WO2009136710A1 - 무선 통신 시스템의 자원 할당 방법 및 이를 위한 무선 통신 시스템 - Google Patents
무선 통신 시스템의 자원 할당 방법 및 이를 위한 무선 통신 시스템 Download PDFInfo
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- WO2009136710A1 WO2009136710A1 PCT/KR2009/002321 KR2009002321W WO2009136710A1 WO 2009136710 A1 WO2009136710 A1 WO 2009136710A1 KR 2009002321 W KR2009002321 W KR 2009002321W WO 2009136710 A1 WO2009136710 A1 WO 2009136710A1
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- transmission resource
- resource allocation
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- allocation message
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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
- H04L1/0025—Transmission of mode-switching indication
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1004—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's to protect a block of data words, e.g. CRC or checksum
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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
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0072—Error control for data other than payload data, e.g. control data
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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
- H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
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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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1887—Scheduling and prioritising arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/10—Integrity
- H04W12/106—Packet or message integrity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/04—Error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
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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
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/12—Applying verification of the received information
- H04L63/123—Applying verification of the received information received data contents, e.g. message integrity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Definitions
- the present invention relates to a method for allocating a resource in a wireless communication system and a wireless communication system for the same, and more particularly, to a method for allocating resources for preventing an error when allocating resources of a wireless communication system and a wireless communication system for the same.
- UMTS Universal Mobile Telecommunication Service
- GSM Global System for Mobile Communications
- GPRS General Packet Radio Services
- CDMA Wideband Code Division Multiple Access
- LTE Long Term Evolution
- 3GPP 3rd Generation Partnership Project
- LTE Long Term Evolution
- 3GPP 3rd Generation Partnership Project
- LTE is a technology that implements high-speed packet-based communication having a transmission rate of up to about 100 Mbps, and aims to commercialize it in 2010.
- various schemes are discussed. For example, a scheme of reducing the number of nodes located on a communication path by simplifying a network structure, or approaching wireless protocols as close as possible to a wireless channel are under discussion.
- SPS semi-persistent transmission resource allocation
- the base station indicates to the user terminal the size of the MAC PDU to be transmitted through the semi-persistent transmission resources and semi-persistent transmission resources.
- the user terminal confirms the indication of semi-persistent transmission resource allocation
- the user terminal transmits the indicated MAC PDU through the indicated semi-persistent transmission resources without a separate control signal exchange.
- the terminal performs cyclic redundancy checking (CRC) to confirm the allocation of the semi-persistent transmission resources.
- CRC cyclic redundancy checking
- the user terminal may make a wrong determination that there is no semi-persistent resource allocation, that there is no semi-persistent transmission resource allocation.
- data is continuously transmitted through wrong semi-permanent transmission resource. Since the problem of wasting transmission resources is serious, there is a demand for a method of reducing the transmission resource.
- an object of the present invention in view of the above-described demands is to compensate for errors in CRC results, and to provide a resource allocation method of a wireless communication system for verifying validity of an allocation message of semi-persistent transmission resources and a wireless communication system for the same. Is in.
- a resource allocation method of a user terminal for achieving the above object is a process of receiving a semi-persistent transmission resource allocation message to perform a CRC (Cyclic Redundancy Checking) operation, and if the CRC operation result is successful, Comparing the transmission resource information indicated by the received semi-persistent transmission resource allocation message with previously received radio transmission resource information to verify the validity of the received semi-persistent transmission resource allocation message;
- the method includes continuously using the transmission resource indicated in the semi-persistent transmission resource allocation message.
- the verification may include comparing whether the MAC PDU size indicated by the received semi-persistent transmission resource allocation message belongs to the valid MAC PDU of the received radio transmission resource information.
- the size of the indicating MAC PDU is a value calculated from the number of resource blocks, a modulation scheme, a channel coding rate, and the number of bits per resource block obtained from the received semi-persistent transmission resource allocation message.
- the verification may include comparing whether the number of resource blocks indicated by the received semi-persistent transmission resource allocation message is equal to or smaller than the maximum number of resource blocks of the previously received wireless transmission resource information.
- the method may further include discarding the received semi-persistent transmission resource allocation message.
- the resource allocation method of the user terminal the process of receiving a semi-persistent transmission resource allocation message to perform a cyclic redundancy check (CRC) operation, and if the result of the CRC operation, the received semi-persistent transmission resources Whether to transmit the HARQ message for the first packet transmitted through the transmission resource based on the allocation message and to receive one of a HARQ ACK corresponding to the HARQ message and a transmission resource allocation message for retransmission corresponding to the HARQ message. And verifying whether the received semi-persistent transmission resource allocation message is valid.
- CRC cyclic redundancy check
- the transmission resource indicated in the received semi-persistent transmission resource allocation message is continuously used.
- the process further includes.
- a user terminal for receiving a semi-persistent transmission resource allocation message and allocating a transmission resource may receive the semi-persistent transmission resource allocation message and there is no CRC operation error.
- the validity of the received semi-persistent transmission resource allocation message is verified by comparing the transmission resource information indicated by the received semi-persistent transmission resource allocation message with the previously received radio transmission resource information. If there is no error, the received semi-persistent transmission is performed. It includes a receiver for continuously using the transmission resource indicated by the resource allocation message.
- the receiving unit verifies whether the received semi-persistent transmission resource allocation message is valid by comparing whether the MAC PDU size indicated by the received semi-persistent transmission resource allocation message belongs to a valid MAC PDU of the radio transmission resource information. It is done.
- the receiver may calculate the size of the MAC PDU from at least one of the number of resource blocks, a modulation scheme, a channel coding rate, and the number of bits per resource block obtained from the semi-persistent transmission resource allocation message.
- the receiver may verify the CRC calculation result according to whether the number of resource blocks indicated by the received semi-persistent transmission resource allocation message is equal to or less than the maximum number of resource blocks of wireless transmission resource information.
- the receiving unit discards the received semi-persistent transmission resource allocation message if there is an error in the verification result.
- the user terminal may further include a radio resource controller configured to receive the radio transmission resource information including at least one of an effective MAC PDU size and a maximum number of resource blocks from the base station. .
- a user terminal receiving a semi-persistent transmission resource allocation message according to another aspect of the present invention and allocates transmission resources, if there is no CRC calculation result error by receiving the semi-persistent transmission resource allocation message, the received semi-persistent transmission resource allocation message Verify the validity of the HARQ message, and transmit the HARQ message for the first packet transmitted through the transmission resource based on the received semi-persistent transmission resource allocation message, and transmit the HARQ ACK corresponding to the HARQ message and the HARQ message.
- a receiver configured to perform depending on whether one of the transmission resource allocation messages for retransmission is received.
