WO2008069618A2 - Procédé de réalisation d'un rapport d'état dans un système de communication mobile - Google Patents

Procédé de réalisation d'un rapport d'état dans un système de communication mobile Download PDF

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Publication number
WO2008069618A2
WO2008069618A2 PCT/KR2007/006361 KR2007006361W WO2008069618A2 WO 2008069618 A2 WO2008069618 A2 WO 2008069618A2 KR 2007006361 W KR2007006361 W KR 2007006361W WO 2008069618 A2 WO2008069618 A2 WO 2008069618A2
Authority
WO
WIPO (PCT)
Prior art keywords
base station
user equipment
status report
rlc
parameter
Prior art date
Application number
PCT/KR2007/006361
Other languages
English (en)
Other versions
WO2008069618A3 (fr
Inventor
Young Dae Lee
Sung Jun Park
Seung June Yi
Sung Duck Chun
Original Assignee
Lg Electronics Inc.
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 KR1020070003284A external-priority patent/KR101306724B1/ko
Application filed by Lg Electronics Inc. filed Critical Lg Electronics Inc.
Priority to US12/312,980 priority Critical patent/US8274950B2/en
Publication of WO2008069618A2 publication Critical patent/WO2008069618A2/fr
Publication of WO2008069618A3 publication Critical patent/WO2008069618A3/fr

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Classifications

    • 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
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1685—Details of the supervisory signal the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal
    • 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
    • H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
    • 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
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link

