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WO2008111749A1 - Procédé d'affectation de ressources radio - Google Patents

Procédé d'affectation de ressources radio Download PDF

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Publication number
WO2008111749A1
WO2008111749A1 PCT/KR2008/001193 KR2008001193W WO2008111749A1 WO 2008111749 A1 WO2008111749 A1 WO 2008111749A1 KR 2008001193 W KR2008001193 W KR 2008001193W WO 2008111749 A1 WO2008111749 A1 WO 2008111749A1
Authority
WO
WIPO (PCT)
Prior art keywords
radio resource
mobile terminal
downlink
packet
uplink
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2008/001193
Other languages
English (en)
Inventor
Jae-Heung Kim
Tae-Joong Kim
Hyung-Cheol Shin
Kyoung-Seok Lee
Byung-Han Ryu
Seung-Chan Bang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electronics and Telecommunications Research Institute ETRI
KT Corp
Original Assignee
Electronics and Telecommunications Research Institute ETRI
KT Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020070107847A external-priority patent/KR101336882B1/ko
Application filed by Electronics and Telecommunications Research Institute ETRI, KT Corp filed Critical Electronics and Telecommunications Research Institute ETRI
Priority to US12/530,568 priority Critical patent/US20100091728A1/en
Publication of WO2008111749A1 publication Critical patent/WO2008111749A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/121—Wireless traffic scheduling for groups of terminals or users

Definitions

  • the present invention relates to a method for allocating radio resources in a mobile telecommunication system; and, more particularly, to a method for allocating radio resources in a mobile telecommunication system in order to effectively allocate, retrieve, and reallocate radio resources according to presence of transmission packets by determining whether a transmission packet for a terminal exist or not, maintaining a corresponding radio resource if there is a transmission packet for the terminal, or temporally retrieving a corresponding radio resource if there is no transmission packet for the terminal.
  • radio resources are shared by a plurality of terminals in a packet-based cellular system.
  • scheduling information may vary according to a scheduling method.
  • the scheduling method may be differently applied according to a service type such as a real time service or a non real time service.
  • radio resources must be regularly allocated at a predetermined interval for the real time service.
  • WCDMA Wideband Code Division Multiple Access
  • HSDPA High Speed Downlink Packet Access
  • HSUPA high speed uplink packet access
  • a long term evolution (LTE) system for providing various packet services employs a method of dynamically and flexibly allocating radio resources according to a service type in order to improve the usability of radio resources.
  • the LTE system uses a persistent scheduling method or a group scheduling method to reduce signaling overhead caused by transmitting scheduling information that informs radio resource allocation information in case of a real time service. That is, the persistent scheduling method or the group scheduling method is used for optimizing radio resource allocation.
  • the persistent scheduling method allocates a predetermined radio resource per- sistently to a predetermined terminal that receives a real time service for a predetermined duration through a setup process for service configuration. Such a persistent scheduling method can regularly allocate radio resource without additional signaling for scheduling.
  • the persistent scheduling method has a shortcoming in that the usability of radio resources is deteriorated because a corresponding radio resource is occupied by a predetermined terminal regardless of whether or not packet data remains. Therefore, the persistent scheduling method requires a method for allocating radio resources that improves the usability of radio resource by minimizing signaling overhead in scheduling radio resource for a real time packet service.
  • a current LTE system of 3GPP employs Orthogonal Frequency Division Multiple
  • OFDMA Orthogonal Frequency Division Multiple Access
  • radio resources composed of a time and a frequency are divided and transmitted through downlink and uplink physical channels.
  • the radio resource uses a radio resource block which is divided into a transmission time interval TTI and a sub carrier group.
  • a radio frame forming such a radio resource is formed of a sub-frame (or TTI) of 1 millisecond. Therefore, in case of a radio frame of 10 milliseconds, 10 sub frames form one radio frame.
  • a scheduling operation for allocating a radio resource to transmit packet data is performed in a unit of TTI. Therefore, terminals receiving a packet service monitor a L1/L2 control signal resource block where scheduling information is transmitted at every TTI in order to transmit and receive data.