- the reception unit upon receiving any one of a HARQ ACK corresponding to the HARQ message and a retransmission transmission resource allocation message corresponding to the HARQ message, determines that the transmission resource indicated in the received semi-persistent transmission resource allocation message is received. It is characterized by continuous use.
- the reception unit discards the received semi-persistent transmission resource allocation message. It is characterized by.
- the performance of the wireless communication system can be improved.
- FIG. 1 is a view showing a schematic structure of a wireless communication system according to an embodiment of the present invention.
- FIG. 2 is a diagram illustrating a hierarchical structure of a wireless protocol of a wireless communication system according to an embodiment of the present invention.
- FIG 3 is a view for schematically explaining the internal configuration of a user terminal according to an embodiment of the present invention.
- FIG. 4 is a flowchart illustrating a resource allocation method of a wireless communication system according to a first embodiment of the present invention.
- FIG. 5 illustrates a semi-persistent resource allocation message according to an embodiment of the present invention.
- FIG. 6 is a diagram illustrating a frequency of packet generation according to a codec type and a codec rate according to an exemplary embodiment of the present invention.
- FIG. 7 is a flowchart illustrating a resource allocation method of the mobile terminal 100 according to the first embodiment of the present invention.
- FIG. 8 is a view for explaining a transmission resource allocation method according to a second embodiment of the present invention.
- FIG. 9 is a flowchart illustrating a transmission resource allocation method according to a second embodiment of the present invention.
- FIG. 1 is a view showing a schematic structure of a wireless communication system according to an embodiment of the present invention.
- an evolved radio access network 110 and 112 may include an evolved node B (ENB) 120 and 122. , 124, 126, and 128 and an Evolved Gateway GPRS Serving Node (EGGSN) 130 and 132.
- E-RAN evolved radio access network
- E-RAN evolved node B
- Evolved Gateway GPRS Serving Node Evolved Gateway GPRS Serving Node
- GPRS is an abbreviation of General Packet Radio Service.
- the UE (User Equipment) 101 connects to the Internet Protocol (IP) network 114 by the E-RANs 110 and 112.
- IP Internet Protocol
- the ENBs 120, 122, 124, 126, and 128 are nodes corresponding to the existing Node Bs and are connected to the user terminal 100 through a wireless channel. Unlike the existing Node B, ENB (120, 122, 124, 126, 128) plays a more complex role. Next-generation wireless communication systems provide all user traffic over a shared channel, including real-time services such as Voice over IP (VoIP). For this reason, there is a need for an apparatus for scheduling by gathering situation information of UEs 101, and ENBs 120, 122, 124, 126, and 128 are responsible for the scheduling.
- VoIP Voice over IP
- One ENB (one of 120, 122, 124, 126, 128) controls a number of cells.
- a wireless communication system uses Orthogonal Frequency Division Multiplexing (OFDM) as a wireless access technology in a 20 MHz bandwidth.
- OFDM Orthogonal Frequency Division Multiplexing
- AMC adaptive modulation & coding
- the E-RAN 110, 112 including the ENBs 120, 122, 124, 126, and 128 and the EGGSNs 130, 132, the base station 200, the UE 101, and the user terminal 100. It will be referred to as.
- FIG. 2 is a diagram illustrating a hierarchical structure of a wireless protocol of a wireless communication system according to an exemplary embodiment of the present invention.
- a wireless protocol includes PDCP (Packet Data Convergence Protocol) layers 205 and 240, radio link control (RLC) layers 210 and 235. And a medium access control layer (215, 230), and further include a physical (PHY) layer (220, 225).
- PDCP Packet Data Convergence Protocol
- RLC radio link control
- PHY physical
- the Packet Data Convergence Protocol (PDCP) layers 205 and 240 are responsible for operations such as IP header compression / restore.
- the RLC layers 210 and 235 reconstruct a PDCP PDU (Packet Data Unit, hereinafter, referred to as a PDU of the protocol) to an appropriate size to perform an Automatic Repeat Request (ARQ) operation.
- PDCP PDU Packet Data Unit, hereinafter, referred to as a PDU of the protocol
- the MAC layers 215 and 230 are connected to several RLC layer devices configured in one terminal.
- the MAC layers 215 and 230 multiplex the multiple RLC PDUs output from the RLC layer devices into MAC PDUs, and demultiplex the RLC PDUs from the MAC PDUs.
- the physical layers 220 and 225 channel-code and modulate upper layer data, make an OFDM symbol, and transmit it to a wireless channel, or demodulate, channel decode, and transmit an OFDM symbol received through a wireless channel to a higher layer.
- a wireless communication system provides all services on a packet basis.
- a voice call may be serviced by packet switching instead of circuit switching.
- VoIP traffic has a characteristic that small packets are continuously generated at regular intervals. For example, in a VoIP service operating in 12.2 kbps AMR codec mode, a packet having a size of about 35 bytes is generated every 20 msec.
- information for requesting scheduling and uplink resource allocation information should be transmitted whenever a packet occurs. For this reason, the base station 200 allocates semi-permanent transmission resources to the user terminal 100.
- the message transmitted by the base station to the user terminal for the semi-persistent transmission resource allocation described above is called a "semi-persistent transmission resource allocation message".
- the user terminal 100 performs a cyclic redundancy checking (CRC) operation to determine whether the received message is a semi-persistent transmission resource allocation message.
- CRC cyclic redundancy checking
- the transmission resource allocation message for the other user terminal may be recognized as a semi-persistent resource allocation message that has been transmitted to the user due to an error of the CRC operation result.
- Such a message is referred to as an "unknown error semi-persistent transmission resource allocation message" (hereinafter abbreviated as "unknown error message”).
- the present invention is to filter the unknown error message by verifying the CRC operation result.
- FIG. 3 is a diagram schematically illustrating an internal configuration of a user terminal according to an exemplary embodiment of the present invention.
- the user terminal 100 includes a radio 110, a receiver 300, an upper layer device 150, and a radio resource controller 160.
- the receiver 300 includes a PDCCH processor 120, a transmission resource controller 130, a MAC PDU generator 140, a radio resource controller 150, and a higher layer device 160.
- the wireless unit 110 is a device for transmitting and receiving data through a wireless channel.
- the wireless unit 110 transmits and receives a message through a physical downlink control channel (PDCCH).
- PDCCH physical downlink control channel
- the wireless unit 110 decodes the message received through the PDCCH and delivers it to the PDCCH processing unit 120.
- the PDCCH processing unit 120 masks C-RNTI (Cell Radio Network Temporary Identity) on the decoded message received from the radio unit 110 and performs a CRC operation.