Definitions

  • the present invention relates to a mobile communication system, and more particularly, to a method of performing status report in a mobile communication system and a user equipment for the same.
  • FIG. 1 illustrates a network structure of a universal mobile telecommunications system (UMTS).
  • UMTS universal mobile telecommunications system
  • the UMTS includes a user equipment (UE), a UMTS terrestrial radio access network (UTRAN), and a core network (CN).
  • the UTRAN includes at least one radio network sub-systems (RNS), wherein each RNS includes a radio network controller (RNC) and at least one base station (Node B) managed by the RNC. At least one cell exists in one Node B. Also, since the UMTS is a cellular based communication system, handover is performed as a user equipment moves from a current cell, to which the user equipment belongs, to another cell.
  • a base station of a cell to which the user equipment currently belongs will be referred to as a source base station (source eNB), and a base station of a cell to which the user equipment will newly accesses will be referred to as a target base station (target eNB).
  • source eNB source base station
  • target eNB target base station
  • LTE long term evolution
  • user data of all downlinks, which are stored in the source base station are forwarded to the target base station, and user data of all uplinks, which have been successfully received in the source base station, are transmitted to the core network.
  • All new downlink user data which have reached the core network during a handover procedure are directly transmitted from the core network to the target base station.
  • the target base station transmits all the user data, which have been received from its core network and the source base station, to the user equipment.
  • the aforementioned handover procedure according to the related art may cause waste of radio and wire resources for the following reasons.
  • the target base station determines that the user equipment has not received the data and should transmit the same user data to the user equipment again.
  • the user equipment determines that transmission of the user data has been failed and should transmit the same user data to the target base station again.
  • the user equipment moves from one base station to another base station.
  • the user data are arrived in aGW in an external internet network, and undergo encoding and header compression therein and then are forwarded to the base station to which the user equipment currently accesses.
  • the RLC of the base station eNB reconstructs each user data block suitable for a wireless environment of a transmission timing point and then RLC PDUs to a corresponding user equipment.
  • the user equipment is located at the boundary between regions managed by two base stations, i.e., the current user equipment is connected with the base station A and enters the base station B while moving.
  • the wireless environment between the user equipment and the base station A becomes poorer whereas the wireless environment between the user equipment and the base station B becomes better. This means that the probability that the RLC PDU transmitted from the base station A will not be successfully arrived in the user equipment becomes increased.
  • the base station A determines that a connection point of the user equipment should be changed to the base station B, and commands the user equipment to connect with the base station B.
  • the data blocks which the base station A has not successfully transmitted to the user equipment should be forwarded from the base station A to the base station B, so that the base station B can transmit the data blocks to the user equipment again.
  • retransmission of the data which have been successfully received in the user equipment should be avoided within the limits of the possible. This is because that unnecessarily repeated transmission of the same data may be a waste when considering that possible radio resources are limited. Accordingly, it is necessary to reduce forwarding of the data blocks, which have been successfully received in the user equipment, from the base station A to the base station B within the limits of the possible.
  • the present invention is directed to a method of performing status report in a mobile communication system and a user equipment for the same, which substantially obviate one or more problems due to limitations and disadvantages of the related art.
  • An object of the present invention is to provide a method of performing status report in a mobile communication system and a user equipment for the same, in which repeated transmission of same data is avoided in the mobile communication system to efficiently use radio resources.
  • a method of performing reception status report in a specific protocol layer of a user equipment which receives data transmitted from a base station in a mobile communication system comprises performing reception status report of at least one first data block in the protocol layer in accordance with a first value of at least one parameter, the at least one first data block being transmitted from the base station, changing the first value of the at least one parameter to a second set value if a previously set event occurs or if at least one condition is satisfied, and performing reception status report of at least one second data block in accordance with a second set value of the at least one parameter, the at least one second data block being transmitted from the base station.
  • a user equipment which performs reception status report of data transmitted from a base station in a mobile communication system, is configured to perform the steps of performing reception status report of at least one first data block in the protocol layer in accordance with a first value of at least one parameter, the at least one first data block being transmitted from the base station, changing the first value of the at least one parameter to a second set value if a previously set event occurs or if at least one condition is satisfied, and performing reception status report of at least one second data block in accordance with a second set value of the at least one parameter, the at least one second data block being transmitted from the base station.
  • FIG. 1 illustrates a network structure of a UMTS (Universal Mobile Telecommunications System);
  • UMTS Universal Mobile Telecommunications System
  • FIG. 2 is a block diagram illustrating a structure of a radio protocol used in UMTS
  • FIG. 3 illustrates a structure of a status PDU of a control PDU
  • FIG. 4A is a flow chart illustrating a method of transmitting status information in accordance with the preferred embodiment of the present invention.
  • FIG. 4B is a flow chart sequentially illustrating signal flows in a procedure of performing handover.
  • FIG. 5 is a block diagram illustrating a main configuration of a user equipment which is a transmitting side of RLC status report.
  • the present invention can be applied to a downlink or uplink of various kinds of communication systems.
  • the downlink means communication from a base station (BS) to a mobile station (MS), and the uplink means communication from a user equipment to a base station.
  • the base station generally means a fixed station which communicates with a user equipment, and may be referred to as other terminologies such as node-B, base transceiver system (BTS), and access point.
