WO2009133758A1 - 移動通信システムにおける基地局装置、ユーザ装置及び方法 - Google Patents
移動通信システムにおける基地局装置、ユーザ装置及び方法 Download PDFInfo
- Publication number
- WO2009133758A1 WO2009133758A1 PCT/JP2009/057214 JP2009057214W WO2009133758A1 WO 2009133758 A1 WO2009133758 A1 WO 2009133758A1 JP 2009057214 W JP2009057214 W JP 2009057214W WO 2009133758 A1 WO2009133758 A1 WO 2009133758A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- control channel
- user apparatus
- shared data
- downlink
- channel
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1215—Wireless traffic scheduling for collaboration of different radio technologies
-
- 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
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
Definitions
- the present invention relates to the technical field of mobile communication, and more particularly to a mobile communication system, a base station apparatus, a user apparatus and a method using next generation mobile communication technology.
- the so-called third generation successor mobile communication system is being studied by the standardization organization 3GPP of the wideband code division multiple access (W-CDMA) system.
- W-CDMA wideband code division multiple access
- HSDPA high-speed downlink packet access
- HSUPA high-speed uplink packet access
- LTE long term evolution
- LTE-Advanced or 4th generation mobile communication system can be cited.
- FIG. 1 is a conceptual diagram of a mobile communication system.
- the mobile communication system includes a cell 50, user apparatuses 100 1 , 100 2 , and 100 3 located in the cell 50, a base station apparatus 200 that communicates wirelessly with the user apparatus, and an upper node 300 that is connected to the base station apparatus And a core network 400 connected to the upper node.
- the upper node 300 may be, for example, a radio network controller (RNC), an access gateway (aGW), a mobility management entity (MME), or the like.
- RNC radio network controller
- aGW access gateway
- MME mobility management entity
- the downlink radio access method in the LTE system is an Orthogonal Frequency Division Multiplexing (OFDM) method.
- OFDM Orthogonal Frequency Division Multiplexing
- SC-FDMA Single-Carrier Frequency Division Multiple Access
- a multicarrier scheme may be used for the uplink.
- the OFDM scheme is a multicarrier transmission scheme in which a frequency band is divided into a plurality of narrow frequency bands (subcarriers) and data is transmitted on each subcarrier. It can be expected that high-speed transmission can be realized by increasing the frequency utilization efficiency by arranging subcarriers densely while being orthogonal to each other on the frequency axis.
- the SC-FDMA scheme is a single carrier transmission scheme that divides a frequency band for each terminal and transmits using a different frequency band among a plurality of terminals.
- this method is preferable from the viewpoint of reducing the power consumption of terminals and expanding the coverage.
- communication is performed by allocating one or more resource blocks (RB: Resource Block) or resource units (RU: Resource Unit) to the user apparatus in both downlink and uplink.
- Resource blocks are shared by multiple user devices in the system.
- the base station apparatus determines to which user apparatus among a plurality of user apparatuses a resource block is allocated for each subframe (Sub-frame) that is 1 ms in LTE.
- a subframe may be referred to as a transmission time interval (TTI).
- TTI transmission time interval
- the determination of radio resource allocation is called scheduling.
- the base station apparatus transmits a shared data channel using one or more resource blocks to the user apparatus selected by scheduling. This shared data channel is called a downlink physical shared channel (PDSCH: Physical Downlink Shared CHannel).
- PDSCH Physical Downlink Shared CHannel
- PUSCH Physical Uplink Shared CHannel
- the control channel used for this signaling is called a physical downlink control channel (PDCCH: Physical Downlink Control CHannel) or a downlink L1 / L2 control channel IV (DL-L1 / L2 Control Channel).
- the downlink control signal may include a physical control format indicator channel (PCFICH: Physical Control Format Indicator CHannel), a physical hybrid ARQ indicator channel (PHICH: Physical Hybrid ARQ Indicator CHannel), and the like.
- PCFICH Physical Control Format Indicator CHannel
- PHICH Physical Hybrid ARQ Indicator CHannel
- the following information may be included in the PDCCH (for example, refer to Non-Patent Document 1): ⁇ Downlink Scheduling Grant, ⁇ Uplink Scheduling Grant, ⁇ Overload Indicator and ⁇ Transmission Power Control Command Bit.
- the downlink scheduling information includes, for example, information on the downlink shared channel, specifically, downlink resource block allocation information, user apparatus identification information (UE-ID), number of streams, precoding vector Information on (Pre-coding Vector), data size, modulation method, information on HARQ (Hybrid Automatic Repeat reQuest), etc. are included.
- UE-ID user apparatus identification information
- Pre-coding Vector precoding vector Information on
- HARQ Hybrid Automatic Repeat reQuest
- the uplink scheduling grant includes, for example, information on the uplink shared channel, specifically, uplink resource allocation information, user apparatus identification information (UE-ID), data size, modulation This includes information on a scheme, uplink transmission power information, information on a demodulation reference signal (Demodulation Reference Signal) in uplink MIMO (Uplink MIMO), and the like.
- UE-ID user apparatus identification information
- modulation This includes information on a scheme, uplink transmission power information, information on a demodulation reference signal (Demodulation Reference Signal) in uplink MIMO (Uplink MIMO), and the like.
- PCFICH is information for notifying the format of PDCCH. More specifically, the number of OFDM symbols to which PDCCH is mapped is notified by PCFICH. In LTE, the number of OFDM symbols mapped to PDCCH is 1, 2 or 3, and mapping is performed in order from the first OFDM symbol of the subframe.
- PHICH includes acknowledgment information (ACK / NACK: Acknowledgement / Non-Acknowledgement information) indicating whether or not retransmission is required for PUSCH transmitted in the uplink. Since PHICH indicates correctness for each transmission unit such as one packet, it can be basically expressed by 1 bit. Therefore, it is not advantageous for wireless transmission as it is. Therefore, several PHICHs are collected to form multi-bit information, and the information is multiplexed and spread by the code multiplexing method and transmitted by radio.
- ACK / NACK Acknowledgement / Non-Acknowledgement information
- PDCCH Physical Downlink Control Channel
- PCFICH Physical Downlink Control Channel
- PHICH Physical Downlink Control Channel
- PUSCH Physical Uplink Control CHannel
- CQI Channel Quality Indicator
- ACK / NACK Physical Uplink Control CHannel
- the CQI is used for scheduling processing, adaptive modulation / demodulation and coding (AMCS), etc. of the shared physical channel in the downlink.
- RACH random access channel
- RACH signal indicating an uplink / downlink radio resource allocation request, and the like are transmitted as necessary.
- the mobile communication system as described above includes a wireless link, a kind of signal delay that does not occur in a wired system occurs.
- This signal delay may be referred to as a radio interface delay or an air interface delay. Needless to say, this signal delay should be reduced as much as possible from the viewpoint of speeding up communication.
- Figure 2 shows the breakdown of air interface delay.
- the air interface delay includes (a) transmission delay, (b) retransmission delay, and (c) reception delay.
- the transmission delay represents a period from when transmission is started until all transmission signals are completed. For example, when transmitting data for 1 TTI, considering the delay required for transmission processing, a total period of about 1.5 TTI, for example, is required.
- the retransmission delay represents a delay required when retransmission control (HARQ) is performed.