- C-RNTI Cell Radio Network Temporary Identity
- C-RNTI is a kind of identifier for identifying whether the message is a semi-permanent resource allocation message. That is, the PDCCH processing unit 120 performs a CRC operation to determine whether the corresponding message is a message transmitted to itself.
- the PDCCH processing unit 120 transmits a transmission resource allocation message and a semi-permanent transmission resource allocation message which are determined to have no error as a result of the CRC operation to the transmission resource controller 130.
- the transmission resource controller 130 controls the radio 110 and the MAC PDU generation unit 140 to transmit the MAC PDU of the indicated size through the transmission resource allocated through the transmission resource allocation message transmitted by the PDCCH processing unit 120. do.
- the transmission resource controller 130 performs a role of filtering out an unknown error message received as a result of an incorrect CRC operation in order to compensate for the CRC operation result.
- the transmission resource controller 130 receives the effective MAC PDU size information and the maximum number of resource blocks from the radio resource controller 160. Then, the transmission resource controller 130 determines whether the semi-persistent transmission resource allocation message transmitted by the PDCCH processing unit 120 is an unknown or error message using the received effective MAC PDU size and the maximum number of resource blocks. As a result of this determination, if it is not an unrecognized error semi-permanent transmission resource allocation message, the transmission resource control unit 130 transmits the MAC PDU generation unit 140 and the radio unit 110 so that the MAC PDU of the indicated size is transmitted through the semi-permanent transmission resource. To control. In addition, as a result of the determination, in the case of an unrecognized error message, the transmission resource controller 130 discards the message and ignores the content.
- the transmission resource controller 130 receives the semi-persistent transmission resource allocation message and performs HARQ retransmission through the transmission resources based on the received semi-persistent transmission resource allocation message. At this time, when a HARQ response corresponding to the corresponding HARQ retransmission is received or a transmission resource allocation message for retransmission is received, data is transmitted and received through the transmission resource indicated by the received semi-persistent transmission resource allocation message.
- the MAC PDU generation unit 140 configures the data stored in the upper layer device 150 as a MAC PDU and transmits the data to the radio unit 110. In this case, the size of one MAC PDU is controlled by the transmission resource controller 130.
- the upper layer device 150 includes a Radio Link Control (RLC) device or a Physical Downlink Control Protocol (PDCP) device.
- RLC Radio Link Control
- PDCP Physical Downlink Control Protocol
- the PDCP device performs a function of compressing or restoring an IP header and the like, and the RLC device reconfigures the PDCP PDU to an appropriate size and performs an ARQ operation for transmitting reliable data.
- the radio resource controller 160 receives the effective MAC PDU size information and the maximum number of resource blocks indicated by the base station in a call setup process and transmits the same to the transmission resource controller 130.
- the user terminal includes a storage device for storing the received data.
- a storage device may store data such as a table for storing the size of the MAC PDU according to the codec rate, the effective MAC PDU size, the maximum number of resource blocks, and the like as shown in Table 1 below.
- the PDCCH processing unit 120 includes a decoding device for decoding data or a message according to a specific protocol. For example, an apparatus for decoding data according to a Radio Resource Control (RRC) protocol is provided. Such a decoding apparatus is connected to the wireless unit 110 to decode data or messages according to a corresponding protocol among data or messages received by the wireless unit.
- RRC Radio Resource Control
- a method of allocating radio resources and transmitting / receiving data through the allocated resources will be described in the wireless communication system according to the embodiment of the present invention as described above.
- FIG. 4 is a flowchart illustrating a resource allocation method of a wireless communication system according to a first embodiment of the present invention
- FIG. 5 is a diagram illustrating a semi-persistent transmission resource allocation message according to an embodiment of the present invention.
- step S401 the base station 200 transmits information about the range or size of the number and amount of semi-persistent transmission resources to be allocated to the specific user terminal 100 by the base station 200 to the user terminal 100.
- This information will be referred to as "wireless transmission resource information”.
- wireless transmission resource information includes the effective MAC PDU size and the maximum number of resource blocks. The effective MAC PDU size and the maximum number of resource blocks are transmitted during the call setup process between the base station 200 and the user terminal 100.
- the user terminal 100 may receive a semi-persistent transmission resource allocation message and calculate transmission resource information from the received semi-persistent transmission resource allocation message.
- Transmission resource information that can be calculated from the semi-persistent transmission resource allocation message includes the MAC PDU size and the number of resource blocks. Accordingly, the user terminal 100 compares the MAC PDU size and the number of resource blocks indicated by the semi-persistent transmission resource allocation message with the effective MAC PDU size and the maximum resource block number of the received radio transmission resource information. You can validate the message.
- the mobile terminal 100 receives and stores the effective MAC PDU size and the maximum number of resource blocks in step S403.
- the base station 200 transmits the effective MAC PDU size and the maximum number of resource blocks to the user terminal 100 through a radio resource control (RRC) message, and the user terminal 100 transmits the radio resource controller 160. Recognize this through
- the effective MAC PDU size refers to a set of MAC PDU sizes or a range of MAC PDU sizes that the base station 200 can indicate to the user terminal 100 through a semi-persistent transmission resource allocation message.
- the effective MAC PDU size can be a set of individual sizes, such as [size 1, size 2, .., size n], and a range of minimum and maximum sizes, such as [min size, max size]. have.
- the user terminal 100 verifies the CRC result according to this effective MAC PDU size.
- a MAC PDU size other than the effective MAC PDU size is indicated through the semi-persistent transmission resource allocation message, it is regarded as an unrecognized error message and the corresponding semi-persistent transmission resource allocation message is ignored.
- the maximum number of resource blocks refers to the maximum number of resource blocks that the base station 200 can allocate to the user terminal 100 through a semi-persistent transmission resource allocation message.
- the user terminal 100 may verify the CRC result through the maximum number of resource blocks. For example, if more resource blocks than the value indicated by the maximum number of resource blocks are allocated, they are regarded as an unknown error message and the corresponding semi-persistent transmission resource allocation message is ignored.
- the base station 200 transmits a semi-persistent transmission resource allocation message to the user terminal 100 in step S405.
- the semi-persistent transmission resource allocation message is transmitted through a physical downlink control channel (PDCCH) which is a control channel.
- PDCCH physical downlink control channel
- This semi-persistent transmission resource allocation message is protected with a 16-bit CRC, and the PDCCH occupies up to three OFDM symbols per 1 msec over the entire system bandwidth.
- the base station 200 transmits a semi-persistent transmission resource allocation message based on the effective MAC PDU size and the maximum number of resource blocks transmitted in the previous step (S401). That is, the semi-persistent transmission resource allocation message is transmitted through the semi-persistent transmission resource allocation message so that the size of the resource to be allocated is within the range of the effective MAC PDU size and the maximum number of resource blocks.