  • the user equipment may be fixed or have mobility, and may be referred to as other terminologies such as user terminal (UT), subscriber station (SS), and wireless device.
  • the present invention can be applied to a cellular based communication system. Accordingly, a protocol structure of UMTS which is a representative cellular system will be described, and then a method of transmitting status information based on UMTS and a user equipment for implementing the same will be described in detail.
  • FIG. 2 is a block diagram illustrating a structure of a radio protocol used in the UMTS. Radio protocol layers as shown exist in pairs in the user equipment and the UTRAN, and are in charge of data transmission of a radio interval.
  • a physical (PHY) layer which is a first layer serves to transmit data to a radio interval by using various radio transmission techniques, and a reliable data PHY layer is connected with a medium access control (MAC) layer through a transport channel, wherein the MAC layer is an upper layer of the PHY layer.
  • PHY physical
  • MAC medium access control
  • MAC, RLC, PDCP, and BMC (Broadcast/Multicast Control) layers exist in a second layer.
  • the MAC layer serves to map various logical channels with various transport channels, and also serves to perform logical channel multiplexing which maps several logical channels with one transport channel.
  • the MAC layer is connected with the RLC layer through a logical channel, wherein the RLC layer is an upper layer of the MAC layer.
  • the logical channel is divided into a control channel and a traffic channel depending on types of transmitted information, wherein the control channel transmits information of a control plane and the traffic channel transmits information of a user plane.
  • the RLC layer serves to ensure QoS for each radio bearer (RB) and transmit data thereof.
  • the RLC layer will be described later.
  • the BMC layer exists above the RLC layer, schedules a cell broadcast message, and broadcasts the cell broadcast message to user equipments located in a specific cell.
  • the PDCP layer is located above the RLC layer, and allows data to be efficiently transmitted in a radio interval having a relatively small bandwidth by using IP packet such as IPv4 or IPv6.
  • a radio resource control (RRC) layer located in a third layer is defined in a control plane only, controls parameters of the first and second layers in respect of setup, re-setup and release of the RBs, and serves to control logical channels, transport channels and physical channels.
  • RRC radio resource control
  • a basic function of the RLC layer is to ensure QoS of each RB and transmit data thereof. Since the RB service is a service provided to an upper layer by the second layer of the radio protocol, QoS is affected by the entire of the second layer. Especially, QoS is greatly affected by the RLC layer.
  • the RLC layer provides an independent RLC entity for each RB to ensure unique QoS of RB, and also provides three RLC modes, i.e., a transparent mode (TM), an unacknowledged mode (UM), and an acknowledged mode (AM) to support various kinds of QoS. Since the three RLC modes respectively support different kinds of QoS, they are different from one another in their operation method and their detailed function. Accordingly, the RLC layer should be considered depending on its operation mode.
  • TM transparent mode
  • UM unacknowledged mode
  • AM acknowledged mode
  • the TM RLC is a mode which does not add any overhead to RLC service data unit (SDU) transmitted from its upper level in constituting RLC PDU.
  • SDU service data unit
  • the TM RLC is referred to in that the RLC passes through SDU in a transparent mode.
  • the TM RLC serves to perform the following functions in the user plane and the control plane owing to its characteristic as aforementioned.
  • the TM RLC serves to transmit real time circuit data such as voice or streaming of a circuit service domain (CS domain). Also, in the control plane, since there is no overhead within the RLC, the TM RLC serves to transmit RRC message from an unspecified user equipment in case of an uplink, and serves to transmit RRC message broadcasted to all user equipments within a cell in case of a downlink.
  • CS domain circuit service domain
  • the non-transparent mode includes the unacknowledged mode (UM) having no acknowledgement for data transmission and the acknowledged mode (AM) having acknowledgement for data transmission.
  • UM unacknowledged mode
  • AM acknowledged mode
  • the UM RLC transmits PDUs by adding a PDU header, which includes a sequence number (SN), to each PDU, so that a receiving side can identify which PDU has been lost during transmission, hi accordance with this function, in the user plane, the UM RLC serves to transmit broadcast/multicast data or transmit real time packet data such as voice (e.g., VoIP) or streaming of a packet service domain (PS domain). Also, in the control plane, the UM RLC serves to transmit RRC message which does not require acknowledgement, among RRC messages transmitted to a specific user equipment or a specific user equipment group within a cell.
  • SN sequence number
  • the AM RLC configures PDUs by adding a PDU header including SN thereto.
  • the AM RLC is different from the UM RLC in that the receiving side acknowledges the transmitted PDUs.
  • the reason why the receiving side acknowledges the transmitted PDUs in the AM RLC is to request a transmitting side to retransmit PDU which the receiving side has not received.
  • the AM RLC is to ensure error-free data transmission through re-transmission.
  • the AM RLC serves to transmit unreal time packet data such as TCP/IP of the PS domain in the user plane.
  • the AM RLC serves to transmit RRC message which necessarily requires acknowledgement, among RRC messages transmitted to a specific user equipment within a cell.
  • the TM RLC and the UM RLC are used for unidirectional communication whereas the AM RLC is used for bi-directional communication due to a predetermined feedback from the receiving side. Since such bi-directional communication is mainly used in point-to-point communication, the AM RLC uses a dedicated logical channel only.
  • one RLC entity only corresponds to either the transmitting side or the receiving side.
  • both the transmitting side and the receiving side exist in one RLC entity.
  • the AM RLC includes a re-transmission buffer for managing retransmission in addition to a transmission and reception buffer, and uses a transmission and reception window for flow control.
  • the transmitting side of the AM RLC requests a receiving side of a peer RLC entity through polling to provide status information, and the receiving side of the AM RLC transmits a status report to a transmitting side of the peer RLC entity to report its data status.
  • the status report is transmitted in a type of status PDU, and status PDU is transmitted into a data PDU by piggyback to enhance efficiency of data transmission.
  • a reset PDU and a reset ACK PDU are provided.
  • the reset PDU allows an AM RLC entity to request the other AM RLC entity to reset all operations and parameters when a significant error is found during an operation procedure.
  • the reset ACK PUD is used for acknowledgement of the reset PDU.
  • the AM RLC needs several protocol parameters, status parameters, and timer.
  • PDUs used to control data transmission in the AM RLC will be referred to as control PDUs
  • PDUs used to transfer user data will be referred to as data PDUs.
  • a structure of a status PDU of the control PDU will be described in detail with reference to FIG. 3.
