Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W72/00—Local resource management
  • H04W72/30—Resource management for broadcast services
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
  • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• • 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
  • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
• • 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
  • H04W48/14—Access restriction or access information delivery, e.g. discovery data delivery using user query or user detection

Definitions

• the present invention relates generally to a mobile communication system
• FIG. 1 is a diagram illustrating a network structure of a universal mobile
• UMTS telecommunication system
• a UMTS system 10 comprises a user
• UE user equipment
• UTRAN UMTS terrestrial radio access network
• the UE may be a mobile te ⁇ ninal in general.
• the UTRAN 12 may be a mobile te ⁇ ninal in general.
• each RNS comprises at least one of radio network sub-systems (RNSs) 13, and each RNS comprises a
• radio network controller (RNC) 131 and at least one of Node B 132 which is controlled by
• the Node B includes at least one cell 133.
• FIG. 2 is a diagram illustrating a layer structure of radio interface protocol
• the radio interface protocol in mobile communication system. As shown in FIG. 2, the radio interface protocol
• the radio interface protocol comprises vertically a user plane for transmitting user data
• the protocol layers of FIG. 2 comprises Ll (the first layer), L2 (the second
• the layers of FIG 2 correspond to 3 layers from the bottom
• the first layer i.e., the physical (PHY) layer, provides the higher layer with
• the PHY layer is connected to the
• MAC medium access control
• the MAC layer provides a radio link control (RLC) layer with service
• the RLC layer of L2 supports reliable data transmission and may
• SDUs service data units
• RRC radio resource control
• protocol layers is defined on the control plane, may control the logical channels, the
• the RB means a service supported by L2 for
• the RRC layer may broadcast system information through a
• BCCH broad control channel
• SIB system information block
• the UTRAN transmits BCCH modification information to the UEs through a
• PCH paging channel
• FACH forward access channel
• the broadcast/multicast service (MBMS) is explained as follows.
• the MBMS supplies a
• a MBMS service comprises at least one session, MBMS data is
• the UE may receive the
• FIG. 3 is a diagram illustrating channels for MBMS.
• the UTRAN provides
• the UTRAN may set up two types of RBs, i.e., a point-to-
• point RB and a point-to-multipoint RB.
• point-to-point RB corresponds to a bi ⁇
• the point-to-point RB employs a dedicated traffic channel (DTCH) as a
• DCH dedicated channel
• DPCH DPCH
• SCCPCH secondary common control physical channel
• the point-to-multipoint RB corresponds to a uni-directional RB.
• the point-to-multipoint RB may employ the MBMS traffic channel
• MTCH logical channel
• FACH transport channel
• SCCPCH SCCPCH
• the MTCH is configured for each MBMS provided in a cell, is used for
• MCCH which is a logical channel is mapped to the FACH, and the transport
• channel FACH is mapped to the SCCPCH.
• one MCCH is allocated to one cell.
• FIG. 4 is a diagram illustrating a method for transmitting MCCH information through the MCCH. As illustrated in FIG. 4, the MCCH information is
• modification period transmitted through MCCH with two types of periods, i.e., modification period and
• the MCCH information comprises critical information and non-critical
• the non-critical information may be modified in the modification period or in
• the critical information may be modified in the modification
• the MCCH information means a control message regarding MBMS, and the
• control message may be a RRC message.
• the MCCH information includes modified
• MSI service information
• USI unmodified service information
• RB point-to-multipoint RB
• the access information message corresponds to
• the non-critical information, and the other information message corresponds to the critical
• the access information is transmitted per an access period which is equal to or
• the repetition period may comprise multiple of the
• control message includes a MBMS transmission identity.
• the MBMS transmission identity includes a MBMS transmission identity.
• identity comprises a MBMS session identity and a MBMS service identity.
• the MBMS MSI message when the UTRAN transmits the MBMS MSI message, the MBMS MSI message includes
• the UTRAN periodically transmits information regarding whether the MCCH information is modified, thorough a MBMS notification Indicator channel (MICH).
• MICH MBMS notification Indicator channel
• the UE receives information through a MICH instead of a MCCH
• the UTRAN may modify the MCCH information by generating, adding,
• the UTRAN transmits a
• the MSI message includes at least
• the service identity may
• the MBMS transmission identity may comprise a
• the MBMS transmission identity may
• MBMS session identity identifies a service session.
• the service identity may be a
• the UTRAN transmits, through
• a notification indicator (NI) notifying UEs of receiving information through the MICH a notification indicator (NI) notifying UEs of receiving information through the NI
• a UE receives the NI from the UTRAN, the UE is trying to receive the MBMS
• a UE receives a NI notifying the service modification through the MICH, the UE
• the UE receives the MCCH information during the modification period indicated by the NI.
• the UE receives the MSI message, and checks whether
• the MBMS is modified. If the UE detects modification of the MBMS, the UE receives
• the UE receives the MSI and the USI messages
• the UE receives MBMS data through the physical channel SCCPCH to
• the UTRAN may transmit the MBMS data through the MTCH.
• MBMS data may be transmitted through the MTCH.
• the UTRAN transmits a scheduling message to the UE through a MBMS
• MSCH scheduling channel
• the scheduling message includes information regarding a start point and an ending point of
• the UTRAN informs the UE of
• scheduling information (scheduling period) in advance.
• MCCH information is transmitted to UEs using
• the UE receives
• the UE may acquire the
• MCCH reconfiguration causes some problem. That is, in such case that the UE receives the BCCH reconfiguration information through the PCH, the reconfiguration of the MCCH
