부터 채널정보를 수신하는 단계;상기 수신한 채널정보를 이용하여 상기 적어도 하나 이상의 요소 반송파에 포함되는 하나 이상의 서브밴드에 대한 서브밴드 그룹을 생성하는 단계;상기 생성된 서브밴드 그룹에 대한 정보를 상기 사용자 단말에게 송신하는 단계; 및상기 사용자 단말로부터 상기 서브밴드 그룹에 대응하는 각 서브밴드의 그룹별 채널정보를 제어 채널을 통해 수신하는 단계를 포함하며,상기 서브밴드 그룹은 동일한 채널정보를 가지는 적어도 하나의 서브밴드를 포함하며, 상기 서브밴드 그룹에 대한 정보는, 상기 생성된 서브밴드 그룹의 전체 개수와, 각 서브밴드 그룹을 식별하기 위한 서브밴드 그룹 식별정보와, 각 서브밴드 그룹에 포함되는 서브밴드를 식별하기 위한 서브밴드 식별정보 중에서 하나 이상을 포함함을 특징으로 하는, 채널정보 수신 방법.
- 제 1항에 있어서,상기 서브밴드 그룹은 제 1 요소 반송파에 포함된 하나 이상의 서브밴드와 제 2 요소 반송파에 포함된 하나 이상의 서브밴드를 포함하며,상기 채널정보는 상기 서브밴드 그룹에 포함된 서브밴드들의 하향 링크 채널의 상태를 나타내는 정보인 것을 특징으로 하는, 채널정보 수신 방법.
- 제 2항에 있어서,상기 제 1 요소 반송파 또는 제 2 요소 반송파 중 적어도 하나는 상기 제어 채널을 포함하지 않는 것을 특징으로 하는, 채널정보 수신 방법.
- 제 1항에 있어서,상기 제어채널은, 물리적 상향링크 제어채널(PUCCH: Physical Downlink Control CHannel)인 것을 특징으로 하는, 채널정보 수신 방법.
- 제 1항에 있어서,상기 채널정보는, 상기 채널의 품질 지시 정보(CQI), 프리코딩 매트릭스 지시자(PMI), 랭크 지시자(RI), 채널의 잡음 정도에 대한 지시 정보, 채널에서 발생하는 에러 정보, 채널 상태정보, 또는 채널의 품질을 측정한 정보 중 하나 이상을 포함하는, 채널정보 수신 방법.
- 제 1항에 있어서,상기 사용자 단말로부터 서브밴드 그룹 갱신 요청 정보를 수신하는 단계; 및상기 서브밴드 그룹을 갱신한 서브밴드 그룹 리스트를 포함하는 서브밴드 그룹 갱신 정보를 상기 사용자 단말에 송신하는 단계를 더 포함하며,상기 서브밴드 그룹 갱신 요청 정보는, 상기 서브밴드 그룹이 새롭게 생성되거나 해제됨을 지시하는 생성/해제코드를 나타내는 부분과, 상기 새롭게 구성되거나 해제되는 서브밴드 그룹의 전체 개수를 알려주는 부분과, 상기 새롭게 구성되거나 해제되는 각 서브밴드 그룹 및 각 서브밴드 그룹에 포함된 서브밴드를 식별하기 식별정보(번호)를 알려주는 부분을 포함함을 특징으로 하는, 채널정보 수신 방법.
