WO2009132523A1 - 一种信道质量指示的发送资源确定方法与装置 - Google Patents
一种信道质量指示的发送资源确定方法与装置 Download PDFInfo
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- WO2009132523A1 WO2009132523A1 PCT/CN2009/000476 CN2009000476W WO2009132523A1 WO 2009132523 A1 WO2009132523 A1 WO 2009132523A1 CN 2009000476 W CN2009000476 W CN 2009000476W WO 2009132523 A1 WO2009132523 A1 WO 2009132523A1
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- Prior art keywords
- determining
- cqi
- uplink
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- subframes
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 230000004913 activation Effects 0.000 claims description 28
- 230000000737 periodic effect Effects 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 13
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 101150014328 RAN2 gene Proteins 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000020281 long black Nutrition 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
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- 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
- H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
Definitions
- the present invention relates to a Wireless Time Division Duplex (TDD) and a Half Duplex-Frequency Division Duplex (HD-FDD) system, and more particularly to a method using Discontinuous Reception (DR) operation.
- TDD Wireless Time Division Duplex
- HD-FDD Half Duplex-Frequency Division Duplex
- DR Discontinuous Reception
- E-UTRAN Evolved Universal Terrestrial Radio Access Network
- the UE can perform DRX operation, that is, temporarily turn off the receiver, and wake up to monitor the corresponding physical layer downlink control channel (PDCCH) at the time agreed with the base station, so as to know whether the base station is in sleep period. There is data to send to the UE.
- the DRX operation includes some set parameters and some control timers.
- the included parameters include a DRX cycle, and the included timer has an On Duration Timer and a DRX inactivity timer. (DRX Inactivity Timer) and so on. Where a DRX cycle contains an activation period
- the UE monitors the PDCCH in the On Duration period. If the data indication sent by the base station to itself is not monitored, the On Duration Timer expires and then enters the sleep state. If the UE monitors the PDCCH in the On Duration to know that there is a data indication sent to itself, the DRX Inactivity Timer is started. If the PDCCH does not indicate that the data transmission to the UE exceeds the DRX Inactivity Timer, the UE enters the sleep again. status.
- the receiver of the UE is turned on, and the receiver enters an active state.
- the E-UTRAN base station (e B ) can transmit downlink data when the UE turns on the receiver. Since the dynamic scheduling is adopted in the E-UTRAN system, for the downlink transmission, the base station needs to know the CQI of the downlink channel through feedback of the UE, that is, The CQL E-UTRAN system for the UE to feed back the downlink channel through the uplink channel supports periodic and aperiodic CQI reporting mechanisms.
- the 3GPP RAN2 team has agreed on how to send CQI and SRS information in the DRX cycle in the E-UTRAN FDD system, that is, the UE can send CQI information within the Active time within the DR cycle.
- E-UTRAN TDD and HD-FDD systems there is no agreed solution to this problem.
- both uplink and downlink are transmitted at the same frequency, which are staggered in time.
- the HD-FDD system transmits uplink and downlink at different frequencies, but only uplink or downlink transmission at the same time, which is similar to the TDD system.
- the first configuration mode (Configuration 0):
- the ratio of the downlink subframe (DL) to the uplink subframe (UL) is 1DL: 3UL, and the repetition period is 5ms, that is:
- Method 1 Send a CQI report in an uplink subframe that is interposed between Active downlink subframes.
- the UL indicated by the vertical upward arrow without the cross mark is the corresponding UL for reporting the CQI, and the UL indicated by the vertical upward arrow with the cross mark does not transmit the CQI report.
- Method 2 The CQI report is sent in all uplink subframes in the radio frame spanned by the Active time, as shown in Figure 3 and Figure 4.
- CQI 4 is sent in all uplink subframes of the radio frame n (4 ULs are identified in Figure 3).
