[go: up one dir, main page]

WO2007139320A2 - Procédé destiné à construire une carte d'attribution de ressources destinée à un système de communication mobile - Google Patents

Procédé destiné à construire une carte d'attribution de ressources destinée à un système de communication mobile Download PDF

Info

Publication number
WO2007139320A2
WO2007139320A2 PCT/KR2007/002552 KR2007002552W WO2007139320A2 WO 2007139320 A2 WO2007139320 A2 WO 2007139320A2 KR 2007002552 W KR2007002552 W KR 2007002552W WO 2007139320 A2 WO2007139320 A2 WO 2007139320A2
Authority
WO
WIPO (PCT)
Prior art keywords
map
resource
sub
allocated
localized
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2007/002552
Other languages
English (en)
Other versions
WO2007139320A3 (fr
Inventor
Kwang-Jae Lim
Chul-Sik Yoon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electronics and Telecommunications Research Institute ETRI
Samsung Electronics Co Ltd
Original Assignee
Electronics and Telecommunications Research Institute ETRI
Samsung Electronics Co Ltd
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 KR1020060097021A external-priority patent/KR101284836B1/ko
Application filed by Electronics and Telecommunications Research Institute ETRI, Samsung Electronics Co Ltd filed Critical Electronics and Telecommunications Research Institute ETRI
Priority to US12/301,972 priority Critical patent/US8331398B2/en
Publication of WO2007139320A2 publication Critical patent/WO2007139320A2/fr
Publication of WO2007139320A3 publication Critical patent/WO2007139320A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support