- 적어도 하나 이상의 요소 반송파를 사용하는 무선통신 시스템에서 사용자 단말에 의한 채널정보를 송신하는 방법에 있어서,상기 적어도 하나 이상의 요소 반송파에 포함된 하나 이상의 서브밴드들에 대한 채널정보를 기지국으로 송신하는 단계;상기 기지국으로부터 상기 적어도 하나 이상의 요소 반송파에 포함되는 하나 이상의 서브밴드에 대한 그룹핑된 서브밴드 그룹에 대한 정보를 수신하는 단계;상기 적어도 하나 이상의 서브밴드들에 대한 채널정보를 상기 서브밴드 그룹에 대응하는 각 서브밴드의 그룹별 채널정보로 하여 제어 채널을 통해 상기 기지국으로 상기 각 서브밴드의 그룹별 채널정보를 송신하는 단계를 포함하며,상기 서브밴드 그룹은 동일한 채널정보를 가지는 적어도 하나의 서브밴드를 포함하며, 상기 서브밴드 그룹에 대한 정보는, 상기 생성된 서브밴드 그룹의 전체 개수와, 각 서브밴드 그룹을 식별하기 위한 서브밴드 그룹 식별정보와, 각 서브밴드 그룹에 포함되는 서브밴드를 식별하기 위한 서브밴드 식별정보 중에서 하나 이상을 포함함을 특징으로 하는, 채널정보 송신 방법.
- 제 7항에 있어서,상기 서브밴드 그룹은 제 1 요소 반송파에 포함된 하나 이상의 서브밴드와 제 2 요소 반송파에 포함된 하나 이상의 서브밴드를 포함하며,상기 채널정보는 상기 서브밴드 그룹에 포함된 서브밴드들의 하향 링크 채널의 상태를 나타내는 정보인 것을 특징으로 하는, 채널정보 송신 방법.
- 제 8항에 있어서,상기 제 1 요소 반송파 또는 제 2 요소 반송파 중 적어도 하나는 상기 제어 채널을 포함하지 않는 것을 특징으로 하는, 채널정보 송신 방법.
- 제 7항에 있어서,상기 제어채널은, 물리적 상향링크 제어채널(PUCCH: Physical Downlink Control CHannel)인 것을 특징으로 하는, 채널정보 송신 방법.
- 제 7항에 있어서,상기 채널정보는상기 채널의 품질 지시 정보(CQI), 프리코딩 매트릭스 지시자(PMI), 랭크 지시자(RI), 채널의 잡음 정도에 대한 지시 정보, 채널에서 발생하는 에러 정보, 채널 상태정보, 또는 채널의 품질을 측정한 정보 중 하나 이상을 포함하는, 채널정보 송신 방법.
- 제 7항에 있어서,상기 사용자 단말은, 상기 적어도 하나 이상의 요소 반송파 중에서 각 요소 반송파에 대한 서브밴드별 채널정보와 상기 서브밴드 그룹별 채널정보를 기초로 서브밴드 그룹 갱신을 위한 파라미터를 추출하는 단계와,상기 파라미터가 미리 설정된 허용 값을 초과하는 경우 서브밴드 그룹 갱신 요청 정보를 생성하여 상기 기지국에 송신하는 단계를 더 포함하며,상기 서브밴드 그룹 갱신 요청 정보는, 상기 서브밴드 그룹이 새롭게 생성되거나 해제됨을 지시하는 생성/해제코드를 나타내는 부분과, 상기 새롭게 구성되거나 해제되는 서브밴드 그룹의 전체 개수를 알려주는 부분과, 상기 새롭게 구성되거나 해제되는 각 서브밴드 그룹 및 각 서브밴드 그룹에 포함된 서브밴드를 식별하기 식별정보(번호)를 알려주는 부분을 포함함을 특징으로 하는 채널정보 전송 방법.
- 사용자 단말로부터 수신한 채널정보를 이용하여 적어도 하나 이상의 요소 반송파에 포함되는 하나 이상의 서브밴드에 대한 서브밴드 그룹을 생성하는 서브밴드 그룹화 관리부; 및상기 서브밴드 그룹에 대한 서브밴드 그룹화 정보를 상기 사용자 단말에게 송신하며, 상기 사용자 단말로부터 상기 서브밴드 그룹에 대응하는 각 서브밴드의 그룹별 채널정보를 제어 채널을 통해 수신하는 송수신부를 포함하며,상기 서브밴드 그룹은 동일한 채널정보를 가지는 적어도 하나의 서브밴드를 포함하며, 상기 서브밴드 그룹에 대한 정보는, 상기 생성된 서브밴드 그룹의 전체 개수와, 각 서브밴드 그룹을 식별하기 위한 서브밴드 그룹 식별정보와, 각 서브밴드 그룹에 포함되는 서브밴드를 식별하기 위한 서브밴드 식별정보 중에서 하나 이상을 포함함을 특징으로 하는, 무선 통신 시스템.