- the Active time spans the radio frame n and the radio frame n+1, then all uplink subframes of the radio frame n (4 ULs are identified in FIG. 4) and all uplink subframes of the radio frame n+1 (figure 4 UL is identified in 4) and CQI reports are sent.
- Method 2 may also send a CQI report uplink when the UE time has expired and the UE receiver has re-entered the sleep state, and the downlink transmission has been suspended, and the subsequent CQI is useless.
- the CQI transmission is a waste of uplink resources.
- the upper layer needs to know the number and boundary information of the radio frames that are actively spanned, so as to know the uplink subframes that can send CQI, which also increases Complexity and uncertainty. Summary of the invention
- the embodiment of the invention provides a CQI transmission resource determining method capable of ensuring CQI information during downlink scheduling and effectively saving uplink resources.
- the embodiment of the invention further provides a CQI transmission resource determining apparatus capable of acquiring CQI information during downlink scheduling and effectively saving uplink resources.
- the method for determining a transmission resource for channel quality indication is applied to a discontinuous reception DRX operation in a time division duplex TDD system and a half frequency division duplex HD-FDD system, Includes:
- One or more uplink subframes after the determined location are one or more uplink subframes after the determined location.
- the transmission resource determining apparatus for the channel quality indication provided by the embodiment of the present invention is applied to the discontinuous reception DR operation in the time division duplex TDD system and the half frequency division duplex HD-FDD system, the method includes:
- a first determining unit configured to determine a location of a downlink subframe in which a starting point of the physical layer downlink control channel PDCCH is started to be monitored in the DR period;
- a second determining unit configured to determine, according to the transmit channel quality indicator CQI, the transmit resource is: an uplink subframe before the determined location; or one or more uplink subframes after the determined location.
- the transmission resource determining scheme of the channel quality indicator determines that the location of the downlink subframe in which the starting point of the PDCCH is started to be monitored in the DRX period, and determines that the sending resource of the CQI is: before the determined location An uplink subframe; or one or more uplink subframes after the determined location.
- the CQI is sent in one or more uplink subframes after the location of the downlink subframe to effectively support the downlink scheduling operation, and saves uplink resources that need to be reserved for the transmission period CQI.
- FIG. 1 is a schematic diagram showing an arrangement of uplink and downlink subframe ratios of data frames in an existing E-UTRAN TDD system
- FIG. 3 is a schematic diagram of a CQI 4 advertisement that can be sent in all uplink subframes in a radio frame spanned by Active time in the prior art;
- FIG. 4 is a second schematic diagram of a CQI report that can be sent in all uplink subframes in a radio frame spanned in Active time in the prior art
- FIG. 5 is a flowchart of a method for determining a transmission resource of a channel quality indicator according to Embodiment 1 of the present invention
- FIG. 6 is a schematic diagram of a CQI for configuring uplink resource transmission before monitoring a starting point of a PDCCH according to an embodiment of the present invention
- FIG. 7 is a second schematic diagram of a CQI for configuring uplink resource transmission before monitoring a starting point of a PDCCH according to an embodiment of the present invention
- FIG. 8 is a schematic diagram of a CQI for configuring uplink resource transmission before monitoring a starting point of a PDCCH according to an embodiment of the present invention
- FIG. 9 is a flowchart of a method for determining a transmission resource of a channel quality indicator according to Embodiment 2 of the present invention.
- FIG. 10 is a schematic diagram of configuring an uplink resource transmission CQI before monitoring a starting point of a PDCCH according to an embodiment of the present invention;
- FIG. 11 is a schematic structural diagram of a transmission resource determining apparatus for channel quality indication according to an embodiment of the present disclosure
- FIG. 12 is a schematic diagram of a specific structure of a second determining unit in a sending resource determining apparatus for channel quality indication according to an embodiment of the present disclosure
- FIG. 13 is a schematic structural diagram of a second determining subunit of a second determining unit in a sending resource determining apparatus for channel quality indication according to an embodiment of the present invention
- FIG. 14 is a second schematic structural diagram of a second determining unit in a transmission resource determining apparatus for channel quality indication according to an embodiment of the present invention. detailed description
- FIG. 5 is a flowchart of a method for determining a transmission resource of a channel quality indicator according to Embodiment 1 of the present invention, including:
- Step S501 Determine a location of a downlink subframe in which the starting point of the PDCCH is started to be monitored in the DRX cycle;
- the location of the first downlink subframe in which the PDCCH is started to be monitored in the DRX cycle is determined.
