WO2010093206A2 - 광대역 무선통신 시스템에서 시스템 정보 갱신 방법 및 장치 - Google Patents

광대역 무선통신 시스템에서 시스템 정보 갱신 방법 및 장치 Download PDF

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Publication number
WO2010093206A2
WO2010093206A2 PCT/KR2010/000918 KR2010000918W WO2010093206A2 WO 2010093206 A2 WO2010093206 A2 WO 2010093206A2 KR 2010000918 W KR2010000918 W KR 2010000918W WO 2010093206 A2 WO2010093206 A2 WO 2010093206A2
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sfh
change
information
superframe
changed
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PCT/KR2010/000918
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English (en)
French (fr)
Korean (ko)
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WO2010093206A3 (ko
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조희정
육영수
김용호
류기선
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(주)엘지전자
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Priority to CN201080007230.0A priority Critical patent/CN102318235B/zh
Publication of WO2010093206A2 publication Critical patent/WO2010093206A2/ko
Publication of WO2010093206A3 publication Critical patent/WO2010093206A3/ko

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery

Definitions

  • the present invention relates to system information update in a broadband wireless communication system, and more particularly, to a method and apparatus for determining a point in time at which system information transmitted through a super frame header is updated.
  • system information necessary for communication must be transmitted from a base station to a terminal for communication between the base station and the terminal.
  • the base station may transmit system information necessary for communication with the terminal through a super frame header (hereinafter referred to as 'SFH'), and additionally necessary system information may be transmitted through a separate broadcast message.
  • 'SFH' super frame header
  • Essential system information transmitted through SFH among the system information should be updated periodically for continuous communication between the base station and the terminal, and the terminal periodically checks whether the essential system information transmitted from the base station is updated or not. Decoding and updating of system information should be performed.
  • the present invention is to solve the above problems, and provides an operation method and apparatus for preventing unnecessary system information decoding operation of the terminal and the power consumption thereof, and for more efficient system information update.
  • the present invention provides a method and apparatus for efficiently informing a terminal of a time when changed system information is applied.
  • a broadband wireless access for transmitting and receiving data through a superframe (Superframe) including a first superframe header and a second superframe header
  • a method of updating system information of a system comprising: a scheduling counter indicating a change of scheduling information of the second superframe header and system information included in the second superframe header; Encoding an information element (IE) of the frame header, and transmitting a superframe including the encoded information element of the first superframe header and the changed system information to the terminal, the information being included in the superframe
  • the change counter is transmitted by increasing a counter value according to the change of the system information, and applying the changed system information.
  • a change information indicating that the application instruction message is included in a super frame of a predetermined ( ⁇ ⁇ ) is characterized in that the transmission to the mobile station.
  • the change information application indication message is transmitted through the first superframe header, the second superframe header, or a map (MAP) message.
  • MAP map
  • the change information application instruction message is configured with a predetermined counter value
  • the terminal receiving the change information application instruction message includes a counter value of the change counter and the change information application instruction message. It is characterized by determining whether or not to apply the changed system information by comparing the.
  • the change information application indication message is configured with an offset value indicating the application time of the changed system information.
  • the offset value is composed of 1 bit information, and when the bit value is 0, it indicates that system information corresponding to the change counter is applied in a superframe including the change information application indication message. If the bit value is 1, it indicates that system information corresponding to the change counter is applied to the next superframe of the superframe including the change information application indication message.
  • the system information update method for achieving the above object, the superframe including a first super-frame header (P-SFH) and the second super-frame header (S-SFH)
  • a system information updating method of a broadband wireless access system for transmitting and receiving data through a superframe comprising: a scheduling information bitmap, a change counter, and a subpacket change bitmap of an S-SFH Encoding a P-SFH information element (IE); And transmitting a superframe including the encoded P-SFH information element to a terminal, wherein the change counter is incremented and transmitted according to the change of the S-SFH subpacket information element, and the changed S-SFH.
  • the change information application indication message indicating the application time of the subpacket information element is included in a predetermined superframe and transmitted to the terminal.
  • the S-SFH subpacket (SP) change bitmap is composed of three bits indicating a change state of three subpackets, and the S-SFH subpacket (SP) change bitmap is changed when the information element of a specific subpacket is changed.
  • the bit at a specific position of the SFH subpacket (SP) change bitmap may be toggled.
  • the change information application indication message characterized in that delivered through the P-SFH, the S-SFH or MAP (MAP) message.
  • the change information application instruction message is configured with a predetermined counter value
  • the terminal receiving the change information application instruction message includes a counter value of the change counter and the change information application instruction message. It is characterized by determining whether or not to apply the changed system information by comparing the.