- 제 13항에 있어서,상기 서브밴드 그룹은 제 1 요소 반송파에 포함된 하나 이상의 서브밴드와 제 2 요소 반송파에 포함된 하나 이상의 서브밴드를 포함하며,상기 채널정보는 상기 서브밴드 그룹에 포함된 서브밴드들의 하향 링크 채널의 상태를 나타내는 정보인 것을 특징으로 하는, 무선 통신 시스템.
- 제 14항에 있어서,상기 제 1 요소 반송파 또는 제 2 요소 반송파 중 적어도 하나는 상기 제어 채널을 포함하지 않는 것을 특징으로 하는, 무선 통신 시스템.
- 제 13항에 있어서,상기 제어채널은, 물리적 상향링크 제어채널(PUCCH: Physical Downlink Control CHannel)인 것을 특징으로 하는, 무선 통신 시스템.
- 제 13항에 있어서,상기 채널정보는상기 채널의 품질 지시 정보(CQI), 프리코딩 매트릭스 지시자(PMI), 랭크 지시자(RI), 채널의 잡음 정도에 대한 지시 정보, 채널에서 발생하는 에러 정보, 채널 상태정보, 또는 채널의 품질을 측정한 정보 중 하나 이상을 포함하는, 무선 통신 시스템.
- 제 13항에 있어서,상기 송수신부가 상기 사용자 단말로부터 서브밴드 그룹 갱신 요청 정보를 수신하는 경우, 상기 서브밴드 그룹화 관리부는 상기 서브밴드 그룹을 갱신한 서브밴드 그룹 리스트를 포함하는 서브밴드 그룹 갱신 정보를 생성함을 특징으로 하며,상기 서브밴드 그룹 갱신 요청 정보는, 상기 서브밴드 그룹이 새롭게 생성되거나 해제됨을 지시하는 생성/해제코드를 나타내는 부분과, 상기 새롭게 구성되거나 해제되는 서브밴드 그룹의 전체 개수를 알려주는 부분과, 상기 새롭게 구성되거나 해제되는 각 서브밴드 그룹 및 각 서브밴드 그룹에 포함된 서브밴드를 식별하기 식별정보(번호)를 알려주는 부분을 포함함을 특징으로 하는, 무선 통신 시스템.
- 기지국으로부터 적어도 하나 이상의 요소 반송파에 포함되는 하나 이상의 서브밴드에 대한 그룹핑된 서브밴드 그룹화 정보를 수신하는 수신부;상기 적어도 하나 이상의 요소 반송파에 포함된 하나 이상의 서브밴드들에 대한 채널정보를 측정하는 서브밴드 채널정보 측정부;상기 하나 이상의 서브밴드들에 대한 채널정보를, 상기 서브밴드 그룹화 정보에 대응하는 각 서브밴드의 그룹별 채널정보로 구성하는 서브밴드 그룹 채널정보 측정부;상기 서브밴드 그룹에 대응하는 각 서브밴드의 그룹별 채널정보를 제어 채널을 통해 상기 기지국으로 송신하는 송신부를 포함함을 특징으로 하는, 사용자 단말.
- 제 19항에 있어서,상기 서브밴드 그룹은 제 1 요소 반송파에 포함된 하나 이상의 서브밴드와 제 2 요소 반송파에 포함된 하나 이상의 서브밴드를 포함하며,상기 채널정보는 상기 서브밴드 그룹에 포함된 서브밴드들의 하향 링크 채널의 상태를 나타내는 정보인 것을 특징으로 하는, 사용자 단말.