  • the control signaling information includes a function of addressing a radio resource allocated for packet data transmission.
  • the control signaling information is encoded by each terminal or each group.
  • a terminal identifier such as cell-radio network temporary identifier (C-RNTI) is used for identifying a terminal or a terminal group in a base station for scheduling.
  • C-RNTI cell-radio network temporary identifier
  • the terminal identifier is inserted into the control signaling information.
  • terminals can identify control signaling information by masking CRC using an identifier.
  • the LTE system employs a different radio resource allocation method according to a packet service type and a quality of service (QoS). That is, a persistent or semi-static radio allocation method has been considered to be used for a real time service. The persistent or semi-static radio allocation method statically allocates radio resources at a regular time interval. Also, a dynamic allocation method allocating resources in a unit of TTI has been considered to be used for the non-real time service.
  • QoS quality of service
  • the persistent scheduling method does not transmit additional control signaling information for scheduling at a corresponding TTI in order to reduce an amount of transmitting control signaling information.
  • the persistent scheduling method allocates a predetermined radio resource at a regular time interval according to a predetermined scheduling condition in consideration of service activity when a base station and a terminal setup services.
  • FIG. 1 is a diagram illustrating for AMR codec packet generation in a VoIP service which is a real time service according to the related art.
  • a VoIP service period includes an active period 12 and a silent period 13 according to whether VoIP packets from an upper layer exist or not.
  • the active period 12 is a talkspurt period where a VoIP packet data 11 is generated because a user talks during a VoIP service.
  • the VoIP packet data is inputted to a transmission buffer of a base station or a terminal at a regular interval in the active period 12.
  • VoIP packets are not generated in the silent period 13.
  • SID silence descriptor
  • CODEC of or discriminate a transition time from the active period 12 to the silent period 13 or a transition time from the silent period 13 to the active period 12. Also, a scheduler of a base station could not determine whether a generated packet is a SID packet 14 in the silent period 13 or a newly started VoIP packet.
  • the scheduler of the base station Since the scheduler of the base station is not informed of or accurately discriminates a transition time from one period to another period, the scheduler of the base station cannot retrieve radio resources that was allocated to a corresponding terminal at a transmission time from an active period to a silent period 13, cannot allocate the radio resources to other terminals, cannot reallocate the radio resources at a transition time 12 from a silent period to an active period 12, or cannot inform validity of existing allocation information.
  • a scheduler has a difficulty in determining whether the active period 12 is transited to the silent period 13 or vice versa through additional control signaling from a source CODEC. Therefore, the scheduler cannot be aware of transition during a VoIP service. Also, the scheduler cannot determine whether a VOIP packet data generated from a source CODEC and inputted to a transmission buffer is a SID packet 14 or not.
  • the silent period 13 is irregularly generated although it cannot be known in advance.
  • Fig. 2 is a diagram illustrating a control signaling block and radio resource in a TTI forming a radio frame.
  • downlink radio frame 20 from a base station to a terminal for transmitting packet data is divided into a plurality of TTIs 21.
  • Each of the TTIs 21 includes a control signaling block 221 for transmitting scheduling information and a radio resource block 23 for transmitting packet data.
  • the control signaling block 22 includes a downlink (DL) control signaling block 24 denoting scheduling information for a downlink (DL) radio resource and an uplink (UL) control signaling block 24 denoting scheduling information of an uplink radio resource.
  • DL and UL control signaling blocks 24 and 25 is formed of scheduling information units 26 denoting DL and UL scheduling information for a predetermined terminal or a predetermined terminal group.
  • terminals search DL scheduling information units 26 for receiving packet data transmitted from a base station and receives packet data through a designated downlink radio resource. Also, the terminals searches UL scheduling information units 25 and transmits packet data to a base station through a designated uplink radio resource.
  • a persistent scheduling method does not use DL or UL scheduling information units 26 and 25 as shown in Fig. 2.