  • the change information application instruction message is composed of a plurality of change information application instruction messages or a plurality of sub information so as to independently indicate the application time of the changed plurality of S-SFH subpacket information elements. Characterized in that it is composed of the bitmap (bitmap) information represented by the number of bits (bit) of the number of packets, characterized in that delivered.
  • bitmap bitmap
  • the change information application indication message is configured with an offset value indicating the application time of the changed S-SFH subpacket information element.
  • a superframe including a first super-frame header (P-SFH) and the second super-frame header (S-SFH) A system information updating method of a broadband wireless access system for transmitting and receiving data through (Superframe), the method comprising: receiving a superframe including the P-SFH from a base station; Decoding a P-SFH information element (IE) including a scheduling information bitmap, a change count, and a subpacket change bitmap of an S-SFH in the received superframe; Comparing the stored change counter with the received change counter to determine whether the S-SFH subpacket information element has changed; If the S-SFH subpacket information element is changed, performing a system information update operation with reference to a change information application indication message indicating a time point at which the changed S-SFH subpacket information element is applied.
  • IE P-SFH information element
  • the change information application indication message is composed of a predetermined counter value or an offset value indicating an application time point of the changed S-SFH subpacket information element. It is received through the SFH, the S-SFH or MAP (MAP) message.
  • MAP MAP
  • a superframe including a first super-frame header (P-SFH) and the second super-frame header (S-SFH)
  • a system information update device of a broadband wireless access system for transmitting and receiving data through a network comprising: a scheduling information bitmap, a change count, and a subpacket change bitmap of an S-SFH
  • An encoder for encoding a P-SFH information element (IE) When the S-SFH subpacket information element is changed, the change counter of the S-SFH is changed to increase by 1 each time the S-SFH subpacket is changed, and indicates the application time point of the changed S-SFH subpacket information element.
  • a controller for controlling a change information application indication message to be included in a predetermined superframe and transmitted to the terminal; And a transmitter for transmitting a superframe including the changed S-SFH subpacket, the change counter of the changed S-SFH, and a change information application indication message.
  • a system information updating apparatus of a broadband wireless access system for transmitting / receiving data through a network comprising: an S-SFH change counter and a subpacket change bitmap indicating a change of system information from a base station, and a change indicating an application time point of the changed system information
  • a memory storing a change counter and a subpacket change bitmap of the S-SFH;
  • a controller for controlling the decoding and updating operations of S-SFH subpackets by comparing the change counter and the change bitmap stored in the memory with the received change counter and the change bitmap. Is performed with reference to the received change information application indication message.
  • 1 is a diagram schematically showing a higher level frame structure.
  • FIG. 2 is a diagram schematically showing a frame structure of the FDD scheme.
  • FIG. 3 is a diagram schematically illustrating a frame structure of a TDD scheme.
  • FIG. 4 is a flowchart sequentially illustrating a process of detecting an information error in a P-SFH received from a base station by a terminal according to an embodiment of the present invention.
  • FIG. 5 is a diagram illustrating an embodiment in which a change information application indication message indicating that changed system information is applied at one common application time is included in a P-SFH and transmitted.
  • FIG. 6 is a diagram illustrating another embodiment in which a change information application indication message indicating that changed system information is applied at one common application point is transmitted in a P-SFH.
  • FIG. 7 is a diagram illustrating an embodiment in which a change information application indication message indicating that changed system information is applied at one common application time is included in a map MAP and transmitted.
  • FIG. 8 is a diagram illustrating an embodiment in which a change information application indication message is transmitted so that changed system information may be applied at independent application points.
  • FIG. 9 is a diagram illustrating another embodiment in which a change information application indication message is transmitted so that changed system information may be applied at independent application points.
  • FIG. 10 is a diagram illustrating an embodiment of delivering an applied version of modified system information through each S-SFH SP.
  • FIG. 11 is a diagram illustrating an embodiment of delivering an application offset of changed system information through each S-SFH SP.
  • FIG. 12 is a diagram illustrating an embodiment in which application information of changed system information is expressed and transmitted in a bitmap form.
  • FIG. 13 is a diagram illustrating a method in which a base station informs whether and when a changed system information is applied through repeated transmission of each S-SFH SP.
  • FIG. 14 is a diagram illustrating a method in which a base station informs whether and when a changed system information is applied through a bitmap indicating repeated transmission of each S-SFH SP and repeated transmission of an SP.
  • FIG. 15 is a diagram illustrating a method of determining an application time point of an implicitly changed system information through a scheduling bitmap of an S-SFH SP.
  • 16 is a block diagram schematically illustrating a configuration of a base station for performing a system information update operation according to an embodiment of the present invention.
  • 17 is a block diagram schematically illustrating a configuration of a terminal performing a system information update operation according to an embodiment of the present invention.