- the reception delay represents a period required for receiving and demodulating transmitted data.
- data for 1 TTI is received, for example, a period of about 2 TTI is required. Therefore, the overall air interface delay can be estimated at about 7.5 TTI. Of these, the largest proportion is retransmission delay, and if this can be shortened, higher-speed wireless access can be realized.
- the problem of the present invention is to reduce the delay due to the air interface of the new system while ensuring backward compatibility with the old system, specifically in a state where the new system and the old system coexist at the same frequency.
- a mobile communication base station apparatus used in an area where at least the first and second systems having different packet retransmission intervals coexist is used.
- the base station apparatus includes scheduling means for determining radio resources of each user apparatus in both the first and second systems, transmission means for transmitting a downlink control channel and a downlink shared data channel, and delivery confirmation information for the downlink shared data channel
- the downlink control channel includes a plurality of control channel elements, and control information addressed to each user apparatus is associated with one or more control channel elements.
- the radio resource used by each user apparatus that has received the downlink shared data channel to transmit the uplink control channel is specified according to which control channel element the control information addressed to each user apparatus corresponds to.
- the control information addressed to the user apparatus of the second system is a control channel element different from the certain control channel element May be associated.
- the radio resource for the uplink control channel may be prepared separately for each of the first and second systems.
- control information addressed to the user apparatus of the second system is associated with the same control channel element as the control information addressed to the user apparatus of the first system, but may be spread with a different spreading code.
- Downlink signal format 2. Upstream signal format
- First operation example Second operation example 5.
- FIG. 3 shows an example of a subframe configuration.
- one subframe is 0.5 ms or 1 ms, for example, and there are 14 OFDM symbols in one subframe.
- numbers in the time axis direction (# 1, # 2, # 3,..., # 14) indicate numbers for identifying OFDM symbols
- numbers in the frequency axis direction (# 1, # 2, # 3 ,..., # L-1, #L, and L are positive integers) indicate numbers for identifying resource blocks.
- the physical downlink control channel PDCCH and the like are mapped to the M OFDM symbols at the head of the subframe. Three values of 1, 2, and 3 are set as the value of M.
- OFDM symbols other than the OFDM symbol to which the physical downlink control channel PDCCH is mapped user data, a synchronization channel (SCH), a broadcast channel (BCH: Physical Broadcast Channel), and / or persistent scheduling ( Data channels to which Persistent Scheduling is applied are mapped.
- SCH synchronization channel
- BCH Physical Broadcast Channel
- persistent scheduling Data channels to which Persistent Scheduling is applied are mapped.
- FIG. 4 schematically shows how six PDCCHs are mapped to the two OFDM symbols from the top.
- the above-described user data includes, for example, IP packets by web browsing, file transfer (FTP), voice packets (VoIP), etc., control signals for radio resource control (RRC) processing, and the like.
- User data is mapped to the DL-SCH of the transport channel and transmitted on the PDSCH of the physical channel.
- L resource blocks are prepared in the system band in the frequency direction.
- the frequency band per resource block is, for example, 180 kHz, and there are, for example, 12 subcarriers in one resource block.
- the total number L of resource blocks may be 25 when the system bandwidth is 5 MHz, 50 when the system bandwidth is 10 MHz, 100 when the system bandwidth is 20 MHz, and the like.
- a radio resource specified by a time occupied by one OFDM symbol and a frequency occupied by one subcarrier is referred to as a resource element (RE).
- RE resource element
- the user apparatus When the user apparatus receives the downlink signal, the user apparatus separates the control signal and other signals from the subframe. First, by determining the value of PCFICH, it is determined how many OFDM symbols are allocated to the control signal in the subframe. Next, the user apparatus performs blind detection to confirm whether or not a control signal addressed to the user apparatus exists. In general, blind detection is performed based on an error determination result using identification information (UE-ID) of each device for each possible combination of detection start position (specific resource element) and channel coding rate. .
- UE-ID identification information
- FIG. 5 schematically shows how PDCCHs with different channel coding rates are multiplexed in the same subframe.
- the longer drawn PDCCH is coded with a smaller channel coding rate.
- PDCCH # 2 is encoded at a channel coding rate R / 2 that is smaller than the channel coding rate R of PDCCH # 1. If there are many options for the detection start position and the channel coding rate, the calculation processing burden required for blind detection becomes excessive, and there is a concern that the burden on the user apparatus becomes large. For this reason, the start position of blind detection is limited to a specific position as indicated by an upward arrow. Thereby, the number of choices regarding the start position can be reduced.
- the candidate for the blind detection start position is set for each predetermined number of resource elements, and the predetermined number of resource elements is referred to as a control channel element (CCE).
- CCE corresponds to the mapping start position of control information.
- six control channel elements (starting positions) are indicated by upward arrows.
- a resource element is a resource unit specified by one subcarrier and one OFDM symbol.
- FIG. 6 shows an example of a signal format in the uplink.
- the control information transmission method differs depending on whether or not a resource block is allocated for data channel transmission.
- the L1 / L2 control channels (# 0, # 1, # 2, # 3) transmitted by the user to the base station apparatus are the first and second controls. It is transmitted while frequency hopping in the band.
- control information is transmitted in the resource block. In this case, the control information and the data channel are multiplexed by time division multiplexing.
- resource blocks are allocated to the user apparatuses UE11 to UE15, and their own data channels and control information are transmitted in the resource blocks.
- the reason why the first and second control bands are hopped as shown is to obtain a frequency diversity effect.
- the first and second control bands are not used simultaneously by the same user.
- the multicarrier scheme is used for the uplink, the first and second control bands may be used simultaneously by the same user, unlike the example illustrated.
- the physical downlink shared data channel (PDSCH) is transmitted, and the acknowledgment information (ACK / NACK) is transmitted on the physical uplink control channel (PUCCH).
- PUCCH physical uplink control channel
- ACK / NACK acknowledgment information
- the PUCCH (ACK / NACK) is transmitted 3TTI after reception of a new packet (after 4TTI has elapsed after transmission of a new packet is started).
- PUCCH is also used to transmit CQI, but in this embodiment, attention is paid to PUCCH that transmits ACK / NACK.
- the transmission timing of PUCCH is fixedly determined in this way, but may be set to another numerical value as will be described later.
- the base station apparatus determines whether the acknowledgment information is ACK or NACK, and in the case of NACK, retransmits the packet again after a predetermined period. For example, transmission of a retransmission packet starts after 4 TTIs have elapsed after reception of PUCCH (ACK / NACK).
- radio resources used for ACK / NACK are determined as follows.
- the physical downlink control channel includes control information for the number of multiplexed users, each of which is associated with one or more control channel elements (CCE).
- control information for N users is associated with N (CCE-1,..., CCE-N) control channel elements.
- N CCE-1,..., CCE-N
- control information for one user corresponds to one CCE, but this is not essential.
- one user's control information is mapped to one or more CCEs.
- N PUCCH resources are secured in a one-to-one correspondence with CCEs for these N users.