  • a D/C field 31 identifies whether a corresponding PDU is a data PDU or a control PDU.
  • a PDU type field 32 specifies whether a corresponding PDU is a status PDU, a piggyback status PDU, a reset PDU, or a reset ACK PDU.
  • the status PDU includes a plurality of super fields (SUFIs) 33-1,..., 33-k.
  • the SUFI indicates information as to which AM RLC PDU has been arrived in the receiving side and which AM RLC PDU has not been arrived in the receiving side, or indicates that the transmitting side will not transmit data any more as it has deleted some RLC SDU.
  • the SUFI is divided into three parts of type, length, and value.
  • the size of the status PDU is variable but is limited to the size of the greatest RLC PDU of a logical channel to which the status PDU is transmitted.
  • FIG. 4 A is a flow chart illustrating a method of transmitting status information in accordance with the preferred embodiment of the present invention
  • FIG 4B is a flow chart sequentially illustrating signal flows in a procedure of performing handover.
  • a procedure of transmitting status information to a base station and a procedure of performing handover will be described. Accordingly, during status report, the user equipment transmits received status information to a network by including the same in the RLC status PDU.
  • a previously set status i.e., a previously set event occurs in the user equipment or if one or more conditions are satisfied (SlOl)
  • the user equipment changes a status information transmission policy depending on a corresponding status (S 102).
  • the user equipment transmits RLC status report to the base station depending on the changed policy (S103).
  • the user equipment If re-transmission is requested from the base station as the base station has not successively received the RLC status report (S 104), the user equipment re-transmits the corresponding RLC status report to the base station (S 105).
  • the RLC status report includes reception status information of downlink data blocks transmitted from the base station to the user equipment.
  • the RLC status report may include either status information of data blocks which have been successfully received, data blocks which have been failed in reception, and data blocks which have been successfully received but have not been decoded normally, among the data blocks of the downlink, transmitted from the base station, or information of requesting re-transmission of data blocks which have been failed in reception or have been received abnormally.
  • change of the status information transmission policy can be performed by changing a set value of at least one parameter used by the RLC entity of the user equipment to allow the user equipment to perform status report to the base station.
  • the parameter used by the RLC entity of the user equipment include set values of various timers used by the RLC entity for status report.
  • the parameter used by the RLC entity of the user equipment include Timer_status_periodic which is a transmission period parameter of the RLC status report, Timer jpoll which is a transmission period parameter of polling to allow the base station to request the user equipment to perform status report, and Timer_statusjprohibit which is a minimum period parameter to prohibit the RLC entity of the user equipment from performing status report.
  • the user equipment can change the status information transmission policy in such a way to increase or decrease at least one of parameter set values related to status report if a previously set status occurs.
  • the listed set parameter is divided into a first value for a general status and a second set value for a specific status which is previously set. hi this way, the first value is used in a general status while the second set value is used in a specific status, whereby at least one among the aforementioned timer values can be increased or decreased.
  • the aforementioned parameters can be forwarded from the RRC or the base station and then set when the RLC entity of the user equipment is set.
  • the previously set status can occur depending on the result of measuring signal quality of a cell to which the user equipment is currently connected and/or a neighboring cell.
  • signal quality of a cell can be identified by strength of a reference signal transmitted from a base station of a corresponding cell, a bit error rate (BER), a frame error rate (FER), etc.
  • Examples of the previously set status include a status where signal quality of a cell to which the user equipment is currently connected is reduced to a value less than a previously set value, a status where signal quality of a cell to which the user equipment is currently connected becomes poorer than signal quality of a neighboring cell, a status where signal quality of a neighboring cell is enhanced to a value more than a previously set value, a status where a cell of best quality is changed among cells whose signal quality is measured by the user equipment, and a status where the user equipment has transmitted a measurement report to the base station.
  • Timer_status_periodic or Timerjpoll is short to more frequently transmit status information and frequently check the transmission status.
  • the previously set status is not limited to the aforementioned examples only.
  • Examples of the previously set status may include statuses opposite to the aforementioned examples, i.e., the status where communication quality of a cell to which the user equipment is currently connected is increased to a value more than a previously set value, the status where communication quality of a cell to which the user equipment is currently connected becomes better than communication quality of a neighboring cell, and the status where communication quality of a neighboring cell is reduced to a value less than a previously set value, hi this case, it is preferable that Timer_status_periodic or Timer_poll is relatively long to occasionally transmit status information and occasionally check the transmission status.
  • the RLC state report message is repeatedly transmitted until the base station reports that a corresponding message has been successfully received therein. It is preferable that handover is performed after successful reception of the message is reported if handover is requested from the base station.
  • transmission of the RLC status report can be limited to the number of times previously set in the user equipment. This is because that although the RLC status report is needed to be exactly transmitted to the base station, desirable communication cannot be maintained continuously if a too long time passes for exact message transmission when it is intended to perform handover in the boundary of cells.
  • the base station can use a physical layer channel, such as channel quality information channel (CQI channel), pilot channel, and Ll /L2 control channel, to report a reception status of the RLC status report.
  • a physical layer channel such as channel quality information channel (CQI channel), pilot channel, and Ll /L2 control channel
  • CQI channel channel quality information channel
  • pilot channel pilot channel
  • Ll /L2 control channel Ll /L2 control channel
  • the base station sets CQI to a previously set specific value and then transmits the set value to the user equipment to report the reception status of the status report.
  • the CQI set to the specific value is received in the user equipment when the user equipment monitors the CQI channel, the user equipment can determine that the RLC status report has been successfully received.