  • the communication system of the present invention includes a base station and a terminal as a system for providing various communication services such as voice and packet data.
  • the terminal of the present invention may be referred to as a subscriber station (SS), a user equipment (UE), a mobile equipment (ME), a mobile station (MS), and the like, and has a communication function such as a mobile phone, a PDA, a smart phone, a laptop, and the like.
  • SS subscriber station
  • UE user equipment
  • ME mobile equipment
  • MS mobile station
  • a communication function such as a mobile phone, a PDA, a smart phone, a laptop, and the like.
  • a portable device equipped with a portable device or a PC such as a vehicle-mounted device.
  • the base station of the present invention refers to a fixed point for communicating with the terminal, and may be used in terms of a base station (BS), an evolved-NodeB (eNB), a base transceiver system (BTS), an access point, and the like.
  • BS base station
  • eNB evolved-NodeB
  • BTS base transceiver system
  • One or more cells may exist in one base station, and an interface for transmitting user traffic or control traffic may be used between base stations.
  • downlink means a communication channel from the base station to the terminal
  • uplink means a communication channel from the terminal to the base station.
  • the multiple access scheme applied to the wireless communication system of the present invention includes Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Single Carrier-FDMA (SC-FDMA), and Orthogonal (OFDMA). Frequency division multiple access) or other known modulation techniques.
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • SC-FDMA Single Carrier-FDMA
  • OFDMA Orthogonal Frequency division multiple access
  • the multiple access schemes for downlink and uplink transmission may be different from each other.
  • downlink may use OFDMA technique and uplink may use SC-FDMA technique.
  • 1 is a diagram schematically showing a higher level frame structure.
  • the frame structure applied to the system of the present invention may be a basic component of a frame of 5ms, the frame may be defined as the interval between preambles as one basic transmission unit.
  • the frame may include at least one subframe, and may include a plurality of transmission time intervals (TTIs) having different sizes.
  • TTI is a basic unit of scheduling performed in a medium access control (MAC) layer, and the TTI may be referred to as a radio resource allocation unit.
  • MAC medium access control
  • a super frame including a plurality of frames is configured, and the super frame may be configured, for example, in units of 20 ms.
  • system configuration information and broadcast information for initial fast cell selection and low latency service are set as a transmission unit, and generally two to six frames are set as one transmission unit. It consists of super frames.
  • each 5ms frame consists of a plurality of sub-frames, and each subframe consists of a plurality of OFDM / OFDMA symbols.
  • Each super frame includes one superframe header (SFH) including a broadcast channel, and the SFH is located in the first subframe of the superframe.
  • SFH superframe header
  • the frame structure may be designed according to a bandwidth of a system channel, a duplex scheme, a cyclic prefix length, and the like.
  • FIG. 2 is a diagram schematically illustrating a frame structure of a frequency division duplex (FDD) scheme.
  • FDD frequency division duplex
  • downlink and uplink transmissions are distinguished in the frequency domain, and all subframes in each frame are capable of both downlink and uplink transmissions.
  • a UE in FDD mode may receive a data burst in any downlink subframe while simultaneously accessing an uplink subframe.
  • a 20 ms super frame includes four 5 ms frames F0, F1, F2, and F3, and one frame F2 includes eight subframes SF0, SF1, SF2, SF3, SF4, SF5, SF6, SF7) and Idle time interval of 62.86 ⁇ s.
  • each subframe may be composed of seven OFDM symbols SO, S1, S2, S3, S4, S5, and S6.
  • TDD time division duplex
  • downlink and uplink transmissions are distinguished in the time domain, and after downlink transmission time intervals, uplink transmission time intervals are allocated to transmit and receive data through downlink and uplink.
  • a 20 ms super frame includes four 5 ms frames F0, F1, F2, and F3, and one frame F2 includes eight subframes SF0, SF1, SF2, SF3, SF4, SF5, SF6, SF7) and Idle time interval of 62.86 ⁇ s.
  • the frame F2 is composed of consecutive D downlink frames and consecutive U uplink frames determined according to a ratio (D: U) of DL and UL, and a ratio of DL and UL is 5: 3.
  • five subframes SF0, SF1, SF2, SF3, SF4 are configured as downlink frames
  • three subframes SF5, SF6, SF7 are configured as uplink frames.
  • One idle symbol for distinguishing the DL and the UL is inserted between the last downlink subframe SF4 and the first uplink subframe SF5 to inform that the switch is switched from the DL to the UL.
  • the gap inserted between the downlink and the uplink is called a TTG (transmit transition gap)
  • the gap inserted between the uplink and the downlink is called a receive transition gap (RTG).
  • uplink transmission can be distinguished.