- 제 20항에 있어서,상기 제 1 요소 반송파 또는 제 2 요소 반송파 중 적어도 하나는 상기 제어 채널을 포함하지 않는 것을 특징으로 하는, 사용자 단말.
- 제 20항에 있어서,상기 제어채널은, 물리적 상향링크 제어채널(PUCCH: Physical Downlink Control CHannel)인 것을 특징으로 하는, 사용자 단말.
- 제 19항에 있어서,상기 채널정보는상기 채널의 품질 지시 정보(CQI), 프리코딩 매트릭스 지시자(PMI), 랭크 지시자(RI), 채널의 잡음 정도에 대한 지시 정보, 채널에서 발생하는 에러 정보, 채널 상태정보, 또는 채널의 품질을 측정한 정보 중 하나 이상을 포함하는, 사용자 단말.
- 제 19항에 있어서,상기 서브밴드 채널정보 측정부에서 측정한 채널정보와 상기 서브밴드 그룹 채널정보 측정부에서 측정한 상기 서브밴드 그룹별 채널정보를 기초로 서브밴드 그룹 갱신을 위한 파라미터를 추출하는 갱신 파라미터 추출부를 더 포함하며,상기 파라미터가 미리 설정된 허용 값을 초과할 경우 상기 송신부는 서브밴드 그룹 갱신 요청 정보를 생성하여 상기 기지국에 송신하며,상기 서브밴드 그룹 갱신 요청 정보는, 상기 서브밴드 그룹이 새롭게 생성되거나 해제됨을 지시하는 생성/해제코드를 나타내는 부분과, 상기 새롭게 구성되거나 해제되는 서브밴드 그룹의 전체 개수를 알려주는 부분과, 상기 새롭게 구성되거나 해제되는 각 서브밴드 그룹 및 각 서브밴드 그룹에 포함된 서브밴드를 식별하기 식별정보(번호)를 알려주는 부분을 포함함을 특징으로 하는, 사용자 단말.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/515,705 US20120281578A1 (en) | 2009-12-15 | 2010-12-07 | Method for transceiving channel information, and terminal and base station using same |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2009-0124441 | 2009-12-15 | ||
KR20090124441 | 2009-12-15 | ||
KR1020100123233A KR20110068853A (ko) | 2009-12-15 | 2010-12-06 | 채널정보를 송수신하는 방법과 이를 이용하는 단말 및 기지국 |
KR10-2010-0123233 | 2010-12-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011074816A2 true WO2011074816A2 (ko) | 2011-06-23 |
WO2011074816A3 WO2011074816A3 (ko) | 2011-11-03 |
Family
ID=44167827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2010/008685 WO2011074816A2 (ko) | 2009-12-15 | 2010-12-07 | 채널정보를 송수신하는 방법과 이를 이용하는 단말 및 기지국 |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2011074816A2 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105264802A (zh) * | 2013-09-04 | 2016-01-20 | 华为技术有限公司 | 信道测量方法、终端设备及基站 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070206559A1 (en) * | 2006-02-11 | 2007-09-06 | Samsung Electronics Co., Ltd. | Method and apparatus for allocating transmission resources and signaling the allocated transmission resources for frequency diversity |
US20080043677A1 (en) * | 2006-08-18 | 2008-02-21 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting/receiving feedback information representing channel quality in a mimo-ofdm system |
-
2010
- 2010-12-07 WO PCT/KR2010/008685 patent/WO2011074816A2/ko active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070206559A1 (en) * | 2006-02-11 | 2007-09-06 | Samsung Electronics Co., Ltd. | Method and apparatus for allocating transmission resources and signaling the allocated transmission resources for frequency diversity |
US20080043677A1 (en) * | 2006-08-18 | 2008-02-21 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting/receiving feedback information representing channel quality in a mimo-ofdm system |
Non-Patent Citations (2)
Title |
---|
'TP for TR36.814 on downlink control signaling for carrier aggregation' R1-094959, 3GPP TSG RAN WG1 MEETING #59 09 November 2009, * |
'TP for TR36.814 on downlink control signaling for carrier aggregation' R1-094960, 3GPP TSG RAN WG1 MEETING #59 09 November 2009, * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105264802A (zh) * | 2013-09-04 | 2016-01-20 | 华为技术有限公司 | 信道测量方法、终端设备及基站 |