- Step S502 Determine a transmission channel quality indication CQI transmission resource is:
- One or more uplink subframes after the determined location are one or more uplink subframes after the determined location.
- the sending resource for determining to send the CQI in step S502 is specifically:
- the transmission resource for transmitting the CQI is determined.
- the foregoing sending resource based on the queue to determine to send the CQI is specifically:
- One or more uplink subframes in the queue are determined to be the transmission resources of the CQI for periodic or aperiodic transmission.
- Case 1 For the 1DL: 3UL and 3DL: 5UL uplink and downlink subframe ratio configuration modes shown in FIG. 1, where the number of uplink subframes is greater than the number of downlink subframes, even if special subframes are included, consecutive downlink subframes At most, only three transmission time intervals (TTIs) are maintained, and at the same time, there are more uplink subframes between the downlink subframes. If the downlink data transmission is indicated at the beginning of the DRX cycle (that is, the CQI information that needs to be fed back), the minimum active time included in the downlink subframe span will almost certainly contain the uplink subframe, and the appropriate uplink can be selected therein.
- TTIs transmission time intervals
- the CQI information is transmitted in the subframe, and the downlink scheduling operation is effectively supported.
- the CQI needs to be configured to be sent before the PDCCH is monitored. This saves the uplink resources that need to be reserved for the CQI. .
- FIG. 6 it is a 1DL: 3UL uplink-downlink subframe proportion configuration manner, assuming that it is dropped from the left side in FIG.
- the UE enters the Active time, and the subframe where the starting point of the PDCCH is monitored is the first DL on the right side of the small black line.
- the length of the set period is 5 downlink subframes
- the sub-frame position of the starting point of the PDCCH is monitored, and the order of the uplink and downlink sub-frames in the set period is determined according to the order of the uplink and downlink sub-frames in the 1DL:3UL configuration mode and the length of the set period.
- the queue is the DL and UL located between the two longer small black lines in Figure 6. It can be seen from FIG. 6 that the queue contains 6 ULs, which can theoretically serve as uplink subframes for transmitting CQI.
- the queue is selected according to the propagation delay and processing delay T of the CQI reporting.
- the first uplink subframe in the time T before the next downlink subframe position in the consecutive uplink subframes is determined to be a periodic or aperiodic transmission CQI transmission resource.
- T 3ms (that is, the delay of three subframes)
- the network side can receive and process the CQI report in time, and make the reported CQI reflect the current channel quality of the downlink channel as much as possible, as shown in Figure 6.
- one of the leftmost ULs (each subframe is arranged chronologically from left to right) may be selected as the transmission resource of the CQI for periodic or aperiodic transmission.
- the number of downlink subframes included in the foregoing setting period may be determined according to the number of downlink subframes spanned by the On Duration period and the subframe repetition period corresponding to the proportion configuration of the uplink and downlink subframes currently used by the TDD system. .
- the number of downlink subframes spanned by the On Duration period is: The number of downlink subframes that continuously monitor the PDCCH at the beginning of a DRX cycle set by the base station (ie, the On Duration phase).
- the ratio of 1DL:3UL uplink and downlink subframes is used.
- the ratio of the subframes is 5, and the set period can be set to 5 downlink subframes.