  • the last downlink subframe SF4 is composed of five OFDM symbols and the last one Idle symbol (S5), the Idle symbol (S5) serves as a transmit / receive transition gap (TGT) for distinguishing the DL and UL.
  • TGT transmit / receive transition gap
  • SFH Super Frame Header
  • P-SFH primary SFH
  • S-SFH secondary SFH
  • the S-SFH may be divided into a plurality of subpackets (hereinafter referred to as 'SP') according to the type or frequency of transmission of system information, and may be preferably divided into three SPs (SP1, SP2, and SP3). .
  • the P-SFH is transmitted every superframe and includes 4bit-LSB information indicating the super frame number and information related to the S-SFH.
  • Information related to S-SFH is 'S-SFH change count' indicating the S-SFH version currently transmitted, 'S-SFH Scheduling information bitmap' indicating whether or not S-SFH is transmitted in the corresponding superframe, S-SFH 'S-SFH size' indicating the number of LRUs allocated for transmission, 'S-SFH number of repetitions' indicating the transmission format of S-SFH, and 'S-SFH' indicating which S-SFH SP has changed SP change bitmap '.
  • the size of the 'S-SFH Scheduling information bitmap' and 'S-SFH SP change bitmap' fields is equal to the total number of SPs of the S-SFH.
  • S-SFH SP information element IE
  • T SP1 transmission period of SP1
  • T SP2 transmission period of SP2
  • T SP3 transmission period of SP3
  • the transmission period of the subpacket may be expressed as, for example, T SP1 ⁇ T SP2 ⁇ T SP3 .
  • the terminal For continuous communication with the base station, the terminal should update the system information delivered through the S-SFH, but even if the system information has not changed decoding and updating the S-SFH is inefficient in terms of power consumption of the terminal,
  • the terminal according to the present invention operates to decode and update the S-SFH when the system information transmitted through the S-SFH is changed.
  • the terminal should detect an information error in the P-SFH received from the base station before updating the system information delivered from the base station.
  • FIG. 4 is a flowchart sequentially illustrating a process of detecting an information error in a P-SFH received from a base station by a terminal according to an embodiment of the present invention.
  • P-SFH includes '4bit-LSB super frame number', 'S-SFH change count' (hereinafter referred to as 'CC'), 'S-SFH scheduling information bitmap', 'S-SFH size'
  • 'CB' a cyclic redundancy check for error detection may be included.
  • the terminal calculates a CRC value based on the received data to check whether there is an error in the information in the P-SFH transmitted through the air interface.
  • the terminal determines whether an error occurs in the information in the P-SFH according to the calculated CRC value.
  • the present invention proposes a process of additionally determining whether an error has occurred by using a 4bit-LSB super frame number field in the P-SFH even when it is determined that no error occurs in a general P-SFH error detection procedure through a CRC. do.
  • the terminal decodes the received P-SFH (S401).
  • the CRC value included in the P-SFH is first decoded to determine whether an error occurs in the information in the P-SFH (S403).
  • the terminal having determined that an error has occurred in the information in the P-SFH may treat the error as occurring in the corresponding superframe and may not perform any operation (S417).
  • the corresponding superframe is determined to have no error (S407).
  • the UE can calculate the CRC for the S-SFH and if it is determined that there is no error in the information in the S-SFH, the UE can take normal operation in the superframe.
  • FIG. 5 is a diagram illustrating a method of notifying application time of changed system information through a P-SFH.
  • the S-SFH change count (CC) and the S-SFH SP change bitmap (CB) transmitted through the P-SFH may be changed by the base station in units of S-SFH subpackets (SP).
  • CC is a change count indicating whether essential system information transmitted through S-SFH is changed
  • SI is a scheduling information bitmap of S-SFH, which is scheduled in a corresponding superframe and delivered to UE.
  • S-SFH SP is shown.
  • CB is a change bitmap of the S-SFH, indicating the SP whose system information has been changed in the corresponding superframe.
  • the CC, SI and CB information of the S-SFH can be delivered through the P-SFH.
  • the CC is 25 and the superframe 1 has not changed the system information in the S-SFH SP1.
  • the SI bitmap is set to '110' to indicate that the current CC is equal to 25 in the P-SFH of Superframe 1 and that the SPs of the scheduled S-SFH are SP1 and SP2. Since the CB does not currently have an SP of the S-SFH changed, it is assumed that the CB is maintained as '000' like the existing CB.
  • the system information belonging to the S-SFH SP IE (s) is changed so that the S-SFH change count is increased in the superframe in which the changed S-SFH SP IE is first transmitted. That is, the count increases from 25 to 27 in superframe 2 when the changed SP1 and SP2 are initially transmitted. At this time, since the count is increased in units of SPs, since two SPs are changed, the CC is increased by two counts to 27.