- the x-th control channel element (CCE-x) and the x-th PUCCH resource (#x) are associated with each other on a one-to-one basis. Therefore, for example, when PDSCH is received according to the downlink scheduling grant included in CCE-x, ACK / NACK for the PDSCH is transmitted using #x PUCCH. Whether the base station apparatus successfully received the packet (ACK) or failed by receiving and demodulating the #x PUCCH, so that the destination user when the downlink scheduling grant was transmitted in the past by CCE-x (NACK) can be known. By maintaining a one-to-one correspondence between CCE-x and #x in this way, ACK / NACK can be properly transmitted without explicit signaling (which PUCCH should be used). (It is not necessary to notify Pikach every time.)
- such an operation is performed in both the new system and the old system.
- the round trip time can be adjusted between the old and new systems so as to avoid collisions.
- the new system is trying to set RTD to 6TTI.
- this increases the RTD of the old system by 1 subframe to avoid collision. Yes (assuming that the standard specification of the old system is allowed to change the RTD).
- the RTD of the new system may be changed. As shown in FIG.
- the round trip time (RTD) It is not essential to change In this manner, retransmission packet collision can be easily avoided by relatively adjusting the RTD period between the old and new systems.
- the mobile station of the old system transmits ACK / NACK to the base station after 4TTI after receiving the physical downlink shared data channel (PDSCH), and the mobile station of the new system transmits the physical downlink shared data channel ( Assume that ACK / NACK is transmitted to the base station after 2 TTIs after receiving (PDSCH).
- the mapping position (CCE # x) of the control information (PDCCH) and the PUCCH resource (#x) A predetermined one-to-one correspondence was set between them. Therefore, another device is required to avoid the ACK / NACK collision while using the same rule in both the old and new systems. For example, the following three methods (1) to (3) can be considered.
- the scheduler of the base station configures a physical downlink control channel (PDCCH) so that such a collision does not occur in the first place. Specifically, first, scheduling related to the subframe N is performed. Then, in scheduling of subframe N + 2, it is considered that control information for allocating PDSCH to UE-A is mapped to CCE # 1 for PDSCH in subframe N. Therefore, for subframe N + 2, UE-B control information is mapped to a control channel element different from CCE # 1. As described above, the scheduler considers how control information (PDCCH) is configured for the user of the old system in the preceding subframe when determining the allocation of radio resources to the user of the new system regarding a certain subframe.
- PDCCH physical downlink control channel
- Scheduling is originally performed based on circumstances regarding a specific subframe, but in order to execute the above operation, information on past subframes is additionally required. Therefore, the scheduling processing load may increase slightly, but ACK / NACK collision can be effectively avoided.
- PUCCH physical uplink control channel
- PUCCH resources are prepared at both ends of the system band.
- 25 resource blocks (RB1 to RB25) are included in a 5 MHz system band.
- the first and 25th resource blocks (RB1, RB25) are used exclusively for the PUCCH of the old system.
- the second and twenty-fourth resource blocks (RB2, RB24) are used exclusively for the PUCCH of the new system.
- # 0 and # 1 correspond to users of the old system
- # 2 and # 3 correspond to users of the new system.
- the third method does not impose a large calculation burden on scheduling, and it is not necessary to secure resources separately for each system.
- the above collision is avoided by code-multiplexing PUCCH. That is, when ACK / NACK is transmitted in the same slot and frequency as described above, ACK / NACK from the mobile station of the old system and ACK / NACK from the mobile station of the new system are spread with different spreading codes, Code multiplexed. Any appropriate code may be used from the viewpoint of distinguishing by code multiplexing. As an example, the code may be determined as follows.
- FIG. 12 shows what code is used when mapping each of the maximum 18 pieces of ACK / NACK information (A / N # x) to any of the 18 mapping positions (CCE # x). Indicates.
- the code is specified by a Walsh code index and a cyclic shift index. It will be apparent that other code sequences may be used.
- three types of Walsh code sequences are prepared, and six different codes are prepared for each sequence by cyclically shifting each sequence. For example, a spreading code having a cyclic shift amount of 2 in the first sequence is used for A / N # 1 mapped to CCE # 9.
- the information specifying the code sequence and the information specifying the shift amount are combined, and the combination is associated with a specific control channel element. Can be notified.
- a PDSCH of a certain subframe N is allocated to a certain user apparatus UE-A, and the allocation information (control information) is mapped to CCE # 1 of PDCCH.
- the allocation information (control information) is mapped to CCE # 1 of PDCCH.
- both the UE-A of the old system and the UE-B of the new system are associated with codes having a cyclic shift amount of 4 in the first sequence (both are associated with CCE # 1). Therefore, the signals will collide with each other.
- the user of the new system is notified of another cyclic shift amount by a certain shift bit (some amount other than 4).
- the user of the old system configures the PUCCH using a code with a cyclic shift amount of 4 in the first sequence, as described above.
- the user of the new system receives the shift bit from the base station and is notified that some amount other than 4 (eg, 6) should be used as the cyclic shift amount. Therefore, the user of the new system configures the PUCCH with a code having a cyclic shift amount of 6 in the first sequence.
- each user transmits PUCCH at the same frequency at the same time, but they are appropriately transmitted because they are code-spread with different codes. This may be a spreading code number.
- the user of the new system can be notified of an appropriate code with a small number of bits by notifying a certain shift bit.
- a physical downlink control channel (PDCCH) including an uplink scheduling grant is transmitted from the base station apparatus, and a physical uplink shared data channel (PUSCH) is transmitted from the user apparatus 4 TTIs after the start of transmission. . Further, after 4 TTIs from the start of PUSCH transmission, the base station apparatus notifies the user apparatus of the necessity of retransmission. In the system considered in this description, whether retransmission is necessary: (A) When notified (with PDCCH) with an uplink scheduling grant; (B) There is a case where it is notified by PHICH. FIG. 13 shows the former case, and the latter case will be described later. PHICH indicates delivery confirmation information (ACK / NACK).
- both cases (a) and (b) may be notified, or only (b) may be made.
- both notifications are made, the necessity of retransmission notified by PDCCH is given priority, and ACK / NACK indicated by PHICH is ignored. Therefore, PHICH is effectively used in the case of (b).
- the user apparatus transmits a retransmission packet using the resource specified by PDCCH. Since the uplink scheduling grant is notified, the retransmission packet is transmitted with resources suitable for retransmission (resources that are not necessarily the same as the resources of the initial packet). Both users of the new system and users of the old system can appropriately transmit retransmission packets according to the physical downlink control channel (PDCCH).
- PDCCH physical downlink control channel
- PHICH resources are determined as follows.
- uplink-related scheduling is performed in the base station apparatus, and uplink transmission is permitted to each user apparatus, and the physical downlink control channel (PDCCH) —the part in the thick frame at the upper left in the figure—is transmitted from the base station apparatus Is done.
- the user apparatus demodulates the downlink control signal.
- the user apparatus checks whether or not the received PDCCH includes the PDCCH addressed to the user apparatus. If there is a PDCCH addressed to the device itself, prepare for communication using the specified resource block.
- radio resources are allocated as follows for transmission of the physical uplink shared channel (PUSCH) -new packet-.
- resource blocks RB3 to RB6 are allocated to user apparatus UE-2 from RB3.
- -Five resource blocks RB7 to RB11 are allocated to user apparatus UE-3 from RB7.
- -Four resource blocks RB12 to RB15 are allocated to user apparatus UE-4 from RB12.