Definitions

  • the present invention relates to a method of constructing a resource allocation map for a mobile communication system. More particularly, the present invention relates to a method of constructing a resource allocation map for an OFDMA mobile communication system in a case where a localized resource block (localized RB) and a distributed resource block (distributed RB) need to be simultaneously allocated in regards to a radio resource allocated in a previous frame or reserved with a fixed allocation.
  • a localized resource block localized RB
  • distributed resource block distributed resource block
  • OFDM orthogonal sub-carrier
  • a transmission terminal maintains orthogonality between carriers by using a simple method, such as guard interval insertion.
  • a complicated equalizer or a rake receiver in a DS_CDMA (direct sequence-code division multiple access) method becomes unnecessary in a reception terminal.
  • an orthogonal frequency division multiple access (hereinafter, referred to as "OFDMA") method has excellent characteristics
  • the OFDMA method has been adopted as a standard modulation method in digital broadcasting, a wireless LAN such as IEEE 802.11a or HIPERLAN, and a fixed broadband wireless access such as IEEE 802.16.
  • the OFDMA method has been examined as one of applicable technologies of a modulation and demodulation/multiple access method even in a UMTS (universal mobile telecommunications system).
  • UMTS universal mobile telecommunications system
  • OFDM-based multiple access methods are actively being researched. Among them, the OFDMA method has been examined and researched as a candidate technology for achieving next generation mobile communication in which a user request for high-speed multimedia services or the like is rapidly increasing.
  • the OFDMA method is a two-dimensional access method that couples a time division access technology and a frequency division access technology.
  • FIG. 1 is a diagram illustrating a structure of a data frame in an OFDM/OFDMA wireless communication system according to the prior art.
  • the horizontal axis indicates a time axis that is displayed in a unit of a symbol
  • a vertical axis indicates a frequency axis that is displayed in a unit of a sub-channel.
  • the sub-channel means collection of a plurality of sub-carriers. Specifically, in an OFDMA physical layer, active sub-carriers are divided into groups, and each sub-carrier group is transmitted to a different reception terminal. A sub-carrier group that is transmitted to one reception terminal is referred to as a sub-channel.
  • the sub-carriers that form each sub-channel may be adjacent to one another or spaced apart from one another at equivalent intervals.
  • a distributed sub-channel that is composed of distributed sub-carriers is referred to as a distributed resource block (hereinafter referred to as "distributed RB")
  • a localized sub-channel that is composed of neighboring sub-carriers is referred to as a localized resource block (hereinafter referred to as "localized RB”). That is, when sub-carriers that belong to a resource block (hereinafter referred to as "RB”) are distributed on a frequency axis, the corresponding RB is referred to as a distributed RB 1 and when the sub-carriers are adjacent to one another, the corresponding RB is referred to as a localized RB.
  • the RB is a minimal radio resource unit that divides a radio resource used when transmitting downlink data and uplink data, and each RB is composed of a plurality of sub-carriers on a frequency axis and one or more symbols on a time axis.
  • a specific band has a high channel gain on a frequency axis, while another band has a low channel gain. That is, the movement radio channel has a frequency selective fading characteristic.
  • the terminal selects a specific band that has a relatively large channel gain and informs a base station of the selected band, and the base station is allowed to transmit data in a transmission method where a data rate is high in the corresponding specific band, thereby obtaining a frequency selective scheduling gain.
  • the base station allocates the radio resource to the corresponding terminal by using the localized RB.
  • the base station allocates the distributed RB composed of sub-carriers distributed from the side of the frequency to a mobile terminal.
  • the base station uses a map to inform each mobile terminal of information for the radio resource allocated in the above-described manner. That is, in order to inform each mobile terminal of the information for the radio resource allocated to each mobile terminal, the base station constructs the map including information for an ID corresponding to a mobile terminal to which the radio resource is allocated, a location of the allocated radio resource, and a transmission method to be used in the allocated radio resource.
  • the map may be transmitted in a state where a different modulation and coding scheme is applied to the map.
  • radio resource allocation information is transmitted through sub-maps having different modulation and coding schemes.
  • a main map includes information for the location of the radio resource used when transmitting each sub-map and information for the used modulation and coding scheme, and each sub-map includes radio resource allocation information for the mobile terminal.
  • the main map is referred to as a mother map
  • the sub-map is referred to as a child map.
  • the radio resource used for transmitting the map a radio resource is notified through a broadcasting channel, or a generally known fixed radio resource is allocated.
  • FIG. 2 shows a method of allocating a radio resource composed of twenty-four localized RBs to three mobile terminals. According to this method, the base station informs each terminal of radio resource allocation information by using a bit-map method.
  • a frequency bandwidth that has a high channel gain with respect to each mobile terminal according to a frequency selective channel characteristic of each mobile terminal may be focused on an arbitrary portion in an entire band or distributed partially in the entire band.
  • a bit-map that can inform the locations of allocated RBs is used. As shown in FIG. 2, when the bit-map method is used, the number of bits needed when transmitting information of a radio resource allocated to each terminal is needed by the number of RBs in the entire radio resource, for example, 24 bits when the entire radio resource is composed of twenty-four RBs.
  • a corresponding bit is set to 1
  • a corresponding bit is set to 0.
  • the second and fourteenth bits become 1
  • the other bits become 0.
  • the order of bit columns of the bit map allocated to individual terminals is the same as the order of RBs. That is, the bit that represents the first RB becomes the first bit of the bit column.
  • Equation 1 represents the number of bits needed for allocation information included in the map in order to allocate the radio resource to M mobile terminals in the bit-map method.
  • reference character XBITMAP indicates the number of bits needed for allocation information
  • reference character M indicates the number of mobile terminals allocated
  • D indicates bit lengths of IDs for discriminating mobile terminals
  • reference character NRB indicates the number of RBs
  • reference character l_ ⁇ indicates a bit length of a field to inform a transmission method.
  • Equation 1 in order to represent the resource allocation information, in each mobile terminal, bits corresponding to the total number of RBs, bits for representing an ID of a mobile terminal, and bits for representing a transmission method are necessary. Therefore, as described above, the resource allocation method that uses the bit-map needs a large amount of bits.
  • FIG. 3 shows a method of allocating a radio resource composed of twenty-four distributed RBs to three mobile terminals.