  • the current CC is increased to 27 in the P-SFH of Superframe 2, and the SI bitmap is set to '110' to indicate that the SPs of the S-SFH scheduled in Superframe 2 are SP1 and SP2.
  • the CB is transmitted with the bit information of the first and second digits toggled to '110' to indicate that SP1 and SP2 have been changed.
  • the CB may set only the value of the bit corresponding to the S-SFH SP (s) to 1 and set the remaining bits to 0 to indicate changed SPs. Even in this case, the CB is transmitted with a bit information of the first and second digits set to '110' to 1 to indicate that SP1 and SP2 have been changed.
  • the CC remains at 27 in the P-SFH of Superframe 3, and the SI bitmap indicates that the SP of the scheduled S-SFH is SP1. Is set to '100' and CB remains '110'.
  • the base station determines whether the changed system information is to be applied as well as whether the system information is currently applied and informs the terminal.
  • the method of informing the base station of the application of the currently applied system information is indicated by a change information application instruction message indicating a common application time or application version, or the application time of a plurality of changed S-SFH subpacket information elements, respectively.
  • a plurality of change information application instruction messages may be configured to inform the terminal so that they can be displayed independently.
  • a change information application instruction message indicating a common application time or application version is used to indicate when to apply changed system information
  • a superframe number or offset value indicating a specific application time or an application version indicating an application version is applied.
  • the UE may inform the terminal of the update operation time through the change count (ACC) information.
  • the change information application indication message may be delivered to the terminal through a P-SFH, S-SFH or MAP (MAP) message.
  • MAP MAP
  • the ACC indicating the application version of the changed system information is included in the P-SFH and transmitted to the terminal, thereby indicating that the changed system information is configured to be applied to one common application time point.
  • the base station transmits the changed S-SFH SP 1 and SP 2 through the second superframe, and then changes the ACC from 25 to 27 to apply the changed S-SFH SP 1 and SP 2 from the third superframe. .
  • the UE After receiving the changed S-SFH SP 1 and SP 2, the UE recognizes that the changed system information is applied from the third superframe in which the ACC is changed and transmitted to the same 27 as the CC, and performs the system information application operation.
  • FIG. 6 is a diagram illustrating another embodiment in which a change information application indication message indicating that changed system information is applied at one common application time is transmitted in a P-SFH.
  • the CC count is increased in units of SPs.
  • the CC count is increased in units of superframes. That is, in superframe 2 when the modified SP1 and SP2 are initially transmitted, the CC increases from 25 to 26.
  • the ACC indicating the changed version of the system information does not increase in units of SPs, but increases in units of superframes like the CCs, and after the base station transmits the changed S-SFH SP 1 and SP 2 through the second superframe, In order to apply the changed S-SFH SP 1 and SP 2 from the first superframe, the ACC is changed from 25 to 26 and transmitted.
  • the UE After receiving the changed S-SFH SP 1 and SP 2, the UE recognizes that the changed system information is applied from the third superframe in which the ACC is changed to 26 equal to the CC and applies the system information.
  • FIG. 7 is a diagram illustrating an embodiment in which a change information application indication message indicating that changed system information is applied at one common application time is included in a map MAP and transmitted.
  • the base station transmits the changed S-SFH SP 1 and SP 2 through the second superframe, and then applies the same ACC to 25 to CC through the MAP to apply the changed S-SFH SP 1 and SP 2 from the third superframe. Change to 26 and send.
  • the subframe (s) for transmitting the corresponding MAP are predefined. That is, for example, the MAP may be previously defined such that the MAP is transmitted every first or every subframe.
  • the UE After receiving the changed S-SFH SP 1 and SP 2 in superframe 2, the UE recognizes that the system information of the changed S-SFH SP 1 and SP 2 is applied from the third superframe in which the ACC transmits the same 26 as the CC. And apply the system information.
  • the CC count increases and the ACC count increases in units of superframes, but the CC count increases in units of SPs and the ACC counts in SP, as in the embodiment of FIG. 5. It can also be configured to increase in units.
  • the change of CC may be described to be changed in units of SPs or units of superframes, but it will be apparent that both methods may be applied to the update operation of the present invention.
  • FIG. 8 is a diagram illustrating an embodiment in which a change information application indication message is transmitted so that changed system information may be applied at independent application points.
  • the base station transmits the changed S-SFH SP 1 and SP 2 through the second superframe, and then changes the ACC1 from 25 to 26 to apply to the changed S-SFH SP 1 from the third superframe to the terminal.
  • the UE After receiving the changed S-SFH SP 1 and SP 2 in the superframe 2, the UE recognizes that the system information of the changed S-SFH SP 1 is applied from the third superframe transmitted by increasing the ACC1 to 26 equal to the CC The system updates the system information.