• DTX cycle discontinuous reception cycle
• the present invention is directed to a channel reconfiguration
• An object of the present invention is to reconfigure promptly a control
• method of reconfiguring a common channel in a communication system comprises
• the method also comprises receiving a
• the method also comprises reconfiguring the first common channel, using the second control message.
• the first common channel is the MCCH
• the second common channel is the MCCH
• the first control message is a MSI message
• the second control message comprises a SIB.
• invention comprises an antenna unit for receiving signals corresponding to a first control
• a radio frequency module for processing the
• FIG. 1 is a diagram illustrating a network structure of a universal mobile
• UMTS telecommunication system
• FIG. 2 is a diagram illustrating a layer structure of radio interface protocol
• FIG. 3 is a diagram illustrating channels for MBMS.
• FIG. 4 is a diagram illustrating a method for transmitting MCCH
• FIG. 5 is a flow chart illustrating a process for reconfiguring a common
• FIG. 6 is a flow chart illustrating a process for reconfiguring a common
• FIG. 7 is a diagram illustrating when the MCCH is reconfigured.
• FIG. 8 is a flow chart illustrating MCCH reconfiguration process in a UE.
• FIG. 9 is a structural diagram illustrating a UE according to the present
• FIG. 5 is a flow chart illustrating a process for reconfiguring a common
• the MCCH is taken as an example
• a UTRAN transmits MCCH configuration
• the MCCH configuration modification information may
• information includes information related to modification of the MICH configuration
• MCCH configuration modification information may be transmitted using SIB
• the MCCH configuration modification information may indicate the SIB
• the UE may monitors MSI message, and if the UE detect the MCCH configuration
• the UE tries to receive a SIB through the
• BCCH according to the MCCH configuration modification information.
• the UTRAN broadcasts MCCH configuration information using a SIB
• the MCCH configuration information includes parameters for reconfiguration of the MCCH. Further, the parameters may include
• MCCH repetition period a length of an access period
• a channelization code for example,
• the parameters may comprise a start time of the MCCH
• the start time may be represented as at least one of a SFN, a CFN,
• the UE may determine the MCCH configuration information includes the start time
• the reference time corresponds to at least one of the SFN, the CFN, the start time
• configuration information includes the start time of the MCCH reconfiguration, the UE
• the MCCH reconfiguration time may recognize the MCCH reconfiguration time. Meanwhile, the start time of the MCCH
• reconfiguration may be transmitted through the MCCH instead of the BCCH, or be
• the UE receives the MCCH configuration information, and reconfigure the
• the UE receives MCCH information through the
• FIG. 6 is a flow chart illustrating a process for reconfiguring a common
• the MCCH is taken as an example of a common channel, but the method of FIG 6. is applicable to other common
• a UTRAN transmits MCCH configuration
• the MCCH configuration modification information may
• the MCCH configuration modification information is transmitted using the
• MSI through the MCCH includes all or part of parameters which are
• the parameters may include at least one
• a channelization code for example, OVSF
• SF size of data block
• the parameters may comprise a start time of the MCCH
• the start time may be detected by at least one of a SFN, a CFN, a
• the UE may determine the start time using at least one of the SFN,
• the UE may recognize the time of the MCCH reconfiguration. Meanwhile,
• the start time of the MCCH reconfiguration may be transmitted through the MCCH instead
• the UE receives the MCCH configuration information, and reconfigure the
• the UE receives MCCH information through the
• FIG. 7 is a diagram illustrating the MCCH reconfiguration time. As shown
• the UTRAN transmits the MCCH configuration modification
• the UE may
• FIG. 8 is a flow chart illustrating MCCH reconfiguration process in a UE.
• the UE receives a MSI message in every modification period S81. And, the UE examines
• the UE determines whether the UE is to receive a SIB through the BCCH
• the UE reconfigures the MCCH using the information
• the MCCH configuration modification information may indicates a specific
• SIB which the UE is to receive.
• the UE reconfigures the MCCH using the MCCH configuration
• FIG. 9 is a structural diagram illustrating a UE according to the present
• the UE comprises an antenna unit 91, a radio frequency
• the signal processing unit 93 includes a signal processing unit 93 and a signal processing unit 93.
• the signal processing unit 93 includes a signal processing unit 93 and a signal processing unit 93.
• a procession unit such as a micro process or a digital signal processor.
• UE may also comprise a display unit 95, a key pad unit 96 and speaker unit 97.
• the UE receives signals through the MCCH and the BCCH using the
• the signal processing unit 93 reconfigures the MCCH
• the present invention is applicable to a personal digital assistant and a
• manufacture refers to code or logic implemented in hardware logic (e.g., an
• ASIC Integrated Circuit
• computer readable medium e.g., magnetic storage
• volatile and non-volatile memory devices e.g., EEPROMs, ROMs, PROMs,
• RAMs volatile and re-volatile memory
• DRAMs dynamic random access memory
• SRAMs static random access memory
• firmware programmable logic, etc.
• the present invention may be applied to a base station
• the present invention can be applied to a mobile communication system.

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• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Signal Processing (AREA)
• Computer Security & Cryptography (AREA)
• Multimedia (AREA)
• Mobile Radio Communication Systems (AREA)
• Logic Circuits (AREA)

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Publications (2)

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Cited By (28)

Families Citing this family (17)

Citations (2)

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• 2005
  • 2005-03-28 KR KR1020050025643A patent/KR101084131B1/ko not_active Expired - Fee Related
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