- An uplink physical shared channel (PUSCH) is transmitted from each user apparatus using such a resource block.
- the base station apparatus receives the PUSCH from each user apparatus and determines whether retransmission is necessary. The determination result is notified to each user apparatus by PHICH. When retransmission is not required, delivery confirmation information indicating an acknowledgment (ACK) is prepared. When retransmission is required, delivery confirmation information indicating a negative acknowledgment (NACK) is prepared. The delivery confirmation information is prepared for every user who has transmitted the PUSCH. In the current example, since five users UE-1 to UE-5 transmit uplink physical shared channels, delivery confirmation information for five users is prepared.
- the PHICH resources are reserved by the total number of resource blocks.
- 19 PHICH resources (PHICH- # 0 to # 18) are prepared. Of these 19 resources, the resource corresponding to the lowest number of resource blocks allocated to each user apparatus is used. Since resource blocks are allocated to UE-1 in order from resource block RB0, delivery confirmation information of UE-1 is written in PHICH- # 0. Since resource blocks are allocated to UE-2 in order from resource block RB3, UE-2 acknowledgment information is written to PHICH- # 3. Similarly, the UE-3 acknowledgment information is written in PHICH- # 7. UE-4 acknowledgment information is written to PHICH-12. UE-5 acknowledgment information is written in PHICH- # 16. The PHICH- # 1 to # 19 prepared in this way are notified to each user apparatus.
- Each user apparatus reads the PHICH associated with the user apparatus from the downlink control signal.
- the read timing is a timing after 4 TTIs after the start of transmission of a new packet (PUSCH) from the own device.
- Each user apparatus stores in which resource block the PUSCH is transmitted.
- PUSCH is transmitted in the xth and subsequent resource blocks, the delivery confirmation information of the user is written in the xth PHICH (PHICH-x). Therefore, The user apparatus UE-1 determines whether or not retransmission is necessary by reading PHICH- # 0.
- User apparatus UE-2 reads PHICH- # 3 and determines whether or not retransmission is necessary.
- User apparatus UE-3 reads PHICH- # 7 and determines whether or not retransmission is necessary.
- the user apparatus UE-4 reads PHICH- # 12 and determines whether retransmission is necessary.
- User apparatus UE-5 reads PHICH- # 16 and determines whether or not retransmission is necessary.
- the user apparatus completes transmission related to the process number and prepares for subsequent communication.
- the retransmission packet is transmitted 8 TTI after the start of transmission of the initial packet (4 TTI after reception of PHICH- # x).
- the radio resource for retransmission may be the same as that of the new packet, or may be different from that. In the latter case, how different resources are used is predetermined.
- PHICH corresponding to the resource block used for the physical uplink shared channel (PUSCH) is prepared one-to-one, the base station apparatus and the user apparatus do not need any signaling. Therefore, PHICH can be transmitted and received appropriately.
- PUSCH physical uplink shared channel
- FIG. 15 is a diagram for explaining the operation when the old system and the new system coexist.
- the necessity of retransmission may be notified by PDCCH, or only PHICH may be notified without PDCCH (in this context, the term is defined so that PDCCH does not include PHICH) .
- a retransmission packet is transmitted 4 TTIs after receiving PHICH (in the case of NACK).
- a retransmission packet is transmitted 2 TTI after receiving PHICH (in the case of NACK).
- the user of the old system and the user of the new system transmit retransmission packets in the same subframe. However, it is unclear whether or not the user of the new system will retransmit thereafter when trying to secure resources for retransmission of the user of the old system. Therefore, it is not easy to properly schedule all PUSCHs for both new and old systems without any conditions.
- resources (bandwidth) for the old system and resources for the new system are prepared separately.
- effective use of resources is somewhat hindered, but the PUSCH can be reliably transmitted without causing a collision.
- the scheduler of the base station apparatus performs scheduling for resources secured in the old system in a certain subframe.
- the scheduler schedules resources reserved in the new system in the subframe. In this case, if there are surplus resources reserved for the old system, the surplus may be used by the user of the new system.
- FIG. 16 shows a base station apparatus used in an embodiment of the present invention.
- FIG. 5 shows a scheduler 52, a lower layer control channel generation unit 53, an upper layer control information generation unit 54, a broadcast information generation unit 55, a downlink data channel generation unit 56, a multiplexing unit 57, and an uplink control information extraction unit 58. ing.
- the scheduler 52 performs radio resource scheduling. Scheduling may be done with any suitable algorithm known in the art. As an example, the scheduling may be performed by a maximum C / I method or a proportional fairness method.
- the downlink and / or uplink scheduling information is given to the low layer control channel generation unit 53. Since the scheduling information indicates the correspondence between the information to be transmitted and the frequency and time, the correspondence is also given to the multiplexing unit 57 as mapping information.
- the scheduler 52 also determines the data modulation scheme and channel coding rate applied to the data channel, and provides them to the downlink data channel generator 56 as AMC information. When the first operation example (1) is performed, the scheduler 52 performs downlink scheduling so that ACK / NACKs of users of the old and new systems do not collide.
- the low layer control channel generation unit 53 prepares control information to be transmitted through, for example, a downlink L1 / L2 control channel, and performs predetermined channel coding and data modulation on the control information, thereby providing a control information such as an L1 / L2 control channel. Create a low layer control channel.
- shift bit information information indicating the cyclic shift amount
- the upper layer control information generation unit 54 prepares information such as L3 control information and supplies the information to the downlink data channel generation unit 56.
- the broadcast information generation unit 55 prepares broadcast information (BCH) to be broadcast to the user equipment in the cell, and provides it to the downlink data channel generation unit 56.
- BCH broadcast information
- Information such as the fact that PUCCH resources are prepared separately in the old system and the new system, and / or that PUSCH resources are prepared separately in the old system and the new system, are reported as higher layer control information or broadcasted. It may be notified to the user apparatus as information.
- the downlink data channel generation unit 56 receives user data, higher layer control information, and broadcast information, and generates a downlink data channel by performing data modulation and channel coding on a signal including them.
- the multiplexing unit 57 multiplexes the low layer control channel and the downlink data channel. Multiplexing is generally done in terms of time division multiplexing and frequency division multiplexing.
- the uplink control information extraction unit 58 extracts the uplink control information from the signal received on the uplink and restores it.
- FIG. 17 shows a user equipment used in one embodiment of the present invention.
- FIG. 17 shows a low layer control information restoration unit 61, a downlink data channel restoration unit 62, an uplink data channel generation unit 63, an ACK / NACK resource determination unit 64, and an ACK / NACK generation unit 65.
- the low layer control information restoration unit 61 decodes and demodulates the low layer control channel received from the base station apparatus, and extracts control information.
- the control information includes uplink / downlink scheduling information, packet number, puncture pattern, ACK / NACK for PDSCH, and the like.
- the downlink data channel restoration unit 62 extracts the downlink data channel according to the downlink scheduling information, performs demodulation and decoding, and restores the downlink data channel.
- the uplink data channel generation unit 63 generates an uplink data channel according to the uplink scheduling grant.
- the uplink data channel creates a new or retransmission uplink data channel according to the retransmission control information (ACK / NACK) notified from the low layer control information restoring unit 61.