US10390246B2 (en) | 2013-09-04 | 2019-08-20 | Huawei Technologies Co., Ltd. | Channel measurement method, terminal device, and base station |
CN105264802B (zh) * | 2013-09-04 | 2020-01-31 | 华为技术有限公司 | 信道测量方法、终端设备及基站 |
Also Published As
Publication number | Publication date |
---|---|
WO2011074816A3 (ko) | 2011-11-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2010013970A2 (en) | Method and apparatus for transmitting data in multiple carrier system | |
WO2012070800A1 (en) | Antenna allocation apparatus and method for cellular mobile communication system | |
WO2012111973A2 (en) | Method and apparatus of handling user equipment category in wireless communication system | |
WO2014051293A1 (ko) | 하향링크 제어채널에서의 블라인드 디코딩을 조절하는 방법 및 장치 | |
WO2011049359A4 (en) | Power headroom reporting method and device for wireless communication system | |
WO2011139063A2 (en) | Method and apparatus for reconfiguring control channel in wireless communication system | |
WO2012177092A2 (en) | Method and apparatus for measuring downlink interference in ofdm mobile communication system | |
WO2015065048A1 (en) | Method and apparatus of controlling periodic csi reporting | |
WO2011074885A2 (ko) | 무선 통신 시스템에서 채널 품질 보고 방법 및 장치 | |
WO2013048050A1 (en) | Method and apparatus for reporting location information | |
WO2010143911A2 (ko) | 무선 통신 시스템에서 측정 보고 방법 및 장치 | |
WO2010077038A2 (en) | Method and apparatus for transmitting signal in wireless communication system | |
WO2013043006A1 (en) | System access method and apparatus of a narrowband terminal in a wireless communication system supporting wideband and narrowband terminals | |
WO2011078631A2 (ko) | 다중 반송파 지원 무선 통신 시스템에서 상향링크 전송 전력 제어 방법 및 장치 | |
WO2014069941A1 (ko) | 통신 시스템에서 간섭 측정을 위한 방법 및 그 장치 | |
WO2013172684A1 (en) | Channel estimation method and apparatus for cooperative communication in a cellular mobile communication system | |
WO2014042453A1 (en) | Transmitting and receiving uplink control channel | |
WO2011055992A2 (en) | Apparatus and method for transmitting and receiving control information in wireless communication system | |
WO2012077989A2 (en) | Channel status information feedback method and apparatus for a distributed antenna mobile communication system | |
WO2011162543A2 (ko) | 다중 반송파 지원 무선 통신 시스템에서 상향링크 제어 정보 송수신 방법 및 장치 | |
WO2011074868A2 (ko) | 무선 통신 시스템에서 제어 채널 모니터링 방법 및 장치 | |
EP2664088A2 (en) | Secondary carrier activation/deactivation method and apparatus for mobile communication system supporting carrier aggregation | |
WO2012102595A2 (ko) | 셀룰라 이동 통신 시스템의 기준 신호 생성 방법 및 장치 | |
WO2011059187A2 (ko) | 무선통신시스템에서 시스템 정보 송수신 방법 및 그를 이용한 시스템 정보 송신장치와 수신장치 | |
WO2016195278A1 (ko) | 광대역 서비스를 제공하는 무선통신 시스템에서 스케쥴링 방법 및 장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10837812 Country of ref document: EP Kind code of ref document: A1 |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10837812 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13515705 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 10837812 Country of ref document: EP Kind code of ref document: A2 |