- control messages may be transmitted in various formats through the PDCCH, and the user terminal 100 attempts to decode all possible types and all formats.
- the structure of such a semi-persistent transmission resource allocation message is shown in FIG.
- the semi-persistent transmission resource allocation message includes a transmission resource allocation (RB assignment) 505, a modulation / channel coding (MCS), a transmission power control (TPC), a transmission power control (TPC) 515, and a CRC ( Cyclic Redundancy Checking) field.
- RB assignment a transmission resource allocation
- MCS modulation / channel coding
- TPC transmission power control
- TPC transmission power control
- TPC transmission power control
- CRC Cyclic Redundancy Checking
- the transmission resource allocation field 505 is information indicating the amount and location of transmission resources to be used by the user terminal 100.
- the unit transmission resource is a resource block (RB) having a length of 1 msec and a predetermined bandwidth, and at least one resource block is allocated through the transmission resource allocation field 505.
- the modulation / channel coding field 510 is a field indicating a modulation scheme and a channel coding rate to be applied to data to be transmitted.
- the modulation / channel coding field 510 is five bits of information. The code points constituting these five bits consist of a combination of modulation scheme and channel coding rate.
- the modulation / channel coding field 510 may indicate 32 code points from a code point indicating a combination of QPSK modulation and 0.11 channel coding rate to a code point indicating a combination of 64 QAM modulation and 0.95 channel coding rate.
- the transmission power control field (TPC, Tx Power Control) 515 is a field for controlling a transmission output to be applied to the data to be transmitted. In addition to the fields, there are a plurality of fields for storing various control information, but a detailed description thereof will be omitted.
- the CRC field 525 stores information stored in the semi-persistent transmission resource allocation message and a CRC calculation result for the C-RNTI for semi-persistent transmission resource allocation.
- the user terminal 100 Upon receiving the semi-persistent transmission resource allocation message as described above, the user terminal 100 determines whether the message is a semi-persistent transmission resource allocation message in step S407. As described above, the base station 200 may transmit a general transmission resource allocation message and a semi-persistent transmission resource allocation message through the PDCCH, and in order to distinguish these messages, the base station 200 and the user terminal 100 may transmit a general transmission resource. Different identifiers (C-RNTI) are used for allocation messages and semi-persistent transmission resource allocation resource messages. The base station 200 masks the C-RNTI for the semi-persistent transmission resource allocation message in the semi-persistent transmission resource allocation message.
- C-RNTI Different identifiers
- the base station 200 performs a CRC operation and includes the result in a semi-persistent transmission resource allocation message to transmit. Then, the user terminal 100 masks the C-RNTI for the semi-persistent transmission resource allocation message to the received message to determine that it is a semi-persistent transmission resource allocation message. Then, the user terminal 100 performs a CRC operation. If the base station 200 matches the calculated CRC result, the user terminal 100 determines that the message is a semi-persistent transmission resource allocation message.
- the CRC operation attempted by the user terminal 100 per 1 msec to determine whether the semi-persistent transmission resource is allocated may vary depending on the number of OFDM symbols used for PDCCH transmission, but is usually about 20 times.
- a false positive may occur in one of the 65536 operations.
- a message in which the CRC operation is successful may be an unrecognized error message. That is, an error in determining the semi-persistent transmission resource allocation message may occur.
- the user terminal 100 performs a verification process to determine whether the message determined as the semi-persistent transmission resource allocation message in step S409 is an unrecognized or error message.
- the user terminal 100 determines the semi-persistent transmission resources allocated through the semi-persistent transmission resource allocation message received in step S411.
- the user terminal 100 transmits the MAC PDU of the size indicated in step S411 to the base station. At this time, the user terminal 100 transmits the MAC PDU to the base station 200 without a separate control signal exchange, the process of determining whether the semi-persistent transmission resource allocation message should be accurate.
- the base station 200 and the user terminal 100 reduce the size of the MAC PDU that can be transmitted through the semi-persistent transmission resources, thereby reducing the occurrence of an unrecognized error semi-persistent transmission resource allocation message, even if the damage occurs. Minimize.
- FIG. 6 is a diagram illustrating a frequency of packet generation according to a codec type and a codec rate according to an embodiment of the present invention.
- the user terminal 100 determines the size of the MAC PDU containing the VoIP packet. I can guess.
- VoIP Voice over IP
- the wireless communication system limits the size of the MAC PDU to be transmitted through the semi-persistent transmission resource in the call setup, for example, the VoIP bearer.
- Table 1 shows sizes of MAC PDUs according to codec rates according to an embodiment of the present invention.
- Table 1 Codec rate Typical MAC PDU size 4.75 kbps 16 byte, 17 byte, 20 byte 5.15 kbps 17 byte, 18 byte, 21 byte 5.90 kbps 19 byte, 20 byte, 23 byte 6.70 kbps 21 byte, 22 byte, 25 byte 7.40 kbps 23 byte, 24 byte, 27 byte 7.95 kbps 24 byte, 25 byte, 28 byte 10.2 kbps 30 byte, 31 byte, 34 byte 12.2 kbps 35 byte, 36 byte, 39 byte
- the size of the MAC PDU frequently generated for each codec rate is as disclosed. Therefore, in setting up a bearer for VoIP in which the NB-AMR codec is used, the size of the MAC PDU that can be transmitted through the semi-persistent transmission resource is limited to the size illustrated in Table 1.
- the base station 200 determines the effective MAC PDU size based on the MAC PDU size generated for each codec type and codec rate as illustrated in Table 1 and instructs the user terminal 100. Then, if the size of the MAC PDU indicated by the semi-persistent transmission resource allocation message is a value that does not belong to the effective MAC PDU size, the user terminal 100 discards the message. In other words, the CRC result is verified. In addition, since the number of RBs can be limited, the CRC result can be verified by the same method as the MAC PDU size. Therefore, according to an embodiment of the present invention, the possibility of generating an unrecognized error message can be reduced through the above-described verification process.
- the base station 200 transmits the effective MAC PDU size and the maximum number of resource blocks to the user terminal 100 to limit the size of the MAC PDU and the size of the resource block.
- the user terminal 100 compares the effective MAC PDU size and the maximum number of resource blocks with the derived MAC PDU size and the number of resource blocks.
- the user terminal 100 may refer to the semi-persistent transmission resource allocation message for the size of the MAC PDU to be transmitted through the semi-persistent transmission resources, and may be calculated through Equation 1 below.
- MAC PDU Size n * z * y * Number of bits per resource block.
- n is the number of resource blocks
- z is a modulation scheme
- y is a channel coding rate.