- the ACK / NACK resource determination unit 64 determines which resource is used for ACK / NACK notification for each uplink and downlink.
- Resources used for transmission of ACK / NACK for the physical downlink shared channel (PDSCH) are determined based on where the control information of the PDSCH is mapped (CCE).
- Resources used for receiving ACK / NACK for the physical uplink shared channel (PUSCH) are determined based on which resource block the PUSCH is transmitted.
- the ACK / NACK generation unit 65 prepares delivery confirmation information (ACK or NACK) related to PUSCH.
- the present invention may be applied to any appropriate mobile communication system used in an area where systems having different retransmission periods coexist.
- the present invention may be applied to an HSDPA / HSUPA system W-CDMA system, an LTE system, an IMT-Advanced system, a WiMAX system, a Wi-Fi system, and the like.
Abstract
Description
・下りスケジューリンググラント(Downlink Scheduling Grant)、
・上りリンクスケジューリンググラント(Uplink Scheduling Grant)、
・オーバロードインジケータ(Overload Indicator)及び
・送信電力制御コマンドビット(Transmission Power Control Command Bit)。
2.上り信号フォーマット
3.第1の動作例
4.第2の動作例
5.基地局装置
6.ユーザ装置
図3はサブフレーム構成の一例を示す。下りリンク伝送では、1サブフレームは例えば0.5msや1ms等であり、1サブフレームの中に14個のOFDMシンボルが存在する。図3において、時間軸方向の番号(#1,#2,#3,...,#14)はOFDMシンボルを識別する番号を示し、周波数軸方向の番号(#1,#2,#3,...,#L-1,#L,Lは正の整数)はリソースブロックを識別する番号を示す。
図6は上りリンクにおける信号フォーマット例を示す。図示の例では、データチャネルの伝送用にリソースブロックが割り当てられているか否かで制御情報の伝送法が異なる。データチャネルの伝送用にリソースブロックが割り当てられていなかった場合、ユーザが基地局装置に送信するL1/L2制御チャネル(#0,#1,#2,#3)は、第1及び第2制御帯域で周波数ホッピングしながら送信される。しかしながら、データチャネルの伝送用にリソースブロックが割り当てられていた場合、制御情報はそのリソースブロックで伝送される。この場合、制御情報とデータチャネルは時分割多重方式で多重される。図示の例では、ユーザ装置UE11~UE15にはリソースブロックが割り当てられ、そのリソースブロックで各自のデータチャネル及び制御情報が伝送される。なお、第1及び第2制御帯域を図示のようにホッピングさせているのは、周波数ダイバーシチ効果を得るためである。上りリンクにシングルキャリア方式が使用される場合、第1及び第2制御帯域は同一ユーザにより同時には使用されない。しかしながら、上りリンクにマルチキャリア方式が使用される場合、図示の例とは異なり、第1及び第2制御帯域が同一ユーザにより同時に使用されてもよい。
以下に説明される動作例では、再送期間の異なる新旧2つのシステムが同じ地域でサービスを提供しているものとする。旧システムの典型例はLTE方式の移動通信システムであるが、他のシステムでもよい。新システムの典型例はLTEアドバンストシステムであるが、他のシステムでもよい。説明の便宜上、新旧2つのシステムが登場するが、このことは本発明に必須でない。再送期間又はRTD(Round Trip Delay)の異なる複数のシステムが共存する場合に本発明は広く適用可能である。
次に、ユーザ装置から物理上りリンク共有チャネル(PUSCH)が送信される場合を説明する。
(a)上りスケジューリンググラントと共に(PDCCHで)通知される場合と、
(b)PHICHで通知される場合と
がある。図13は前者の場合を示し、後者の場合については後述される。PHICHは、送達確認情報(ACK/NACK)を示す。本説明で考察されるシステムでは、(a)の場合と(b)の場合双方の通知がなされるかもしれないし、(b)だけがなされるかもしれない。双方の通知がなされた場合、PDCCHで通知された再送の要否が優先され、PHICHで示されているACK/NACKは無視される。従って、PHICHが有意義に活用されるのは、(b)の場合である。
ユーザ装置UE-1は、PHICH-#0を読み取ることで、再送の要否を判定する。
図16は、本発明の一実施例で使用される基地局装置を示す。図5には、スケジューラ52、低レイヤ制御チャネル生成部53、上位レイヤ制御情報生成部54、報知情報生成部55、下りデータチャネル生成部56、多重部57及び上り制御情報抽出部58が示されている。
図17は、本発明の一実施例で使用されるユーザ装置を示す。図17には、低レイヤ制御情報復元部61、下りデータチャネル復元部62、上りデータチャネル生成部63、ACK/NACKリソース判定部64及びACK/NACK生成部65が示されている。
1001,1002,1003 ユーザ装置
200 基地局装置
300 上位ノード
400 コアネットワーク
52 スケジューラ
53 低レイヤ制御チャネル生成部
54 上位レイヤ制御情報生成部
55 報知情報生成部
56 下りデータチャネル生成部
57 多重部
58 上り制御情報抽出部
61 低レイヤ制御情報復元部
62 下りデータチャネル復元部
63 上りデータチャネル生成部
64 ACK/NACKリソース判定部
65 ACK/NACK生成部
Claims (13)
- パケットの再送間隔の異なる少なくとも第1及び第2システムが共存する地域で使用される移動通信用の基地局装置であって、
第1及び第2システム双方の各ユーザ装置の無線リソースを決定するスケジューリング手段と、
下り制御チャネル及び下り共有データチャネルを送信する送信手段と、
前記下り共有データチャネルに対する送達確認情報を含む上り制御チャネルを受信する受信手段と、
を有し、前記下り制御チャネルは複数の制御チャネルエレメントを含み、各ユーザ装置宛の制御情報は1つ以上の制御チャネルエレメントに対応付けられ、
下り共有データチャネルを受信した各ユーザ装置が上り制御チャネルを送信するのに使用する無線リソースは、前記各ユーザ装置宛の制御情報がどの制御チャネルエレメントに対応していたかに応じて指定され、
前記第1システムのユーザ装置に或るサブフレームの下り共有データチャネルが割り当てられ、該ユーザ装置宛の制御情報が或る制御チャネルエレメントに割り当てられていた場合であって、該或るサブフレームから所定期間後のサブフレームの下り共有データチャネルが、前記第2システムのユーザ装置に割り当てられる場合、該第2システムのユーザ装置宛の制御情報は、前記或る制御チャネルエレメントとは別の制御チャネルエレメントに対応付けられるようにスケジューリングを行う基地局装置。 - パケットの再送間隔の異なる少なくとも第1及び第2システムが共存する地域で使用される移動通信用の基地局装置であって、
第1及び第2システム双方の各ユーザ装置の無線リソースを決定するスケジューリング手段と、
下り制御チャネル及び下り共有データチャネルを送信する送信手段と、
前記下り共有データチャネルに対する送達確認情報を含む上り制御チャネルを受信する受信手段と、
を有し、前記下り制御チャネルは複数の制御チャネルエレメントを含み、各ユーザ装置宛の制御情報は1つ以上の制御チャネルエレメントに対応付けられ、
下り共有データチャネルを受信した各ユーザ装置が上り制御チャネルを送信するのに使用する無線リソースは、前記各ユーザ装置宛の制御情報がどの制御チャネルエレメントに対応していたかに応じて指定され、
上り制御チャネル用の無線リソースは、前記第1及び第2システム各々に別個に用意されるようにした基地局装置。 - パケットの再送間隔の異なる少なくとも第1及び第2システムが共存する地域で使用される移動通信用の基地局装置であって、
第1及び第2システム双方の各ユーザ装置の無線リソースを決定するスケジューリング手段と、
下り制御チャネル及び下り共有データチャネルを送信する送信手段と、
前記下り共有データチャネルに対する送達確認情報を含む上り制御チャネルを受信する受信手段と、
を有し、前記下り制御チャネルは複数の制御チャネルエレメントを含み、各ユーザ装置宛の制御情報は1つ以上の制御チャネルエレメントに対応付けられ、