  • the persistent scheduling method transmits packet data by occupying downlink or uplink radio resources according to a predetermined method.
  • An embodiment of the present invention is directed to providing a method for allocating radio resources in a mobile telecommunication system, which can effectively allocate, retrieve, and reallocate radio resources according to presence of transmission packets by determining whether a base station has a transmission packet for a terminal , maintaining a corresponding radio resource if the transmission packet for the terminal exists or temporally retrieving a corresponding radio resource if the transmission packet for the terminal dose not exist.
  • Another embodiment of the present invention is directed to providing a method for allocating a radio resource in a mobile telecommunication system, which can effectively allocate, retrieve, and reallocate radio resources according to whether a packet is generated or not in case of a real time service that regularly allocates a radio resource by observing a transmission buffer for a mobile terminal having an allocated radio resource, retrieving the allocated radio resource if packet data is not inputted for a predetermined time, and reallocating the retrieved radio resource to another terminal.
  • the present invention it is determined whether a there is a packet for a mobile terminal allocated with a radio resource in a mobile communication system.
  • the radio resource is maintained if the transmission packet for the terminal exists, or the radio resource is temporally retrieved if no transmission packet exists for a terminal.
  • the retrieved radio resource is allocated to another mobile terminal.
  • a method for allocating a downlink radio resource in a base station including: retrieving a downlink radio resource allocated to a first mobile terminal if there is no downlink packet for the first mobile terminal ; continuously determining whether or not there are new downlink packets for the first mobile terminal; and retrieving a radio resource allocated to a second mobile terminal if there are new downlink packets for the first mobile terminal and reallocating the retrieved radio resource to the first mobile terminal.
  • a method for allocating a downlink radio resource in a mobile terminal including: receiving a downlink packet from a base station through a downlink radio resource allocated according to a persistent scheduling algorithm; searching scheduling control information after transmitting a retrieval response for downlink radio resources to be retrieved by the base station to the base station and temporally retrieving a downlink radio resource; and receiving a downlink packet through a downlink radio resource reallocated by the base station according to the searched scheduling control information.
  • a method for allocating an uplink radio resource in a base station including: determining whether it is necessary to retrieve a pre-allocated uplink radio resource according to a state of using an uplink radio resource in a first mobile terminal; retrieving a pre- allocated uplink radio resource temporally if it is necessary to retrieve the radio resource and allocating the retrieved uplink radio resource to a second mobile terminal; and retrieving a radio resource allocated to the second mobile terminal according to a request of the first mobile terminal and reallocating the retrieved radio resource to the first mobile terminal.
  • the method may further include: informing the first mobile terminal that a pre- allocated uplink radio resource is not retrieved if it is not necessary to retrieve the uplink radio resource in the determining whether it is necessary to retrieve a pre- allocated uplink radio resource.
  • a method for allocating an uplink radio resource in a mobile terminal including: reporting that an uplink radio resource is retrievable to a base station because the mobile terminal has no uplink packet to be transmitted through an uplink radio resource; continuously determining whether the mobile terminal has a new uplink packet or not after the base station temporally retrieves an uplink radio resource; and reallocating an uplink radio resource by requesting the base station to reallocate the temporally retrieved uplink radio resource if the mobile terminal has the new uplink packet.
  • a method for allocating a radio resource in a mobile telecommunication system can effectively allocate, retrieve, and reallocate a radio resource according whether there is a packet to be transmitted to a mobile terminal allocated with a radio resource.
  • the method for allocating a radio resource retrieves a radio resource not in use by observing a transmission buffer or based on a timer when there is no transmission packet data for a terminal in case of a persistent scheduling method for a real time service. Therefore, limited radio resources can be variably and flexibly used.
  • the method for allocating a radio resource retrieves a radio resource of the terminal if there is no packet data to be transmitted to/from a certain terminal for a predetermined time and then allocates the retrieved radio resource to another terminals when a radio resource is scheduled based on a persistent scheduling method or a semi-static scheduling method for a real time service. Therefore, the usability of a radio resource is improved.