- Case 2 For the 7DL: 2UL uplink-downlink subframe ratio configuration shown in Figure 1, although the number of downlink subframes is much larger than the number of uplink subframes and there are more consecutive downlink subframes, if the PDCCH is monitored in the DRX cycle The subframe where the starting point is located is the start position of the radio frame, and the On-duration time is long. According to the method in the foregoing Embodiment 1, the CQI is not required to be configured before the PDCCH is monitored. As shown in FIG.
- the On-duration time period is 6 downlink subframes, and the set period is greater than or equal to 6 downlink subframes (taking 6 downlink subframes as an example), and the subframe position where the starting point of the PDCCH is monitored is monitored.
- the first subframe (#0) of the radio frame is determined by the subframe position where the starting point of the PDCCH is monitored, according to the order of the uplink and downlink subframes in the 7DL:2UL configuration mode, and the length of the set period.
- the sorting queue of the uplink and downlink subframes in the set period is each DL and UL located between the two long and small black lines in FIG. 7. As can be seen from FIG.
- the queue includes two ULs, which can theoretically serve as uplink subframes for transmitting CQI.
- the leftmost UL can be selected as the period or non- The transmission resource of the CQI is periodically transmitted.
- Case 3 The location of the subframe where the starting point of the PDCCH is monitored is not necessarily the starting position of a radio frame, and the channel quality of the uplink and downlink subframes of the TDD system is used.
- embodiments of the present invention provide the following further improvements, namely:
- An uplink subframe preceding the frame position is determined to be a transmission resource for periodically transmitting the CQI.
- the improved scheme ensures CQI information that is sent by the uplink resource during the active time of the UE.
- the set threshold is 5 consecutive downlink subframes (5 ms).
- the starting point of the PDCCH is monitored in subframe #6, the first one after The uplink subframe is subframe #2 of the next radio frame, and the number of consecutive downlink subframes is six, which has exceeded the threshold.
- the downlink subframes can be dynamically scheduled by using the downlink channel information carried in the reported CQI, it is necessary to monitor the starting point of the PDCCH before For example, CQI information is transmitted in uplink subframe #3.
- the method in the first embodiment is applicable to the case where the queue includes the UL.
- the method described in the first embodiment may be used, and there may be a case where there is no UL in the queue. Therefore, the following embodiment 2 is provided.
- a transmission resource determining method that covers a channel quality indication in which there are two cases of UL or no UL in the queue.
- Embodiment 2 is a diagrammatic representation of Embodiment 1:
- FIG. 9 is a flowchart of a method for determining a transmission resource of a channel quality indicator according to Embodiment 2 of the present invention, including:
- Step S901 Determine a location of a downlink subframe in which a starting point of the physical layer downlink control channel PDCCH is started to be monitored in the DRX cycle.
- Step S902 Determine, according to the determined location, and a ratio of the uplink and downlink subframes in the data frame of the TDD system, the scheduling queue of the uplink and downlink subframes in the setting period after the receiver of the user terminal UE is activated;
- Step S903 determining whether there is an uplink subframe in the determined queue; if there is an uplink subframe, executing step S904; otherwise, executing step S905;
- Step S904 Determine one or more uplink subframes in the queue as a transmission resource of a periodic or aperiodic transmission CQI;
- Step S905 Determine an uplink subframe that is located before the subframe position where the starting point of the PDCCH is monitored, and determine the transmission resource that periodically sends the CQI.
- FIG 10. A specific example is shown in Figure 10.
- the TDD system uses the 8DL: 1UL configuration mode. If the starting point of the PDCCH is the downlink subframe #3, if the set period is 8 downlink subframes, the PDCCH is monitored. Starting from the position of the subframe where the starting point is located, according to the order of the uplink and downlink subframes in the 8DL:1UL configuration mode, and the length of the set period, it is determined that the scheduling queue of the uplink and downlink subframes is located in the set period after the UE is activated.
- Figure 10 shows the DL between two long, small black lines. That is, the queue does not contain any uplink subframes, so there is no chance to send CQI.