下り共有データチャネルを受信した各ユーザ装置が上り制御チャネルを送信するのに使用する無線リソースは、前記各ユーザ装置宛の制御情報がどの制御チャネルエレメントに対応していたかに応じて指定され、
前記第1システムのユーザ装置に或るサブフレームの下り共有データチャネルが割り当てられ、該ユーザ装置宛の制御情報が或る制御チャネルエレメントに割り当てられていた場合であって、該或るサブフレームから所定期間後のサブフレームの下り共有データチャネルが、前記第2システムのユーザ装置に割り当てられる場合、前記第2システムのユーザ装置宛の制御情報には、前記第1システムのユーザ装置宛の制御情報と同じ制御チャネルエレメントが対応付けられるが、異なる拡散符号で拡散されるようにした基地局装置。 - 前記拡散符号の相違は、拡散符号を指定する符号番号のオフセット量で指定される請求項3に記載の基地局装置。
- パケットの再送間隔の異なる少なくとも第1及び第2システムが共存する地域で使用される移動通信用の基地局装置であって、
第1及び第2システム双方の各ユーザ装置の無線リソースを決定するスケジューリング手段と、
下り制御チャネルを送信する送信手段と、
前記スケジューリング情報に従って送信された上り共有データチャネルを受信する手段と、
を有し、前記上り共有データチャネルに対する送達確認情報は、スケジューリング情報を含む下り制御チャネルにより、又はスケジューリング情報を含まない下り制御チャネルによりユーザ装置に通知され、
前記送達確認情報は、前記第1システムの場合より前記第2システムの場合の方が短期間の内に送信され、
上り共有データチャネル用の無線リソースは、前記第1及び第2システム各々で別個に確保され、
各ユーザ装置へ通知される送達確認情報は、各ユーザ装置がどのリソースブロックで上り共有データ信号を送信したかに応じて異なる周波数に対応付けられ、
前記第1システムのユーザ装置宛の送達確認情報と前記第2システムのユーザ装置宛の送達確認情報とが同じ周波数に対応付けられる場合、各送達確認情報は異なる拡散符号で拡散されるようにした基地局装置。 - 前記拡散符号の相違は、拡散符号を指定する符号番号のオフセット量で指定される請求項5に記載の基地局装置。
- パケットの再送間隔の異なる少なくとも第1及び第2移動通信システムが共存する地域で使用される移動通信用のユーザ装置であって、
下り制御チャネル及び下り共有データチャネルを受信する受信手段と、
前記下り共有データチャネルに対する送達確認情報を含む上り制御チャネルを送信する送信手段と、
を有し、前記下り制御チャネルは複数の制御チャネルエレメントを含み、各ユーザ装置宛の制御情報は1つ以上の制御チャネルエレメントに対応付けられ、
前記上り制御チャネルに使用される無線リソースは、当該ユーザ装置宛の制御情報がどの制御チャネルエレメントに対応していたかに応じて指定され、
上り制御チャネル用の無線リソースは、前記第1及び第2システム各々に別個に用意されるようにしたユーザ装置。 - パケットの再送間隔の異なる少なくとも第1及び第2システムが共存する地域で使用される移動通信用のユーザ装置であって、
下り制御チャネル及び下り共有データチャネルを受信する受信手段と、
前記下り共有データチャネルに対する送達確認情報を含む上り制御チャネルを送信する送信手段と、
を有し、前記下り制御チャネルは複数の制御チャネルエレメントを含み、各ユーザ装置宛の制御情報は1つ以上の制御チャネルエレメントに対応付けられ、
前記上り制御チャネルに使用される無線リソースは、当該ユーザ装置宛の制御情報がどの制御チャネルエレメントに対応していたかに応じて指定され、
前記第1システムのユーザ装置に或るサブフレームの下り共有データチャネルが割り当てられ、該ユーザ装置宛の制御情報が或る制御チャネルエレメントに割り当てられていた場合であって、該或るサブフレームから所定期間後のサブフレームの下り共有データチャネルが、前記第2システムの当該ユーザ装置に割り当てられる場合、当該ユーザ装置宛の制御情報には、前記第1システムのユーザ装置宛の制御情報と同じ制御チャネルエレメントが対応付けられるが、異なる拡散符号で拡散されるユーザ装置。 - 前記拡散符号の相違は、拡散符号を指定する符号番号のオフセット量で指定される請求項8に記載のユーザ装置。
- パケットの再送間隔の異なる少なくとも第1及び第2システムが共存する地域で使用される方法であって、
前記第1及び第2システム双方の各ユーザ装置の無線リソースを基地局装置で決定するスケジューリングステップと、
下り制御チャネル及び下り共有データチャネルがユーザ装置へ伝送されるステップと、
前記下り共有データチャネルに対する送達確認情報を含む上り制御チャネルが基地局装置で受信されるステップと、
を有し、前記下り制御チャネルは複数の制御チャネルエレメントを含み、各ユーザ装置宛の制御情報は1つ以上の制御チャネルエレメントに対応付けられ、
下り共有データチャネルを受信した各ユーザ装置が上り制御チャネルを送信するのに使用する無線リソースは、前記各ユーザ装置宛の制御情報がどの制御チャネルエレメントに対応していたかに応じて指定され、
前記第システムのユーザ装置に或るサブフレームの下り共有データチャネルが割り当てられ、該ユーザ装置宛の制御情報が或る制御チャネルエレメントに割り当てられていた場合であって、該或るサブフレームから所定期間後のサブフレームの下り共有データチャネルが、前記第2システムのユーザ装置に割り当てられる場合、該第2システムのユーザ装置宛の制御情報は、前記或る制御チャネルエレメントとは別の制御チャネルエレメントに対応付けられるようにした方法。 - パケットの再送間隔の異なる少なくとも第1及び第2システムが共存する地域で使用される方法であって、
前記第1及び第2システム双方の各ユーザ装置の無線リソースを基地局装置で決定するスケジューリングステップと、
下り制御チャネル及び下り共有データチャネルがユーザ装置へ伝送されるステップと、
前記下り共有データチャネルに対する送達確認情報を含む上り制御チャネルが基地局装置で受信されるステップと、
を有し、前記下り制御チャネルは複数の制御チャネルエレメントを含み、各ユーザ装置宛の制御情報は1つ以上の制御チャネルエレメントに対応付けられ、
下り共有データチャネルを受信した各ユーザ装置が上り制御チャネルを送信するのに使用する無線リソースは、前記各ユーザ装置宛の制御情報がどの制御チャネルエレメントに対応していたかに応じて指定され、
上り制御チャネル用の無線リソースは、前記第1及び第2システム各々に別個に用意されるようにした方法。 - パケットの再送間隔の異なる少なくとも第1及び第2システムが共存する地域で使用される方法であって、
前記第1及び第2システム双方の各ユーザ装置の無線リソースを基地局装置で決定するスケジューリングステップと、
スケジューリング情報を含む下り制御チャネルと、下り共有データチャネルとがユーザ装置へ電送されるステップと、
前記下り共有データチャネルに対する送達確認情報を含む上り制御チャネルが基地局装置で受信されるステップと、
を有し、前記下り制御チャネルは複数の制御チャネルエレメントを含み、各ユーザ装置宛の制御情報は1つ以上の制御チャネルエレメントに対応付けられ、
下り共有データチャネルを受信した各ユーザ装置が上り制御チャネルを送信するのに使用する無線リソースは、前記各ユーザ装置宛の制御情報がどの制御チャネルエレメントに対応していたかに応じて指定され、
前記第1システムのユーザ装置に或るサブフレームの下り共有データチャネルが割り当てられ、該ユーザ装置宛の制御情報が或る制御チャネルエレメントに割り当てられていた場合であって、該或るサブフレームから所定期間後のサブフレームの下り共有データチャネルが、前記第2システムのユーザ装置に割り当てられる場合、前記第2システムのユーザ装置宛の制御情報には、前記第1システムのユーザ装置宛の制御情報と同じ制御チャネルエレメントが対応付けられるが、異なる拡散符号で拡散されるようにした方法。 - パケットの再送間隔の異なる少なくとも第1及び第22つの移動通信システムが共存する地域で使用される方法であって、
前記第1及び第2システム双方の各ユーザ装置の無線リソースを基地局装置で決定するスケジューリングステップと、
下り制御チャネルがユーザ装置へ伝送されるステップと、
前記スケジューリング情報に従って送信された上り共有データチャネルが基地局装置で受信されるステップと、
を有し、前記上り共有データチャネルに対する送達確認情報は、スケジューリング情報を含む下り制御チャネルにより、又はスケジューリング情報を含まない下り制御チャネルによりユーザ装置に通知され、
前記送達確認情報は、前記第1システムの場合より前記第2システムの場合の方が短期間の内に送信され、
上り共有データチャネル用の無線リソースは、前記第1及び第2システム各々で別個に確保され、
各ユーザ装置へ通知される送達確認情報は、各ユーザ装置がどのリソースブロックで上り共有データ信号を送信したかに応じて異なる周波数に対応付けられ、
前記第1システムのユーザ装置宛の送達確認情報と前記第2システムのユーザ装置宛の送達確認情報とが同じ周波数に対応付けられる場合、各送達確認情報は異なる拡散符号で拡散されるようにした方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009801251930A CN102077670B (zh) | 2008-05-02 | 2009-04-08 | 移动通信系统中的基站装置、用户装置以及方法 |
US12/990,605 US20110116465A1 (en) | 2008-05-02 | 2009-04-08 | Base station apparatus, user equipment and method in mobile communication system |