  • FIG. 1 illustrates AMR codec packet generation in a conventional non-realtime VoIP service.
  • Fig. 2 illustrates a control signaling block and radio resource in a TTI forming a radio frame.
  • Fig. 3 is a flowchart illustrating a process of allocating downlink (DL) radio resources in a radio resource allocation method for a telecommunication system in accordance with an embodiment of the present invention.
  • Fig. 4 is a timing diagram for the method shown in Fig. 3.
  • FIG. 5 is a flowchart illustrating a method for allocating an uplink (UL) radio resource in a radio resource allocation method for a telecommunication system in accordance with an embodiment of the present invention.
  • Fig. 6 is a timing diagram for the UL resource allocation method shown in Fig. 5.
  • FIG. 3 is a flowchart illustrating a process of allocating downlink (DL) radio resources in a radio resource allocation method for a telecommunication system in accordance with an embodiment of the present invention
  • Fig. 4 is a timing diagram for the method shown in Fig. 3.
  • the DL radio resource allocation method estimates a silent period for a real time service, for example, a VoIP service, by analyzing a state of a transmission buffer of a base station 31, retrieves radio resources which were allocated to a terminal 32 according to a persistent scheduling method, and re-allocates the retrieved radio resources when transmission packet data is generated. Therefore, the DL radio resource allocation method according to the present embodiment prevents DL radio resources from being ineffectively occupied.
  • a base station 31 allocates a DL radio resource to a terminal 32 for a real time service during a negotiation process for call set-up, which is performed when a related service starts.
  • the terminal 32 obtains scheduling information according to a persistence scheduling method through a control message for call set-up from the base station 31. That is, the terminal 32 obtains general properties for DL radio resource scheduling patterns through scheduling information, for example, a scheduling period, allocated radio resources, or a transmit format of packet data such as modulation information and encoding information.
  • the base station 31 transmits packet data to the terminal 32 through the radio resource allocated at the step S302.
  • the terminal 32 receives packet data by accessing the previously allocated radio resource according to the obtained scheduling information at step S308 without using scheduling information transmitted at every TTI.
  • the base station 31 observes a transmission buffer of the base station 31 for real time service at step S310.
  • the base station 31 turns on a transmission buffer observation timer T bu ff e r if no packet data is in the transmission buffer.
  • a time interval between packets is assumed about 20msec.
  • the base station 31 turns on the transmission buffer observation timer T bu ffer 20msec at the end of the active period 12.
  • the base station 31 may turn on a transmission buffer observation timer at the same time when it transmits the last packet data stored in the transmission buffer. On the contrary, the base station 31 resets a transmission buffer observation timer when packet data is inputted to the transmission buffer from an upper layer.
  • the base station 31 generates a DL resource allocation interruption message for retrieving radio resources which are allocated to the terminal 32 according to a persistence scheduling method if a value of a transmission buffer observation timer (T buffer ) is larger than a predetermined threshold value at step S312.
  • the DL radio resource allocation interruption message is generated and transmitted at a layer that dynamically allocates a radio resource, such as a MAC control PDU or a RRC message.
  • the terminal 32 receives the DL radio resource allocation interruption message transmitted from the step S312. Then, the terminal 32 transmits a response message for the received DL radio resource allocation interruption message to the base station 31 at step S316.
  • the base station 31 confirms the response message from the terminal 32 and allocates corresponding radio resources to other terminal at step S318. Therefore, the usability of radio resources can be improved.
  • the base station 31 confirms through ACK or NACK response information from the terminal 32 as the response message for a hybrid automatic repeat request (HARQ) operation.
  • the HARQ operation is for a radio resource that transmits the DL radio resource allocation interruption message.
  • the base station 31 may also confirm a control message, such as a MAC control PDU message or a RRC message, from the terminal 32 as the response message for the DL radio resource allocation interruption message.
  • the base station 31 repeats the step S312 and following steps if the base station 31 receives the NACK response information or corresponding response message thereof.