- the resource transmission CQI in order to ensure that the uplink CQI can be transmitted, the resource transmission CQI must be configured in the uplink subframe before the start point of the monitoring PDCCH.
- the delay is T, the uplink subframes in which the consecutive uplink subframes are located before the subframe position before the start point are selected, and the transmission resource of the CQI is determined to be periodically transmitted.
- the CQI needs to be sent only in the third uplink subframe before the subframe position where the starting point of the PDCCH is monitored. It can ensure that the network side has enough time to receive and process the CQI, and can make the reported CQI more realistically reflect the current channel quality of the downlink channel.
- the network side determines the transmission resource of the CQI, and may determine the sent resource (including the determined uplink UL of the sent CQI, and further includes specifying a specific CQI for sending the CQI by using the foregoing method in the first embodiment and the second embodiment.
- the information of the time, frequency, code resource, etc. is notified to the UE through the PDCCH, and the UE sends the CQI report on the corresponding transmission resource.
- the specific notification and reporting methods are prior art and are not detailed.
- the receiver has a long activation time, and may further be a UE according to the activation duration of the receiver of the UE.
- a transmission resource for transmitting a non-periodic CQI is allocated.
- the activation time of the receiver of the accumulated UE is increased, and after the activation time is increased by 5 ms (for example, the set duration threshold is 5 ms, 10 ms), the UE is instructed to send the CQI in one or more subsequent uplink subframes.
- the method further includes: determining whether the activation time of the receiver of the UE ends; after determining that the activation time of the receiver of the UE ends, instructing the UE to not send the CQI report.
- the dynamic configuration of the CQI transmission resource is implemented; and after the UE enters the sleep state at the end of the active time, the CQI is no longer sent, thereby further effectively saving the uplink. Resources.
- the method for determining the transmission resource of the channel quality indicator provided by the embodiment of the present invention is described in detail by taking the TDD system as an example. Since the HD-FDD system is similar to the TDD system, only the uplink or downlink transmission is performed at the same time, and only the uplink and the downlink are respectively transmitted at different frequencies. Therefore, the method of the embodiment of the present invention is also applicable to the HD-FDD system.
- Embodiment 3 is a diagrammatic representation of Embodiment 3
- the embodiment of the present invention provides a transmission resource determining apparatus for a corresponding channel quality indication, and a schematic structural diagram thereof is shown in FIG.
- the first determining unit 111 is configured to determine a location of a downlink subframe in which the starting point of the physical layer downlink control channel PDCCH is started to be monitored in the DRX cycle;
- the second determining unit 112 is configured to determine, according to the transmit channel quality indicator CQI, the transmit resource: an uplink subframe before the determined location; or one or more uplink subframes after the determined location.
- the first structure of the second determining unit 112 is as shown in FIG. 12, and includes: a first determining subunit 121, a location determined according to the first determining unit 111, and the location The proportion of the uplink and downlink subframes in the system data frame is determined, and the scheduling queue of the uplink and downlink subframes in the set time period after the receiver of the user terminal UE is activated is determined;
- the second determining sub-unit 122 is configured to determine, according to the queue determined by the first determining sub-unit 121, a sending resource that sends the CQI.
- the structure of the second determining sub-unit 122 is as shown in FIG. 13 , and includes: a first determining sub-module 131, configured to determine one of the queues determined by the first determining sub-unit 121 Or a plurality of uplink subframes are determined to be periodic or aperiodic transmission resources for transmitting CQIs.
- the second determining sub-unit 122 further includes: a determining module 132 and a second determining sub-module 133;
- the determining module 132 is configured to determine whether the queue determined by the first determining sub-unit 121 includes an uplink subframe, and if the uplink subframe is included, start the first determining sub-module 131; If the uplink subframe is not included, the second determining submodule 133 is started;
- the second determining sub-module 133 is configured to obtain the location determined by the first determining unit 111, and determine an uplink subframe that is located before the location as a sending resource for periodically transmitting CQI.