EP20090738695 EP2276303A1 (en) | 2008-05-02 | 2009-04-08 | Base station device, user device and method for mobile communication system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008120659A JP5283423B2 (ja) | 2008-05-02 | 2008-05-02 | 移動通信システムにおける基地局装置、ユーザ装置及び方法 |
JP2008-120659 | 2008-05-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009133758A1 true WO2009133758A1 (ja) | 2009-11-05 |
Family
ID=41254978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/057214 WO2009133758A1 (ja) | 2008-05-02 | 2009-04-08 | 移動通信システムにおける基地局装置、ユーザ装置及び方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20110116465A1 (ja) |
EP (1) | EP2276303A1 (ja) |
JP (1) | JP5283423B2 (ja) |
KR (1) | KR20110013425A (ja) |
CN (1) | CN102077670B (ja) |
WO (1) | WO2009133758A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102595633A (zh) * | 2011-01-17 | 2012-07-18 | 华为技术有限公司 | 随机接入方法、用户设备及网络设备 |
CN102739362A (zh) * | 2012-06-21 | 2012-10-17 | 华为技术有限公司 | 一种数据响应方法及装置 |
CN103081548A (zh) * | 2010-09-03 | 2013-05-01 | 松下电器产业株式会社 | 终端、基站以及信号发送控制方法 |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5038060B2 (ja) * | 2007-08-14 | 2012-10-03 | 株式会社エヌ・ティ・ティ・ドコモ | 移動通信システム、基地局装置、ユーザ装置及び方法 |
EP2320615B1 (en) * | 2008-08-19 | 2013-06-19 | Electronics and Telecommunications Research Institute | Method and apparatus for transmitting acknowledgement and negative acknowledgement |
US8325661B2 (en) | 2008-08-28 | 2012-12-04 | Qualcomm Incorporated | Supporting multiple access technologies in a wireless environment |
EP3094145B1 (en) | 2008-09-29 | 2019-06-19 | Sun Patent Trust | Cce+ number allocation method and base station device |
US8665809B2 (en) * | 2009-06-15 | 2014-03-04 | Qualcomm Incorporated | Systems and methods for sending power control information |
WO2011099135A1 (ja) * | 2010-02-12 | 2011-08-18 | 富士通株式会社 | 移動通信システム、基地局、移動局および無線通信方法 |
US8934421B2 (en) | 2010-05-12 | 2015-01-13 | Qualcomm Incorporated | Acknowledgment transmissions under cross-subframe resource allocation in LTE-A |
US9197388B2 (en) | 2010-05-25 | 2015-11-24 | Kyocera Corporation | Radio base station and control method for the same |
JP5709884B2 (ja) | 2010-10-08 | 2015-04-30 | パナソニック インテレクチュアル プロパティ コーポレーション オブアメリカPanasonic Intellectual Property Corporation of America | 基地局、端末、送信方法、及び受信方法 |
CN103503536B (zh) | 2011-04-29 | 2017-10-10 | 诺基亚通信公司 | 用于在无线网络中处理上行链路控制数据的方法和设备 |
WO2012173433A2 (ko) * | 2011-06-15 | 2012-12-20 | 엘지전자 주식회사 | 제어 정보를 전송하는 방법 및 이를 위한 장치 |
US20130083746A1 (en) * | 2011-09-30 | 2013-04-04 | Interdigital Patent Holdings, Inc. | Method and apparatus for allocating resources for an enhanced physical hybrid automatic repeat request indicator channel |
WO2013054979A1 (ko) * | 2011-10-12 | 2013-04-18 | 엘지에릭슨 주식회사 | 하향 링크 제어 정보 전송 방법 및 장치 |
WO2013073809A1 (en) * | 2011-11-14 | 2013-05-23 | Lg Electronics Inc. | Method and apparatus for controlling network access in a wireless communication system |
CN103891373B (zh) * | 2012-09-26 | 2018-01-09 | 华为技术有限公司 | 下行数据传输方法、基站及用户设备 |
WO2014064892A1 (ja) | 2012-10-26 | 2014-05-01 | パナソニック株式会社 | 端末装置、基地局装置、受信方法及び送信方法 |
WO2014068839A1 (ja) * | 2012-10-30 | 2014-05-08 | パナソニック株式会社 | 端末装置、基地局装置、受信方法及び送信方法 |
CN104737484B (zh) * | 2013-01-31 | 2018-03-23 | Lg 电子株式会社 | 在无线通信系统中发送接收肯定应答的方法和装置 |
US9955467B2 (en) * | 2013-06-27 | 2018-04-24 | Telefonaktiebolaget L M Ericsson (Publ) | Method and BS for transmitting control information to UE, and method and UE for handling control information |
US11019620B2 (en) | 2014-05-19 | 2021-05-25 | Qualcomm Incorporated | Apparatus and method for inter-band pairing of carriers for time division duplex transmit- and receive-switching and its application to multiplexing of different transmission time intervals |
US11432305B2 (en) * | 2014-05-19 | 2022-08-30 | Qualcomm Incorporated | Apparatus and method for synchronous multiplexing and multiple access for different latency targets utilizing thin control |
CN107926019A (zh) * | 2015-08-31 | 2018-04-17 | 株式会社Ntt都科摩 | 用户终端、无线基站以及无线通信方法 |
JP6170112B2 (ja) * | 2015-10-21 | 2017-07-26 | ノキア ソリューションズ アンド ネットワークス オサケユキチュア | 無線ネットワークにおけるアップリンク制御データの処理方法及び装置 |