  • the terminal 32 When the terminal 32 receives the DL radio resource allocation interruption message, the terminal 32 is aware of that previous radio resource allocation information is invalid.
  • the terminal 32 searches scheduling control information according to a radio resource allocation period in previous scheduling information or a DL radio resource allocation period in the DL radio resource allocation interruption message at step S320. Therefore, the terminal 32 receiving the DL radio resource allocation interruption message searches downlink control information in a DL signaling block according to an allocation period and does not transmit ACK or NACK response information for HARQ operation to the base station 31 according to an interval allocated in the previous scheduling information which is not valid anymore.
  • the base station 31 allocates radio resources to other terminals at step S318 and observes a transmission buffer of the base station 31 at step S322. If packet data is inputs the transmission buffer again, the base station 31 resets the transmission buffer observation timer T bu ff e r, re-allocates a DL radio resource to a predetermined terminal 32, and retransmits packet data to the terminal 32 using DL scheduling control information at step S324.
  • the base station 31 may observe the transmission buffer for a predetermined time duration such as 30ms before it transmits the packet data in order to determine whether input packet is a silence indication duration (SID) packet that is transmitted regularly or at one time in a silence period or to determine whether it is a transition time from a silent period to an active period where a voice signal packet starts.
  • SID silence indication duration
  • the terminal 32 While the terminal 32 searches DL scheduling control information according to a discontinuous reception (DRX)/ discontinuous transmission (DTX) period, a radio resource allocation period in previous scheduling information, or a DL radio resource allocation period in a DL radio resource allocation interruption message, the terminal 32 confirms a DL scheduling information unit including an own scheduling identifier (ID) and receives packet data of a radio resource assigned by the scheduling information unit at step S326. After the terminal 32 confirms the DL scheduling control information according to a radio resource reallocation method of the base station 31, the terminal 32 operates according to a predefined persistent scheduling information pattern during call set-up, for example, according to a scheduling period, allocated radio resources, or a transmit format of packet data such as modulation information and encoding information.
  • DRX discontinuous reception
  • DTX discontinuous transmission
  • the terminal 32 is allocated with a new persistent scheduling information pattern from the base station 31 and receives packet data according to the new persistent scheduling information pattern.
  • the base station After reallocating a DL radio resource and transmitting packet data, the base station
  • the terminal 31 can check whether the terminal 32 can normally receives the packet data or not through ACK/NACK information for HARQ operation or additional response messages such as a MAC control PDU or a RRC message from the terminal 32. That is, the base station 31 uses the response message to check whether the terminal 32 normally receives packet data and information about reallocation of a DL radio resource or not.
  • the base station 31 transmits packet data with DL radio resource real- location information if the base station 31 receives NACK information.
  • the base station 31 repeats the step S306 and following steps if the DL radio resource allocation is persistent at the step S324, that is, persist_ind is T in the scheduling information unit.
  • the base station 31 repeats the step S234 if the DL radio resource allocation is temporal at the step S324, that is, persist_ind is '0'.
  • the terminal 32 repeats the step S308 and following steps if the DL radio resource allocation is persistent at the step S324.
  • the terminal 32 repeats the step S320 if the DL radio resource allocation is temporal at the step S324.
  • FIG. 5 is a flowchart illustrating a method for allocating an uplink (UL) radio resource in a radio resource allocation method for a telecommunication system in accordance with an embodiment of the present invention
  • Fig. 6 is a timing diagram for the UL resource allocation method shown in Fig. 5.
  • Fig. 5 shows a procedure of estimating a silent period for a real time service such as a
  • the UL radio resource allocation method can prevent UL radio resources from being occupied ineffectively.
  • a base station 31 allocates UL radio resources to a terminal 32 for a real time service during a negotiation process for call setup for starting a service.
  • the terminal 32 obtains scheduling information according to a persistent scheduling method through a control message for call setup from the base station 31 at step S504. That is, the terminal 32 obtains normal properties for a UL radio resource scheduling pattern, for example, a scheduling period, an allocation radio resource, or a transmit format of packet data such as modulation and encoding information.