  • the UE since the ACC2 still has a value of 25 in the third superframe, the UE knows that the changed S-SFH SP 2 is not yet applied, and does not perform the system information update operation of the changed SP 2 and later, ACC2. Is changed to 26 and the system information update operation of the SP 2 is performed.
  • FIG. 9 is a diagram illustrating another embodiment in which a change information application indication message is transmitted so that changed system information may be applied at independent application points.
  • the CC is increased in units of superframes.
  • the CC is increased in units of SPs. Accordingly, the counter of the ACC is also increased in units of SPs.
  • the base station transmits the modified S-SFH SP 1 and SP 2 through the second superframe, and also increases the CC by 27 to reflect the change of SP 1 and SP 2 to 27.
  • the base station changes the ACC1 from 25 to 27 and transmits it to the terminal.
  • the UE After receiving the changed S-SFH SP 1 and SP 2 in Superframe 2, the UE recognizes that the system information of the changed S-SFH SP 1 is applied from the third superframe transmitted by increasing the ACC1 to 27 equal to the CC The application of the system information is performed.
  • the UE since the ACC2 still has a value of 25 in the third superframe, the UE knows that the changed S-SFH SP 2 is not yet applied, and does not perform the system information application operation of the changed SP 2 and later ACC2. Is changed to 27 and the system information application operation of SP 2 is performed.
  • FIG. 10 is a diagram illustrating an embodiment of delivering an applied version of modified system information through each S-SFH SP.
  • the ACC indicating the modified SP application version may be included in each S-SFH subpacket, not the P-SFH, and transmitted.
  • the base station transmits an ACC to each of the modified S-SFH SP 1 and SP 2 through the second superframe.
  • the UE After receiving the changed S-SFH SP 1 and SP 2, the UE recognizes that the system information of the changed S-SFH SP 1 is not applied in Superframe 2 since the ACC transmitted in S-SFH SP 1 is 25. .
  • the UE recognizes that the system information of the S-SFH SP 1 changed in the superframe 3 is applied because the ACC transmitted by being included in the S-SFH SP 1 has increased to 27 in the third superframe, and performs the system information application operation. .
  • FIG. 11 is a diagram illustrating an embodiment of delivering an application offset of changed system information through each S-SFH SP.
  • the change information application indication message may be represented by an offset indicating the application time of the changed S-SFH subpacket information element, as shown in FIG. 11.
  • the base station transmits the modified S-SFH SP 1 and SP 2 through the second superframe.
  • each of the S-SFH SP includes offset information (Apply Superframe Offset (ASO)) indicating the application time of the changed system information.
  • offset information Apply Superframe Offset (ASO)
  • the ASO included in the S-SFH SP 1 and 2 is 1, respectively, so that the system of the S-SFH SP 1 and 2 changed from the third superframe, which is the next superframe, is received. Recognize that information applies.
  • the ASO value when the ASO is configured with 1 bit, when the ASO value is "0b0", it may indicate that the changed system information is applied in the currently received superframe, and when it is "0b1", it may indicate that the changed system information is applied in the next superframe.
  • Table 1 below shows S-SFH ASO consisting of 2 bits according to another embodiment.
  • the S-SFH SP is applied in the current super frame. 01 The S-SFH SP is applied from the next super frame (frame number + 1). 10 The S-SFH SP is applied from frame number + 2. 11 The S-SFH SP is applied from frame number + 3.
  • the S-SFH SP may be applied from the fifth superframe (3 + 2).
  • the ASO is included in the P-SFH to be delivered to the terminal, so that the changed system information is configured to be applied to one common application point (including only one ASO) or each of the S-SFH SPs is applied to an independent application point. It may be represented as being configured (including ASO by the total number of S-SFH SP).
  • FIG. 12 is a diagram illustrating an embodiment in which application information of changed system information is expressed and transmitted in a bitmap form.
  • the change information application indication message may include a bitmap (or a bitmap) to determine whether the base station applies one common application time or application version to the S-SFH SP to which it is currently applied, and whether to apply to each S-SFH SP. bitmap) to be included in the P-SFH for transmission.
  • the bitmap type application indication message may be delivered through MAP or each S-SFH SP, and even S-SFH SPs having the same version may be applied at different time points.
  • the base station transmits the changed S-SFH SP 1 and 2 through the second superframe, and then changes the ACC from 25 to 27 to apply the changed S-SFH SP 1 from the third superframe, and applies the ACB (Apply Set the first bit corresponding to S-SFH SP 1 of Change Bitmap) to 1 and send it.
  • ACB Apply Set the first bit corresponding to S-SFH SP 1 of Change Bitmap
  • the UE may know that the changed system information of S-SFH SP 2 is not yet applied. At this time, it is preferable that the ACC is not changed until the changed system information of S-SFH SP 2 is applied. That is, the base station should not change the ACC until all S-SFH SPs having the same version are applied.