  • the base station transmits a specific pilot pattern, which is previously set, to the user equipment to report the reception status of the status report. If the pilot channel of the specific pattern is received, the user equipment can determine that the RLC status report has been successfully received.
  • the L1/L2 control channel is to report allocation information of radio resources of a downlink and an uplink to each user equipment, and the base station can transmit information as to whether the RLC status report has been successfully received, through the L1/L2 control channel.
  • FIG. 4B is a flow chart illustrating a handover procedure according to the preferred embodiment of the present invention.
  • the user equipment If a status which satisfies a predetermined condition occurs, the user equipment a measurement report to the base station (S201), wherein the predetermined condition is previously set. At this time, if the user equipment transmits the measurement report to the base station at a predetermined number of times or greater, use of the changed status information transmission policy can be stopped.
  • the source base station determines handover with reference to the measurement report received from the user equipment.
  • the source base station transmits a handover preparation message to the target base station (target eNB), wherein the handover preparation message includes context data (S202).
  • the target base station forwards resource setup information (context confirmation) of the user equipment to the source base station along with a new temporary identifier (C- RNTI) of the user equipment after ensuring resources to be allocated to the corresponding user equipment (S203). If the user equipment receives a handover command from the source base station (S204), the source base station starts transmission of user data to the target base station.
  • resource setup information Context confirmation
  • C- RNTI new temporary identifier
  • the user equipment resets the wireless environment in such a way to synchronize timing with respect to the target base station (S205). If the target base station responds to the user equipment by using timing information, the user equipment transmits a handover confirmation message to the target base station (S206).
  • the target base station reports success of handover to the source base station (S207a), and the location of the user equipment is updated in a core network (MME/UPE) (S207b).
  • MME/UPE core network
  • the user equipment may continue to use the parameter set value of the RLC entity even after moving to a new cell when a previously set event occurs or a status which satisfies a predetermined condition occurs.
  • the user equipment may use a new parameter set value of the RLC entity, which has been forwarded from a base station of a new cell, after moving to the new cell.
  • the user equipment may be commanded from the base station to stop use of the changed parameter set value of the RLC entity.
  • the user equipment may use the new parameter set value of the RLC entity, which has been forwarded from the base station of the new cell, as described above.
  • the user equipment may again use the parameter set value which corresponds to a value before change.
  • FIG. 5 is a block diagram illustrating a main configuration of the user equipment which is a transmitting side of the RLC status report.
  • the user equipment 100 includes an input module 110 for selecting a desired function or inputting information, a display module 120 displaying various kinds of information for operating the user equipment 100, a memory module 130 for storing various programs required to operate the user equipment 100 or data to be transmitted to a receiving side, a wireless communication module 140 for receiving an external signal and transmitting data to the receiving side, an audio processor 150 for converting a digital audio signal into an analog audio signal, amplifying the converted audio signal, and outputting the amplified signal to a speaker (SP) or amplifying an audio signal from a mike (MIC) and converting the amplified audio signal into a digital audio signal, a counter 160 for performing transmission of status information as much as the number of times which are previously set, and a control module 170 for controlling entire driving of the user equipment 100.
  • SP speaker
  • MIC mike
  • control module 170 includes a monitoring module 171 for checking whether a previously set status occurs, a setting module 172 for changing the status information transmission policy of the user equipment in accordance with the occurring status, and a transmission module 173 for transmitting status information of the user equipment to the base station in accordance with the changed policy.
  • the setting module 172 changes the set parameter used in the RLC entity of the user equipment in accordance with the occurring status.
  • the user equipment 100 may further include a receiving module 173 for receiving information as to whether the status information has been successfully received, from the base station.
  • the transmission module may further include a function of repeatedly performing transmission of the status information until successful reception is reported from the base station.
  • the base station and the user equipment can exactly identify user data, which have been successfully transmitted, before handover, unnecessary repeated transmission can be avoided after handover, thereby enhancing transmission efficiency and efficiently using network resources.
  • the base station means a terminal node of a network which directly performs communication with the user equipment.
  • a specific operation which has been described herein as being performed by the base station may be performed by an upper node of the base station as the case may be.
  • various operations performed for communication with the user equipment in the network which includes a plurality of network nodes along with the base station may be performed by the base station or network nodes other than the base station.
  • the base station may be replaced with terms such as a fixed station, Node B, eNode B (eNB), and access point.
  • the user equipment may be replaced with terms such as mobile station (MS) and mobile subscriber station (MSS).
  • the embodiments according to the present invention may be implemented by various means, for example, hardware, firmware, software, or their combination. If the embodiment according to the present invention is implemented by hardware, the method according to the embodiment of the present invention may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, etc.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGAs field programmable gate arrays
  • processors controllers, microcontrollers, microprocessors, etc.
  • the random access method in the mobile communication system according to the embodiment of the present invention may be implemented by a type of a module, a procedure, or a function, which performs functions or operations described as above.
  • a software code may be stored in a memory unit and then may be driven by a processor.
  • the memory unit may be located inside or outside the processor to transmit and receive data to and from the processor through various means which are well known.
  • the present invention is applicable to a wireless communication system such as a mobile communication system and a wireless internet system.