  • the terminal 32 transmits packet data using a UL radio resource allocated according to an interval of a scheduling pattern defined according to a persistent scheme or a semi-static scheme instead of UL scheduling control information received at TTI.
  • the base station 31 receives uplink packet data through a regularly allocated UL radio resource.
  • the terminal 32 observes a transmission buffer while transmitting UL packet data to the base station 31 at step S510.
  • the terminal 32 turns on a transmission buffer observation timer T bu ff e r if no packet data is stored in a transmission buffer. Also, the terminal 32 may start a transmission buffer observation timer at the same time of transmitting the last packet data stored in a transmission buffer. On the contrary, the terminal 32 resets a transmission buffer observation timer T bu ff e r when packet data is inputted to a transmission buffer from an upper layer.
  • the terminal 32 if the value of a transmission buffer timer T bu ff e r becomes larger than a predetermined threshold T bu ff e r _ Threshold, the terminal 32 generates a UL radio resource retrieve message to a base station 31 in order to enable the base station 31 to retrieve UL radio resources that are allocated to the terminal 32 according to a persistent scheduling method at step S512.
  • the UL radio resource retrieve message such as a MAC control PDU or a RRC message is generated at a layer that manages scheduling of the terminal 32 and transmitted to the base station 31.
  • the base station 31 After the base station 31 receives the UL radio resource retrieve message, the base station 31 confirms that a corresponding terminal 32 does not need an UL radio resource for a predetermined time. The base station 31 may transmit a UL radio resource retrieve response message to the corresponding terminal 32 at step S514.
  • the base station 31 is informed that corresponding radio resources are retrieved based on a report of the terminal 32, which informs start of a silent period through the UL radio resource retrieve response message. Otherwise, the terminal 32 may report that the allocated radio resources are not retrieved. That is, if an uplink radio resource is available or if a scheduler of the base station 31 determines that it is not proper to retrieve a radio resource allocated to the corresponding terminal 32, the terminal 32 reports that the allocated radio resources are not retrieved.
  • the terminal 32 receives the radio resource response message transmitted from the step S514 and observes a transmission buffer of the terminal. [77] The terminal 32 resets a transmission buffer observation timer T buffer if packet data is inputted to the transmission buffer from an upper layer and transmits information requesting UL radio resource allocation at step S520. Here, such a radio resource real- location requesting procedure is performed only in the terminal 32 that receives information that informs radio resource retrieve in a radio resource retrieve response message transmitted at the step S514.
  • the base station 31 reallocates a UL radio resource to the corresponding terminal 32 at step S522. That is, the base station 31 may allocate radio resources based on a radio resource reallocation scheme of the base station 31 according to a persistent scheduling information pattern that was defined during call setup or a new persistent scheduling information pattern.
  • the persistent scheduling information pattern includes a scheduling interval, allocated radio resources, or a transmit format of packet data such as modulation information and encoding information.
  • the base station 31 After receiving a request of allocating a UL radio resource from the terminal 32, the base station 31 transmits scheduling information which is radio resource reallocation information for allocating UL radio resources at step S524.
  • the terminal 32 searches scheduling control information. That is, the terminal 32 confirms a UL scheduling information unit including an own scheduling identifier in UL scheduling control information by searching scheduling control information.
  • the terminal 32 transmits packet data through a UL radio resource assigned by the UL scheduling information unit at step S528.
  • the base station 31 receives packet data through a radio resource that is regularly allocated at step S530.
  • the terminal 32 does not perform the step S520. If new packet data is inputted to a transmission buffer from an upper layer after the silent period ends, the terminal 32 may transmit packet data through a radio resource assigned by the previous scheduling information.
  • the terminal 32 repeats the steps S504, S506, and 510, and the base station 31 performs the step S508.
  • the method of the present invention described above may be programmed for a computer. Codes and code segments constituting the computer program may be easily inferred by a computer programmer of ordinary skill in the art to which the present invention pertains.