  • FIG. 13 is a diagram illustrating a method in which a base station informs whether and when a changed system information is applied through repeated transmission of each S-SFH SP.
  • the base station may repeatedly transmit the same S-SFH SP in order to increase the probability of receiving system information of the terminal located at the cell edge in consideration of cell coverage.
  • S-SFH SP 1 is transmitted three times (301, 302, 303) and transmitted, and S-SFH SP 2 is transmitted twice (311, 312).
  • the base station may express information indicating whether the transmitted system information is the first or the last repetition in the form of a bitmap as much as the total number of S-SFH SPs or as the total number of S-SFH SPs transmitted in the corresponding superframe.
  • the first bit may be allocated for S-SFH 1 and the second bit for S-SFH 2.
  • FIG. 14 is a diagram illustrating a method in which a base station informs whether and when a changed system information is applied through a bitmap indicating repeated transmission of each S-SFH SP and repeated transmission of an SP.
  • the base station transmits the modified S-SFH SP 1 401 and SP 2 412 through the second superframe.
  • S-SFH SP 1 is assumed to be transmitted two times (401, 402) is repeated over the superframe 2 and superframe 3, S-SFH SP 2 is assumed to be transmitted 412 once through the superframe 2.
  • the first bit of the last repetition indication (LRI) is set to "0" because S-SFH SP 1 first transmits, and the second bit is the first and last repetitive transmission of S-SFH SP 2. Is set to "1".
  • the first bit of the LRI is set to "1" and transmitted.
  • the UE After receiving the increased change count and the changed S-SFH SPs 1 and 2 through the superframe 2, the UE should apply the corresponding S-SFH SP from the superframe or the next superframe in which the LRI bit is set to 1. Recognize. That is, S-SFH SP 1 is applied from the third or fourth superframe, and S-SFH SP 2 is applied from the second or third superframe.
  • the terminal determines that the previous version of the S-SFH SP is applied. In this case, the first repetitive transmission and the last repetitive transmission should be set to the last repetitive transmission.
  • FIG. 15 is a diagram illustrating a method of determining an application time point of an implicitly changed system information through a scheduling bitmap of an S-SFH SP.
  • the implied method described in the embodiment of FIG. 15 means that the base station implicitly recognizes whether or not the base station is applied through the S-SFH SP scheduling bitmap without transmitting the separate information on the currently applied system information. .
  • the base station may repeatedly transmit the same S-SFH SP for cell coverage.
  • the UE may know that the S-SFH SP corresponding to the position where the S-SFH SP scheduling information (SI) is changed from "1" to "0" in consecutive superframes is the last repeated transmission in the immediately preceding superframe.
  • SI S-SFH SP scheduling information
  • the base station transmits the modified S-SFH SP 1 and SP 2 through the second superframe, S-SFH SP 2 is transmitted once through the superframe 2 (1511), S-SFH SP 1 is superframe 2 and super Two repetitions (1501, 1502) are transmitted over frame 3.
  • the UE After receiving the changed S-SFH SP 1 and 2, the UE recognizes that the value of the bit corresponding to S-SFH SP2 of the SI is changed to "1" in the second superframe and changed to "0" in the third superframe.
  • the S-SFH SP 2 transmitted in the second superframe is recognized as the last repetitive transmission.
  • the changed S-SFH SP 2 is applied from the second or third superframe.
  • 16 is a block diagram schematically illustrating a configuration of a base station for performing a system information update operation according to an embodiment of the present invention.
  • the base station includes a receiver 1601, a transmitter 1603, an encoder 1605, and a controller 1609.
  • the encoder 1805 encodes a P-SFH information element (IE) including a scheduling information bitmap, a change count, and a subpacket change bitmap of the S-SFH.
  • IE P-SFH information element
  • the controller 1809 changes the change counter of the S-SFH to increase by 1 each time the S-SFH subpacket is changed, and the S-SFH subpacket change bitmap Is changed to toggle a bit at a specific position corresponding to a specific subpacket change.
  • a change information application indication message indicating the application time of the changed S-SFH subpacket information element is included in a predetermined superframe and controlled to be transmitted to the terminal.
  • the transmitter 1801 transmits a superframe including the changed S-SFH subpacket, the change counter of the changed S-SFH, and a change information application indication message to the terminal.
  • 17 is a block diagram schematically illustrating a configuration of a terminal performing a system information update operation according to an embodiment of the present invention.
  • the terminal includes a transmitter 1701, a receiver 1703, a decoder 1705, a memory 1707, and a controller 1709.