FI3605885T3 (fi) * | 2017-03-24 | 2023-01-13 | Menetelmä, laite ja järjestelmä langattoman viestintäjärjestelmän ohjauskanavan lähettämiseksi ja vastaanottamiseksi |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008120659A (ja) | 2006-11-16 | 2008-05-29 | National Institute For Materials Science | 二ホウ化マグネシウム超伝導体の製造方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20050081566A (ko) * | 2004-02-14 | 2005-08-19 | 삼성전자주식회사 | 고속 순방향 패킷 데이터를 전송하는 이동통신시스템에서압축 모드에 따른 복합 재전송을 수행하는 방법 |
KR20060123654A (ko) * | 2004-03-30 | 2006-12-01 | 마츠시타 덴끼 산교 가부시키가이샤 | 기지국 장치, 이동국 장치 및 데이터 채널의 스케줄링 방법 |
US8780856B2 (en) * | 2007-09-18 | 2014-07-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Inter-system handoffs in multi-access environments |
-
2008
- 2008-05-02 JP JP2008120659A patent/JP5283423B2/ja not_active Expired - Fee Related
-
2009
- 2009-04-08 KR KR20107026647A patent/KR20110013425A/ko not_active Application Discontinuation
- 2009-04-08 EP EP20090738695 patent/EP2276303A1/en not_active Withdrawn
- 2009-04-08 CN CN2009801251930A patent/CN102077670B/zh not_active Expired - Fee Related
- 2009-04-08 US US12/990,605 patent/US20110116465A1/en not_active Abandoned
- 2009-04-08 WO PCT/JP2009/057214 patent/WO2009133758A1/ja active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008120659A (ja) | 2006-11-16 | 2008-05-29 | National Institute For Materials Science | 二ホウ化マグネシウム超伝導体の製造方法 |
Non-Patent Citations (2)
Title |
---|
NEC GROUP: "Downlink ACK/NACK signalling for E-UTRA", 3GPP TSG-RAN WG1 #50BIS, 8 October 2007 (2007-10-08), XP050107695, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/TSG_RAN/WG1_RLl/TSGR1_50b/DOCS/R1-074163.zip> [retrieved on 20090422] * |
SAMSUNG: "PHICH linking to downlink CCE", 3GPP TSG-RAN WORKING GROUP 1 #51 BIS, 14 January 2008 (2008-01-14), XP050108566, Retrieved from the Internet <URL:http://www.3gpp.org/FTP/tsg_ran/WG1_RL1/TSGRl_51b/Docs/R1/080023.zip> [retrieved on 20090422] * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103081548A (zh) * | 2010-09-03 | 2013-05-01 | 松下电器产业株式会社 | 终端、基站以及信号发送控制方法 |
CN102595633A (zh) * | 2011-01-17 | 2012-07-18 | 华为技术有限公司 | 随机接入方法、用户设备及网络设备 |
WO2012097696A1 (zh) * | 2011-01-17 | 2012-07-26 | 华为技术有限公司 | 随机接入方法、用户设备及网络设备 |
CN102595633B (zh) * | 2011-01-17 | 2014-10-08 | 华为技术有限公司 | 随机接入方法、用户设备及网络设备 |
US9301322B2 (en) | 2011-01-17 | 2016-03-29 | Huawei Technologies Co., Ltd. | Random access method, user equipment and network equipment |
CN102739362A (zh) * | 2012-06-21 | 2012-10-17 | 华为技术有限公司 | 一种数据响应方法及装置 |
CN102739362B (zh) * | 2012-06-21 | 2015-08-19 | 华为技术有限公司 | 一种数据响应方法及装置 |
Also Published As
Publication number | Publication date |
---|---|
JP5283423B2 (ja) | 2013-09-04 |
KR20110013425A (ko) | 2011-02-09 |
US20110116465A1 (en) | 2011-05-19 |
CN102077670B (zh) | 2013-10-30 |
CN102077670A (zh) | 2011-05-25 |
JP2009272827A (ja) | 2009-11-19 |
EP2276303A1 (en) | 2011-01-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5283423B2 (ja) | 移動通信システムにおける基地局装置、ユーザ装置及び方法 | |
JP5069147B2 (ja) | 移動通信システム、基地局装置、ユーザ装置及び方法 | |
US10834763B2 (en) | Method and apparatus for handling overlap of different channels in wireless communication system | |
JP5417319B2 (ja) | 基地局装置及び通信制御方法 | |
CN107431588B (zh) | 用于短tti的时间频率资源的分配方法及其设备 | |
JP5103535B2 (ja) | 移動通信システムにおける基地局装置及び方法 | |
JP5171271B2 (ja) | 移動通信システム、基地局装置、ユーザ装置及び方法 | |
JP5023123B2 (ja) | 無線基地局及び移動通信方法 | |
US20110211522A1 (en) | Method and Apparatus for Performing HARQ Process in Wireless Communication System | |
WO2014176972A1 (zh) | D2d通信中的数据发送方法和设备 | |
JP5069040B2 (ja) | 移動通信システムにおける基地局装置及び通信方法 | |
WO2014019790A1 (en) | Control channels for wireless communication | |
TR201807449T4 (tr) | Yarı kalıcı zaman planlaması için (H)ARQ. | |
KR20100014732A (ko) | 기지국장치, 이동국 및 무선통신 시스템 그리고 통신제어방법 | |
JP2009232132A (ja) | 移動局及び基地局装置 | |
JP2011217383A (ja) | 移動通信方法、移動局及び無線基地局 | |
CN110999151B (zh) | 用于无线通信中的资源分配的方法和装置 | |
JP5548254B2 (ja) | 基地局装置、ユーザ装置、通信システム及び通信方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980125193.0 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09738695 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: 2009738695 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 20107026647 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12990605 Country of ref document: US |