  • the computer program may be stored in a computer-readable recording medium, i.e., data storage, and it may be read and executed by a computer to realize the method of the present invention.
  • the recording medium includes all types of computer-readable recording media.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé d'affectation de ressources radio dans un système de télécommunications mobiles. Le procédé d'affectation d'une ressource radio en liaison descendante dans une station de base consiste à extraire une ressource radio en liaison descendante affectée à un premier terminal mobile si celui-ci ne possède pas un paquet en liaison descendante, vérifier de manière constante s'il y a ou non un nouveau paqut de liaison descendante destiné au premier terminal mobile et extraire une ressource radio affectée à un second terminal mobile s'il y a un nouveau paquet de liaison descendante destiné au premier terminal mobile et réaffecter au premier terminal mobile la ressource radio extraite.
PCT/KR2008/001193 2007-03-09 2008-02-29 Procédé d'affectation de ressources radio Ceased WO2008111749A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/530,568 US20100091728A1 (en) 2007-03-09 2008-02-29 Method for allocating radio resources

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2007-0023696 2007-03-09
KR20070023696 2007-03-09
KR1020070107847A KR101336882B1 (ko) 2007-03-09 2007-10-25 이동통신 시스템에서의 무선자원 할당 방법
KR10-2007-0107847 2007-10-25

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WO2008111749A1 true WO2008111749A1 (fr) 2008-09-18

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WO2011137432A1 (fr) * 2010-04-30 2011-11-03 Interdigital Patent Holdings, Inc. Procédé de multiplexage de données pour de multiples unités d'émission/réception sans fil pour des canaux de liaison descendante à haut débit
CN118201106A (zh) * 2024-05-17 2024-06-14 上海谱域科技有限公司 一种基于5g技术的工业互联网实时数据调度方法

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US20040185788A1 (en) * 2001-05-14 2004-09-23 Interdigital Technology Corporation Dynamic channel quality measurement procedure implemented by a base station for adaptive modulation and coding techniques
WO2005101882A1 (fr) * 2004-04-19 2005-10-27 Telefonaktiebolaget Lm Ericsson (Publ) Allocation dynamique de ressources radio
US20060234716A1 (en) * 2005-04-13 2006-10-19 Nokia Corporation Techniques for radio link resource management in wireless networks carrying packet traffic

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US20040185788A1 (en) * 2001-05-14 2004-09-23 Interdigital Technology Corporation Dynamic channel quality measurement procedure implemented by a base station for adaptive modulation and coding techniques
WO2005101882A1 (fr) * 2004-04-19 2005-10-27 Telefonaktiebolaget Lm Ericsson (Publ) Allocation dynamique de ressources radio
US20060234716A1 (en) * 2005-04-13 2006-10-19 Nokia Corporation Techniques for radio link resource management in wireless networks carrying packet traffic

Cited By (5)

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Publication number Priority date Publication date Assignee Title
WO2011137432A1 (fr) * 2010-04-30 2011-11-03 Interdigital Patent Holdings, Inc. Procédé de multiplexage de données pour de multiples unités d'émission/réception sans fil pour des canaux de liaison descendante à haut débit
CN103210695A (zh) * 2010-04-30 2013-07-17 交互数字专利控股公司 用于复用用于高速下行链路信道的多个无线发射/接收单元的数据的方法
JP2013530588A (ja) * 2010-04-30 2013-07-25 インターデイジタル パテント ホールディングス インコーポレイテッド 高速ダウンリンクチャネルのための複数の無線送受信ユニットのためのデータを多重化するための方法
US9451601B2 (en) 2010-04-30 2016-09-20 Interdigital Patent Holdings, Inc. Method for multiplexing data for multiple wireless transmit/receive units for high speed downlink channels
CN118201106A (zh) * 2024-05-17 2024-06-14 上海谱域科技有限公司 一种基于5g技术的工业互联网实时数据调度方法

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