  • the receiver 1701 receives a superframe including a change counter and subpacket change bitmap of the S-SFH indicating a change of system information and a change information application indication message indicating the application time of the changed system information from the base station.
  • the decoder 1705 includes a P-SFH information element (IE) including a scheduling information bitmap, a change count, and a subpacket change bitmap of the S-SFH in the received superframe.
  • IE P-SFH information element
  • the memory 1707 stores an S-SFH change counter and a subpacket change bitmap.
  • the controller 1709 compares the change counter and the change bitmap stored in the memory 1707 with the received change counter and the change bitmap to control decoding and updating operations of the S-SFH subpackets, and according to the system information change.
  • the update operation is performed with reference to the received change information application indication message.
  • the device according to the present invention includes software and hardware necessary for implementing the technical idea of the present invention, for example, an output device (display, speaker, etc.), an input device (keypad, microphone, etc.), memory, Basically includes a transceiver (RF module, antenna, etc.).
  • an output device display, speaker, etc.
  • an input device keyboard, microphone, etc.
  • memory Basically includes a transceiver (RF module, antenna, etc.).
  • RF module radio frequency
  • the method according to the invention described so far may be implemented in software, hardware, or a combination thereof.
  • the method according to the present invention may be stored in a storage medium (eg, mobile terminal internal memory, flash memory, hard disk, etc.) and may be stored in a processor (eg, mobile terminal internal microprocessor). It may be implemented as codes or instructions in a software program that can be executed by.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Computer Security & Cryptography (AREA)
PCT/KR2010/000918 2009-02-12 2010-02-12 광대역 무선통신 시스템에서 시스템 정보 갱신 방법 및 장치 WO2010093206A2 (ko)

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US61/151,850 2009-02-12
US25821609P 2009-11-05 2009-11-05
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KR10-2010-0012916 2010-02-11
KR1020100012916A KR101680660B1 (ko) 2009-02-12 2010-02-11 광대역 무선통신 시스템에서 시스템 정보 갱신 방법 및 장치

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WO2011046386A2 (en) 2009-10-15 2011-04-21 Samsung Electronics Co., Ltd. Apparatus and method for transmitting/receiving system information in broadband wireless communication system
KR101636399B1 (ko) * 2009-10-15 2016-07-05 삼성전자주식회사 광대역 무선통신 시스템에서 시스템 정보를 송수신하기 위한 장치 및 방법
ES2657365T3 (es) * 2015-04-17 2018-03-05 Panasonic Intellectual Property Corporation Of America Señalización del nivel de mejora de la cobertura y empaquetamiento eficiente de información del sistema MTC
KR102441572B1 (ko) * 2017-06-14 2022-09-08 모토로라 모빌리티 엘엘씨 시스템 정보 요청들에 대한 경합 해결 수행

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100606026B1 (ko) * 2004-02-23 2006-07-26 삼성전자주식회사 이동 통신 단말기의 전력을 절감하는 이동 통신 시스템 및그 방법
KR20060089773A (ko) * 2005-02-04 2006-08-09 엘지전자 주식회사 회선 교환 연결 및 패킷 교환 연결을 이용한 데이터송수신 방법
US20070133456A1 (en) * 2005-03-28 2007-06-14 Huawei Technologies Co., Ltd. Method and System for Receiving Multimedia Broadcast/Multicast Service Control Information, and UE Thereof
KR20080015983A (ko) * 2006-08-17 2008-02-21 삼성전자주식회사 광대역 무선접속 시스템에서 프레임 통신 장치 및 방법

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7269145B2 (en) * 2001-12-20 2007-09-11 Samsung Electronics Co., Ltd. Mode transition method for wireless data service in a mobile station
KR20060056038A (ko) * 2004-11-19 2006-05-24 엘지전자 주식회사 이동통신 시스템에서 피아이시에이치의 전송방법
WO2006137624A1 (en) * 2005-06-22 2006-12-28 Electronics And Telecommunications Research Institute Method for allocating authorization key identifier for wireless portable internet system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100606026B1 (ko) * 2004-02-23 2006-07-26 삼성전자주식회사 이동 통신 단말기의 전력을 절감하는 이동 통신 시스템 및그 방법
KR20060089773A (ko) * 2005-02-04 2006-08-09 엘지전자 주식회사 회선 교환 연결 및 패킷 교환 연결을 이용한 데이터송수신 방법
US20070133456A1 (en) * 2005-03-28 2007-06-14 Huawei Technologies Co., Ltd. Method and System for Receiving Multimedia Broadcast/Multicast Service Control Information, and UE Thereof
KR20080015983A (ko) * 2006-08-17 2008-02-21 삼성전자주식회사 광대역 무선접속 시스템에서 프레임 통신 장치 및 방법

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KR20100092393A (ko) 2010-08-20

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