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

Abstract

L'invention concerne un procédé de réalisation d'un rapport d'état de réception dans un système de communication mobile, et notamment un procédé de réalisation d'un rapport d'état de réception dans une couche de protocole spécifique d'un équipement utilisateur recevant des données émises à partir d'une station de base dans un système de communication mobile. Ledit procédé consiste à réaliser un rapport d'état de réception d'au moins un premier bloc de données dans la couche de protocole selon une première valeur d'au moins un paramètre, à modifier la première valeur dudit paramètre en une seconde valeur déterminée si un événement prédéterminé se produit ou si au moins une condition est satisfaite, puis à réaliser un rapport d'état de réception d'au moins un second bloc de données selon une seconde valeur déterminée dudit paramètre, le second bloc de données étant émis à partir de la station de base.
PCT/KR2007/006361 2006-12-07 2007-12-07 Procédé de réalisation d'un rapport d'état dans un système de communication mobile WO2008069618A2 (fr)

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Application Number Priority Date Filing Date Title
US12/312,980 US8274950B2 (en) 2006-12-07 2007-12-07 Method of performing status report in a mobile communication system

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US86907306P 2006-12-07 2006-12-07
US60/869,073 2006-12-07
KR10-2007-0003284 2007-01-11
KR1020070003284A KR101306724B1 (ko) 2006-12-07 2007-01-11 이동통신 시스템에서의 제어 정보 전송 방법 및 이를구현하는 전송 장치

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WO2008069618A2 true WO2008069618A2 (fr) 2008-06-12
WO2008069618A3 WO2008069618A3 (fr) 2009-10-01

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CN115426667A (zh) * 2022-11-06 2022-12-02 荣耀终端有限公司 切换异常的处理方法、设备及存储介质

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115426667A (zh) * 2022-11-06 2022-12-02 荣耀终端有限公司 切换异常的处理方法、设备及存储介质

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