- MCS Modulation and Coding
- the number of allocated resource blocks and the size of the MAC PDU corresponding to the modulation / channel coding information may be calculated by a predetermined formula as described above, but the user terminal 100 and the base station The 200 may store and use a predetermined value.
- the combination of the number of allocated transmission resources and the modulation / channel coding information is thousands, but since the corresponding combinations indicate the same MAC PDU size, the number of MAC PDUs that can be indicated is about 180.
- the size of MAC PDUs that occur frequently in the NB-AMR illustrated in Table 1 ranges from 16 bytes to 39 bytes, and since the size of the total MAC PDUs is about 10, it is semi-permanent.
- the size of the MAC PDU indicated by the transmission resource allocation message is limited to between 16 bytes and 39 bytes, an effect of reducing the probability of the unrecognized error semi-permanent transmission resource allocation message to 1/18 occurs.
- the number of resource blocks may also be derived through a semi-persistent transmission resource message. That is, the number of resource blocks can be obtained by referring to the RB assignment field 505.
- FIG. 7 is a flowchart illustrating a resource allocation method of a mobile terminal according to the first embodiment of the present invention.
- the user terminal 100 recognizes information on the amount of semi-persistent transmission resources through a call setup process in step S701.
- the information on the amount of semi-persistent transmission resources includes the effective MAC PDU size and the maximum number of resource blocks.
- the effective MAC PDU size and the maximum number of resource blocks are transmitted during the call setup process between the base station 200 and the user terminal 100. That is, the user terminal 100 receives and stores the effective MAC PDU size and the maximum number of resource blocks in the call setup process.
- the effective MAC PDU size refers to a set of MAC PDU sizes or a range of MAC PDU sizes that the base station 200 can indicate to the user terminal 100 through a semi-persistent transmission resource allocation message.
- the MAC PDU size can be a set of individual sizes, such as [size 1, size 2, .., size n], and a range of minimum and maximum sizes, such as [min size, max size]. .
- the user terminal 100 verifies the CRC result according to this effective MAC PDU size. For example, if a MAC PDU size other than the effective MAC PDU size is indicated through the semi-persistent transmission resource allocation message, it is regarded as an unrecognized error message and the corresponding semi-persistent transmission resource allocation message is ignored.
- the maximum number of resource blocks refers to the maximum number of resource blocks that the base station 200 can allocate to the user terminal 100 through a semi-persistent transmission resource allocation message. If more resource blocks are allocated than the value indicated by the maximum number of resource blocks through the semi-persistent transmission resource allocation message, it is regarded as an unknown error message and the corresponding semi-persistent transmission resource allocation message is ignored.
- the effective MAC PDU size and the maximum number of resource blocks are transmitted to the user terminal 100 through a Radio Resource Control (RRC) message when the base station 200 establishes a call, and the user terminal 100 transmits the radio resource controller 160. Recognize this through
- RRC Radio Resource Control
- the user terminal 100 When the user terminal 100 that has completed the above-described call setup process or the like receives a message through the PDCCH in step S703, the user terminal 100 decodes the message received in step S705 in a predetermined manner.
- the user terminal 100 masks the C-RNTI for the semi-persistent transmission resource allocation message to the message decoded in step S707, and CRC computes the message masked by the C-RNTI in step S709. Then, the user terminal 100 determines whether there is an error in the CRC operation result in step S711. If it is determined that there is an error as a result of the determination, the user terminal 100 proceeds to step S721 and discards the message and judges that the decoded message is not a message transmitted to the user. On the other hand, if the user terminal 100 determines that there is no error as a result of the CRC operation in step S711, the user terminal 100 proceeds to step S713.
- step S713 the user terminal 100 compares the number of resource blocks allocated through a message without a CRC operation result error with the maximum number of resource blocks previously recognized (step S701) to verify the CRC operation result. On the other hand, if the number of resource blocks exceeds the maximum number of resource blocks previously received, since the unrecognized error message, the user terminal 100 proceeds to step S721 and discards the message and ignores the contents.
- the user terminal 100 proceeds to step S715 to derive the MAC PDU size.
- the derivation of the size of the MAC PDU may calculate the size of the indicated MAC PDU using transmission resource allocation information and modulation / channel coding information of the received semi-persistent transmission resource allocation message.
- the user terminal 100 determines whether the size of the MAC PDU derived through the message in step S717 belongs to the size of the effective MAC PDU. As a result of this determination, if it does not belong to the effective MAC PDU size, it is determined that the unrecognized error semi-persistent transmission resource allocation message has been received, the user terminal 100 proceeds to step S721 and discards the message and ignores the contents.
- the user terminal 100 determines the semi-persistent transmission resources allocated through the semi-persistent transmission resource allocation message received in step S719, and then transmits reverse data through the semi-permanent transmission resources that arrive periodically.
- the process of verifying the CRC result is performed using two parameters including the effective MAC PDU size and the maximum number of resource blocks.
- the above-described verification method may be performed independently. That is, the verification may be performed using only the effective MAC PDU size or the CRC result may be verified using only the maximum number of resource blocks. That is, the verification method of any one of the method using the resource block (step S713) and the method using the MAC PDU size (steps S715 and S717) may be omitted.
- the valid MAC PDU size may be verified first, and the verification using the maximum number of resource blocks may be performed later. That is, steps S715 and S717 may be performed first, and then steps S713 may be performed.
- General semi-persistent transmission resources include transmission resources for retransmission. Therefore, the transmission resources for retransmission are not allocated very much.
- the user terminal 100 receives a separate transmission resource for retransmission of the first packet previously transmitted as the semi-persistent transmission resource based on the semi-persistent transmission resource allocation message. Therefore, when the semi-persistent transmission resource allocation message received from the base station 200 is not a message sent to the user, the user terminal 100 does not receive the transmission resource for retransmission. For this reason, when the transmission resource for retransmission cannot be allocated separately, the user terminal 100 determines the received semi-persistent transmission resource allocation message as an unrecognized error message.
- Retransmission of the above-described packet may be performed by an automatic retransmission request (ARQ) or a hybrid-ARQ (HARQ).
- ARQ automatic retransmission request
- HARQ hybrid-ARQ
- HARQ will be described as an example.
- An assignment message can be sent.
- the UE 100 when the UE 100 receives the semi-persistent transmission resource allocation message and needs to retransmit the first packet after transmitting the first packet using the semi-persistent transmission resource, the first packet transmitted by the base station separately Receiving a transmission resource allocation message for retransmission, it is determined that the semi-persistent transmission resource is not an unrecognized error message, and continues using the allocated semi-persistent transmission resource.
- this retransmission scheme involves a response according to the retransmission. That is, if HARQ retransmission is valid, the base station 100 will transmit a positive response to the user terminal. Accordingly, when the user terminal receives an acknowledgment (ACK), the user terminal determines that the semi-persistent transmission resource allocation message is valid.