- the determining module 132 is further configured to: when determining that the queue determined by the first determining sub-unit 121 includes more than one consecutive uplink subframe, the propagation delay and processing according to the CQI reporting The delay T, the first sub-module 131 is notified to the first determining sub-module 131 in the consecutive uplink sub-frames in the consecutive uplink sub-frames before the next downlink sub-frame position.
- the first determining sub-module 131 determines the uplink subframe notified by the determining module 133 to be a transmission resource of a CQI periodically or aperiodically.
- the determining module 132 is further configured to: determine that the queue determined by the first determining sub-unit 121 does not include an uplink subframe, and is located at the location determined by the first determining unit 111.
- the first uplink subframe notification in the time T before the location in the consecutive multiple uplink subframes is selected.
- the second determining sub-module 133 determines the uplink subframe notified by the determining module 132 as a transmission resource for periodically transmitting the CQI.
- the determining module 132 is further configured to determine whether the number of consecutive downlink subframes has been reached before determining, by the first determining sub-unit 121, an uplink subframe that is ranked first in the queue. The set threshold, if yes, activates the second determining sub-module 133.
- the second structure of the second determining unit 112 is as shown in FIG. 14 including: an activation duration counting subunit 141 and a third determining subunit 142;
- the activation duration statistics sub-unit 141 is configured to count the activation duration of the receiver of the UE, and when the activation duration of the UE receiver exceeds the set duration threshold, the third determining sub-unit 142 is started;
- the sub-unit 142 is configured to determine one or more uplink subframes after the threshold as the transmission resource of the aperiodic transmission CQI.
- the second determining unit 112 further includes: an activation determining indication subunit 143, configured to: Determining whether the activation time of the receiver of the UE ends; after determining that the activation time of the receiver of the UE ends, instructing the UE to no longer send the CQI report.
- an activation determining indication subunit 143 configured to: Determining whether the activation time of the receiver of the UE ends; after determining that the activation time of the receiver of the UE ends, instructing the UE to no longer send the CQI report.
- the embodiment of the present invention provides a scheme for dynamically configuring CQI transmission resources by considering the TDD uplink and downlink proportion configuration, the DRX cycle start point, and the DRX related timer setting for the TDD system, which can ensure the downlink scheduling.
- the solution provided by the embodiment of the present invention can also be applied to an HD-FDD system.
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Description
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Priority Applications (3)
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KR1020107025296A KR101226583B1 (ko) | 2008-04-29 | 2009-04-29 | 채널 품질 표시의 전송 리소스 확정 방법 및 장치 |
US12/989,893 US8670447B2 (en) | 2008-04-29 | 2009-04-29 | Method and equipment for determining the transmission resource of channel quality indicator |
EP09737634.7A EP2280576B1 (en) | 2008-04-29 | 2009-04-29 | Method and equipment for determining the transmission resource of channel quality indicator |
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CN200810105422.X | 2008-04-29 | ||
CN200810105422.XA CN101572945B (zh) | 2008-04-29 | 2008-04-29 | 一种信道质量指示的发送资源确定方法与装置 |
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EP (1) | EP2280576B1 (zh) |
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US20140198701A1 (en) * | 2011-08-12 | 2014-07-17 | Telefonaktiebolaget L M Ericsson (Publ) | Deciding Whether to Send Uplink Control Signaling Based on the Active Time Status of a User Equipment Configured with Discontinuous Reception (DRX) |
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US8670447B2 (en) | 2014-03-11 |
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CN101572945A (zh) | 2009-11-04 |
EP2280576B1 (en) | 2019-02-27 |
KR101226583B1 (ko) | 2013-01-28 |
EP2280576A4 (en) | 2013-05-08 |
KR20100133477A (ko) | 2010-12-21 |
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