- ACK acknowledgment
- 8 is a view for explaining a transmission resource allocation method according to a second embodiment of the present invention.
- 8 illustrates a frame used as a transmission resource.
- 8 illustrates a frame divided into a plurality of subframes, and each subframe is divided into a plurality of resource blocks (RBs).
- RBs resource blocks
- RTT Round Trip Time
- the user terminal 100 receives a semi-persistent transmission resource allocation message at an arbitrary time and allocates transmission resources according to the received semi-persistent transmission resource allocation message. Then, the first HARQ retransmission of the first packet is performed using the allocated transmission resource. Then, it is determined whether the transmission resource allocation message for retransmission is received in the subframe in which the transmission resource allocation message for HARQ retransmission can be received.
- the transmission resource for HARQ retransmission is allocated through a general transmission resource allocation message, and whether a transmission resource for retransmission is indicated through a specific field value of the transmission resource allocation message.
- the subframes in which the transmission resource allocation message for retransmission may be received are subframes 915 to 930 spaced apart by an integer multiple of HARQ RTT (Round Trip Time) at the time 905 when the initial transmission resource allocation message is received. to be.
- HARQ RTT Random Trip Time
- the user terminal 100 first receives an acknowledgment (HARQ ACK) of the first packet transmitted through the semi-persistent transmission resources, or second, allocates transmission resources for retransmission to the first packet transmitted through the semi-persistent transmission resources If no message is received, it is determined that the semi-persistent transmission resource is not verified.
- HARQ ACK acknowledgment
- the semi-persistent transmission resource is determined from this time point, and the allocated semi-persistent transmission resource is started.
- the base station does not transmit a HARQ ACK or a transmission resource allocation message for retransmission to the terminal. Therefore, since the user terminal 100 does not use the semi-persistent transmission resources except for the first HARQ transmission of the first packet, transmission resource waste due to an unrecognized error message is minimized.
- step S1001 is a flowchart illustrating a transmission resource allocation method according to a second embodiment of the present invention.
- the user terminal 100 receives a message through the PDCCH in step S1001
- the user terminal 100 decodes the message received in step S1003.
- the user terminal 100 masks the C-RNTI for the semi-persistent transmission resource allocation message to the message decoded in step S1005, and CRC computes the message masked by the C-RNTI in step S1007.
- the user terminal 100 determines whether there is an error in the CRC operation result in step S1009.
- step S1040 determines that the decoded message is not a message sent to the user and discards the message and ignores the content.
- step S1010 determines that there is no error as a result of the CRC operation in step S1009
- the user terminal 100 proceeds to step S1010.
- the user terminal 100 executes the first HARQ transmission of the first packet through the allocated transmission resource after a predetermined x transmission time interval (TTI) in step S1010.
- TTI transmission time interval
- the user terminal 100 checks the feedback for the HARQ transmission in step S1015 and if there is a response (HARQ ACK) proceeds to step S1020, if not the response (HARQ ACK) proceeds to step S1025.
- Receiving HARQ ACK for the data transmitted by the allocated transmission resource means that the base station has successfully received the reverse data, and furthermore, since the transmission resource used for data transmission is a valid transmission resource, the user terminal in step S1020. 100 determines the semi-persistent transmission resources allocated through the received semi-persistent transmission resource allocation message, and then transmits reverse data through the semi-persistent transmission resources that arrive periodically.
- the user terminal 100 proceeds to step S1025 waits until the next 'retransmission transmission resource allocation message reception subframe'.
- the subframes capable of receiving a retransmission resource allocation message are subframes 915, 920, 925, and 930 spaced apart by an integer multiple of HARQ RTT at the time when the semi-persistent transmission resource allocation message is received. In FIG. 8, 8 subframes are spaced apart.
- the user terminal 100 checks whether a retransmission transmission resource allocation message transmitted to the user terminal 100 is received in the subframes 915, 920, 925, and 930 in step S1030. As a result of the check, the user terminal 100 proceeds to step S1020 to determine the semi-persistent transmission resources. For example, referring to FIG. 9, when a retransmission transmission resource allocation message is received in any one of the subframes 915, 920, 925, and 930 capable of receiving a transmission resource allocation message for retransmission, the received semi-persistent transmission resource allocation message is indicated. The semi-permanent transmission resource is determined. For example, in the case of FIG. 8, a transmission resource allocation message 935 for retransmission is received in subframe 920.
- the user terminal 100 proceeds to step S1035 without using the allocated semi-persistent transmission resources.
- the user terminal 100 checks whether a predetermined number of 'retransmission transmission resource allocation message reception subframes' have elapsed since the transmission resource allocation message for retransmission has not been received. If the retransmission resource allocation message receiving subframe for the predetermined number of times has passed, the user terminal 100 proceeds to step S1040, otherwise returns to step S1025. The user terminal 100 determines that the semi-persistent transmission resource allocation message is an unrecognized error message in step S1040 and discards the received semi-persistent transmission resource allocation message and ignores the contents.
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Abstract
Description
Codec rate | Typical MAC PDU size |
4.75 kbps | 16 byte, 17 byte, 20 byte |
5.15 kbps | 17 byte, 18 byte, 21 byte |
5.90 kbps | 19 byte, 20 byte, 23 byte |
6.70 kbps | 21 byte, 22 byte, 25 byte |
7.40 kbps | 23 byte, 24 byte, 27 byte |
7.95 kbps | 24 byte, 25 byte, 28 byte |
10.2 kbps | 30 byte, 31 byte, 34 byte |
12.2 kbps | 35 byte, 36 byte, 39 byte |
Claims (17)
- 사용자 단말의 자원 할당 방법에 있어서,반영구적 전송 자원 할당 메시지를 수신하여 CRC(Cyclic Redundancy Checking) 연산하는 과정과,상기 CRC 연산 결과 성공인 경우, 상기 수신한 반영구적 전송 자원 할당 메시지가 지시하는 전송 자원 정보와 기 수신한 무선 전송 자원 정보를 비교하여 상기 수신한 반영구적 전송 자원 할당 메시지의 유효성 여부를 검증하는 과정과,상기 검증 결과 오류가 없으면 상기 수신한 반영구적 전송 자원 할당 메시지에 지시된 전송 자원을 지속적으로 사용하는 과정을 포함하는 것을 특징으로 하는 사용자 단말의 자원 할당 방법.
- 제1항에 있어서,상기 검증하는 과정은 상기 수신한 반영구적 전송 자원 할당 메시지가 지시하는 MAC PDU 크기가 상기 기 수신한 무선 전송 자원 정보의 유효 MAC PDU에 속하는지 여부를 비교하는 것을 특징으로 하는 사용자 단말의 자원 할당 방법.
- 제2항에 있어서,상기 지시하는 MAC PDU의 크기는 상기 수신한 반영구적 전송 자원 할당 메시지로부터 얻어지는 리소스 블록의 수, 변조 방식, 채널 코딩 율 및 리소스 블록 당 비트 수로부터 산출되는 값인 것을 특징으로 하는 사용자 단말의 자원 할당 방법.
- 제1항에 있어서,상기 검증하는 과정은 상기 수신한 반영구적 전송 자원 할당 메시지가 지시하는 리소스 블록의 개수가 상기 기 수신한 무선 전송 자원 정보의 리소스 블록 최대 개수 이하인지 여부를 비교하는 것을 특징으로 하는 사용자 단말의 자원 할당 방법.
- 제1항에 있어서,상기 검증하는 과정 후, 상기 검증 결과 오류가 있으면, 상기 수신한 반영구적 전송 자원 할당 메시지를 폐기하는 과정을 더 포함하는 것을 특징으로 하는 사용자 단말의 자원 할당 방법.
- 제1항에 있어서,상기 검증하는 과정은,상기 수신한 반영구적 전송 자원 할당 메시지에 의거한 전송 자원을 통해 전송한 첫 번째 패킷에 대한 HARQ 메시지를 전송하고, 상기 HARQ 메시지에 대응하는 HARQ ACK 및 상기 HARQ 메시지에 대응하는 재전송용 전송 자원 할당 메시지 중 어느 하나를 수신하는지 여부에 따라 이루어지는 것을 특징으로 하는 사용자 단말의 자원 할당 방법.
- 제6항에 있어서,상기 검증 결과, 상기 HARQ 메시지에 대응하는 HARQ ACK 및 상기 HARQ 메시지에 대응하는 재전송용 전송 자원 할당 메시지 중 어느 하나를 수신하면, 상기 수신한 반영구적 전송 자원 할당 메시지에 지시된 전송 자원을 지속적으로 사용하는 과정을 더 포함하는 것을 특징으로 하는 사용자 단말의 자원 할당 방법.
- 제6항에 있어서,상기 검증 결과, 상기 HARQ 메시지에 대응하는 HARQ ACK 및 상기 HARQ 메시지에 대응하는 재전송용 전송 자원 할당 메시지를 기 설정된 시간 동안 수신하지 못하면, 상기 수신한 반영구적 전송 자원 할당 메시지를 폐기하는 과정을 더 포함하는 것을 특징으로 하는 사용자 단말의 자원 할당 방법.
- 반영구적 전송 자원 할당 메시지를 수신하여 전송 자원을 할당하는 사용자 단말에 있어서,상기 반영구적 전송 자원 할당 메시지를 수신하여 CRC 연산 결과 오류가 없으면, 상기 수신한 반영구적 전송 자원 할당 메시지가 지시하는 전송 자원 정보와 기 수신한 무선 전송 자원 정보를 비교하여 상기 수신한 반영구적 전송 자원 할당 메시지의 유효성 여부를 검증하며, 상기 검증 결과 오류가 없으면 상기 수신한 반영구적 전송 자원 할당 메시지가 지시하는 전송 자원을 지속적으로 사용하는 수신부를 포함하는 것을 특징으로 하는 자원 할당을 위한 사용자 단말.
- 제9항에 있어서,상기 수신부는 상기 수신한 반영구적 전송 자원 할당 메시지가 지시하는 MAC PDU 크기가 상기 무선 전송 자원 정보의 유효 MAC PDU에 속하는지 여부를 비교하여 상기 수신한 반영구적 전송 자원 할당 메시지의 유효성 여부를 검증하는 것을 특징으로 하는 자원 할당을 위한 사용자 단말
- 제10항에 있어서,상기 수신부는 상기 반영구적 전송 자원 할당 메시지로부터 얻어지는 리소스 블록의 수, 변조 방식, 채널 코딩 율 및 리소스 블록 당 비트 수 중 적어도 하나로부터 상기 MAC PDU의 크기를 산출하는 것을 특징으로 하는 자원 할당을 위한 사용자 단말.
- 제9항에 있어서,상기 수신부는 상기 수신한 반영구적 전송 자원 할당 메시지가 지시하는 리소스 블록의 개수가 무선 전송 자원 정보의 리소스 블록 최대 개수 이하인지 여부에 따라 상기 CRC 연산 결과를 검증하는 것을 특징으로 하는 자원 할당을 위한 사용자 단말.
- 제9항에 있어서,상기 수신부는, 상기 검증 결과 오류가 있으면, 상기 수신한 반영구적 전송 자원 할당 메시지를 폐기하는 것을 특징으로 하는 자원 할당을 위한 사용자 단말.
- 제9항에 있어서,기지국으로부터 유효 MAC PDU 크기 및 리소스 블록 최대 개수 중 적어도 하나를 포함하는 상기 무선 전송 자원 정보를 수신하는 무선 자원 제어부를 더 포함하는 것을 특징으로 하는 자원 할당을 위한 사용자 단말.
- 제9항에 있어서,상기 수신부는 상기 수신한 반영구적 전송 자원 할당 메시지의 유효성 여부를 검증 시, 상기 수신한 반영구적 전송 자원 할당 메시지에 의거한 전송 자원을 통해 전송한 첫 번째 패킷에 대한 HARQ 메시지를 전송하고, 상기 HARQ 메시지에 대응하는 HARQ ACK 및 상기 HARQ 메시지에 대응하는 재전송용 전송 자원 할당 메시지 중 어느 하나를 수신하는지 여부에 따라 이루어지는 것을 특징으로 하는 자원 할당을 위한 사용자 단말.
- 제15항에 있어서,상기 수신부는, 상기 검증 결과, 상기 HARQ 메시지에 대응하는 HARQ ACK 및 상기 HARQ 메시지에 대응하는 재전송용 전송 자원 할당 메시지 중 어느 하나를 수신하면, 상기 수신한 반영구적 전송 자원 할당 메시지에 지시된 전송 자원을 지속적으로 사용하는 것을 특징으로 하는 사용자 단말의 자원 할당 방법.
- 제15항에 있어서,상기 수신부는 상기 검증 결과, 상기 HARQ 메시지에 대응하는 HARQ ACK 및 상기 HARQ 메시지에 대응하는 재전송용 전송 자원 할당 메시지를 기 설정된 시간 동안 수신하지 못하면, 상기 수신한 반영구적 전송 자원 할당 메시지를 폐기하는 것을 특징으로 하는 사용자 단말의 자원 할당 방법.
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US12/991,002 US8675578B2 (en) | 2008-05-06 | 2009-04-30 | Method for allocating resources in wireless communication system and system thereof |
US14/165,062 US10140173B2 (en) | 2008-05-06 | 2014-01-27 | Method for allocating resources in wireless communication system and system thereof |
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KR20080041683A KR101478240B1 (ko) | 2008-05-06 | 2008-05-06 | 무선 통신 시스템의 자원 할당 방법 및 이를 위한 무선통신 시스템 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2615763A3 (en) * | 2012-01-12 | 2015-12-30 | BlackBerry Limited | Method and system for handling of a transport block size change in an adaptive retransmit order |
CN107005491A (zh) * | 2014-03-28 | 2017-08-01 | 三星电子株式会社 | 用于通信系统中的资源分配的方法和装置 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007221178A (ja) * | 2005-04-01 | 2007-08-30 | Ntt Docomo Inc | 送信装置及び送信方法 |
US9001777B2 (en) * | 2009-03-17 | 2015-04-07 | Qualcomm Incorporated | Scheduling information for wireless communications |
US8341504B2 (en) | 2010-03-11 | 2012-12-25 | Microsoft Corporation | Fast and reliable wireless communication |
US8737344B2 (en) | 2010-09-14 | 2014-05-27 | Lg Electronics Inc. | Method and device for uplink resource allocation |
TW201320692A (zh) | 2011-08-10 | 2013-05-16 | Ind Tech Res Inst | 資料傳送方法及使用此方法的基地台及用戶端設備 |
US20150049678A1 (en) * | 2013-08-15 | 2015-02-19 | General Dynamics Broadband, Inc. | Apparatus and Methods for Semi-Persistent Scheduling |
CN105446823A (zh) * | 2015-11-10 | 2016-03-30 | 杭州古北电子科技有限公司 | 一种用于智能产品生产测试系统及方法 |
KR20180046741A (ko) | 2016-10-28 | 2018-05-09 | 삼성전자주식회사 | 통신 시스템에서 자원 할당 방법 및 장치 |
US10524270B2 (en) * | 2017-03-06 | 2019-12-31 | Hewlett Packard Enterprise Development Lp | Contention-based resource allocation |
CN112534902B (zh) * | 2018-08-01 | 2023-02-17 | 联想(北京)有限公司 | 用于数据传输的方法和装置 |
CN110611558B (zh) * | 2019-10-16 | 2022-04-22 | 深圳前海中电慧安科技有限公司 | 采集移动终端信息的方法、装置、采集设备和存储介质 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060239334A1 (en) * | 2001-09-18 | 2006-10-26 | Jae-Kyun Kwon | Digital communication method and system |
WO2007108602A1 (en) * | 2006-03-17 | 2007-09-27 | Samsung Electronics Co., Ltd. | Method and apparatus for allocation of transmission resources in a mobile communication system |
WO2007107821A2 (en) * | 2006-03-20 | 2007-09-27 | Nokia Corporation | Amended control for resource allocation in a radio access network |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7586914B2 (en) * | 2001-09-27 | 2009-09-08 | Broadcom Corporation | Apparatus and method for hardware creation of a DOCSIS header |
TWI374635B (en) * | 2003-06-02 | 2012-10-11 | Qualcomm Inc | Generating and implementing a signal protocol and interface for higher data rates |
DE102006010820A1 (de) * | 2006-03-07 | 2007-09-13 | Micronas Gmbh | Fehlerkorrektur- und Fehlererfassungs-Verfahren zum Auslesen von gespeicherten Informationsdaten und Speichersteuereinrichtung dafür |
KR100943585B1 (ko) * | 2006-03-17 | 2010-02-23 | 삼성전자주식회사 | 이동통신 시스템에서 전송 자원의 할당 방법 및 장치 |
KR101298580B1 (ko) * | 2006-08-01 | 2013-08-22 | 삼성전자주식회사 | 이동통신 시스템에서 패킷 서비스를 위한 패킷 디코딩정보의 송수신 방법 및 장치 |
PT2137865E (pt) * | 2007-03-19 | 2016-01-28 | Ericsson Telefon Ab L M | (h)arq para agendamento semi-persistente |
US20080232284A1 (en) * | 2007-03-23 | 2008-09-25 | Nokia Corporation | Apparatus, method and computer program product providing semi-dynamic persistent allocation |
EP2094039B1 (en) * | 2008-02-20 | 2016-11-09 | Amazon Technologies, Inc. | Method and apparatus for processing padding buffer status reports |
US8665804B2 (en) * | 2008-03-19 | 2014-03-04 | Qualcomm Incorporated | Filtering semi-persistent scheduling false alarms |
US9036564B2 (en) * | 2008-03-28 | 2015-05-19 | Qualcomm Incorporated | Dynamic assignment of ACK resource in a wireless communication system |
EP2166804A1 (en) * | 2008-09-17 | 2010-03-24 | Panasonic Corporation | Deactivation of semi-persistent resource allocations in a mobile communication network |
KR101649493B1 (ko) * | 2008-09-18 | 2016-08-19 | 삼성전자주식회사 | Crc 길이의 가상 확장 방법 및 장치 |
-
2008
- 2008-05-06 KR KR20080041683A patent/KR101478240B1/ko active IP Right Grant
-
2009
- 2009-04-30 US US12/991,002 patent/US8675578B2/en active Active
- 2009-04-30 WO PCT/KR2009/002321 patent/WO2009136710A1/ko active Application Filing
-
2014
- 2014-01-27 US US14/165,062 patent/US10140173B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060239334A1 (en) * | 2001-09-18 | 2006-10-26 | Jae-Kyun Kwon | Digital communication method and system |
WO2007108602A1 (en) * | 2006-03-17 | 2007-09-27 | Samsung Electronics Co., Ltd. | Method and apparatus for allocation of transmission resources in a mobile communication system |
WO2007107821A2 (en) * | 2006-03-20 | 2007-09-27 | Nokia Corporation | Amended control for resource allocation in a radio access network |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2615763A3 (en) * | 2012-01-12 | 2015-12-30 | BlackBerry Limited | Method and system for handling of a transport block size change in an adaptive retransmit order |
CN107005491A (zh) * | 2014-03-28 | 2017-08-01 | 三星电子株式会社 | 用于通信系统中的资源分配的方法和装置 |
US10404617B2 (en) | 2014-03-28 | 2019-09-03 | Samsung Electronics Co., Ltd. | Method and apparatus for resource allocation in communication system |
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US10140173B2 (en) | 2018-11-27 |
US20120039264A1 (en) | 2012-02-16 |
KR20090116017A (ko) | 2009-11-11 |
KR101478240B1 (ko) | 2015-01-06 |
US8675578B2 (en) | 2014-03-18 |
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