  • a base station informs each terminal of radio resource allocation information by using a run-length method.
  • the radio resource can be sequentially allocated to each terminal by using the distributed RBs in a run-length method.
  • the run-length method by using a size of the radio resource, the location of the radio resource allocated to each mobile terminal can be informed.
  • the terminal #1 recognizes that the terminal #1 is first allocated with the radio resource, that is, four RBs, the terminal #1 can know the location of the radio resource that is allocated to the terminal #1. Further, in the case of the terminal #2, if the terminal #2 knows that the number of RBs allocated to the terminal #2 is five and the four RBs are allocated to the terminal #1 , the terminal #2 can know that the radio resource allocated to the terminal #2 corresponds to five RBs from 5 to 9.
  • the terminal #3 if the terminal #3 can know the number of RBs allocated to the terminal #3 and the number of accumulated RBs of the radio resource allocated to the first and second terminals allocated with the radio resource prior to the terminal #3, the terminal #3 can know a starting point and an ending point of the radio resource that is allocated to the terminal #3.
  • Equation 2 represents the number of bits needed when informing each mobile terminal of radio resource allocation information in the case where the run-length method is used.
  • [X] indicates a minimal positive number that is equal to or larger than X
  • reference character XRunieng th indicates the number of bits needed for allocation information
  • reference character M indicates the number of mobile terminals allocated
  • reference character LID indicates bit lengths of IDs for discriminating mobile terminals
  • reference character NRB indicates the number of RBs
  • reference character LT* indicates a bit length of a field to inform a transmission method.
  • each mobile terminal needs to accurately know a size of the radio resource allocated to all of the mobile terminals allocated with the radio resource prior to each mobile terminal so as to calculate the location of the radio resource allocated to each terminal.
  • all signals are not completely received. For this reason, when a previously allocated resource allocation message is not received or an error occurs at the time of receiving the resource allocation message, each terminal may mis-recognize the location of the radio resource allocated to each terminal. Accordingly, each mobile terminal does not receive a packet transmitted to each terminal through a downlink, and transmits a packet to an erroneous uplink wireless band.
  • each mobile terminal that confirms information for a radio resource allocated to each mobile terminal in a map of a current frame needs to accurately know all RBs that are allocated in the previous frame as well as a current frame and are valid until the current frame.
  • the previous allocated RBs cannot be discriminated by using the run-length information included in the map of the current frame, which does not accurately know the locations of the RBs allocated in the current frame.
  • each mobile terminal needs to accurately know not only the distributed RBs allocated to the other mobile terminals but also the locations of the localized RBs so as to know the locations of the RBs allocated to each mobile terminal. Furthermore, when using a plurality of sub-maps using different modulation and coding schemes in order to transmit allocation information, each mobile terminal needs to accurately receive not only a sub-map including allocation information corresponding to each mobile terminal but also other sub-maps including allocation information corresponding to the other terminals. However, in the case where an error occurs when each mobile terminal receives other sub-maps, each mobile terminal cannot accurately know the location of the radio resource that is allocated to each mobile terminal.
  • each terminal needs to know a radio resource allocated to each mobile terminal by using a bit-map method or a start-length method regardless of allocations for the other mobile terminals.
  • FIG. 4 shows the resource allocation using the bit-map method in the case where the localized RB and the distributed RB are simultaneously allocated and a specific RB is used in a state where the specific PB is reserved until a current frame from a previous frame.
  • the first, sixth, eighth, and thirteenth RBs are reserved in the previous frame, and the second, third, fifth, ninth, fourteenth, fifteenth, and seventeenth RBs indicate the localized RBs.
  • the other RBs are allocated and used as the distributed RBs. As shown in FIG.
  • the bit-map method is used with respect to the distributed RBs.
  • bit columns each having a length corresponding to the number of RBs in the entire radio resource are needed by the number of mobile terminals, and thus the size of the map for representing the allocation information is increased.
  • FIG. 5 shows a case where a bit-map method is used for localized RBs and a start-length method is used for distributed RBs in the allocation of the radio resource having the same RB structure as FIG. 4.
  • the start-length method is a method in which a starting location of the radio resource allocated to each terminal and the number of allocated RBs are included in the map.
  • the number of bits required is decreased, as compared with the bit-map method shown in FIG. 4.
  • the RBs need to be informed of the independent start-length. Therefore, the number of start lengths is needed by the number of distributed RBs, and thus the size of the map is increased.
  • the present invention has been made in an effort to provide a method of constructing a resource allocation map for a mobile communication system, having advantages of informing corresponding radio resource allocation information to each mobile terminal regardless of whether a map in a previous frame or a map in a current frame is received, in a case where a localized resource block (localized RB) and a distributed resource block (distributed RB) need to be simultaneously allocated in regards to a radio resource allocated in a previous frame or reserved with a fixed allocation.
  • localized resource block localized RB
  • distributed resource block distributed resource block
  • An exemplary embodiment of the present invention provides a method of constructing a resource allocation map in a case where a base station allocates a radio resource to a plurality of mobile terminals by using a localized resource block in a mobile communication system, the localized resource block being a localized sub-channel composed of neighboring sub-carriers.
  • the method includes including a mobile terminal identifier column in the resource allocation map, where identifiers of the mobile terminals are continuously displayed, setting an index for each mobile terminal according to an order in which the mobile terminal identifiers are displayed, and allocating an index of a mobile terminal corresponding to each of resource blocks of the radio resource for each resource block, the resource block being a unit of a minimal radio resource found by dividing a radio resource used when data is transmitted, and including an index bit pattern in the resource allocation map where indexes allocated for the individual resource blocks are arranged according to an order of the resource blocks included in the radio resource.
  • Another embodiment of the present invention provides a method of constructing a resource allocation map in a case where a base station allocates a radio resource to a plurality of mobile terminals by using a distributed resource block in a mobile communication system, the distributed resource block being a distributed sub-channel composed of distributed sub-carriers.
  • the method includes including a mobile terminal identifier column in the resource allocation map where identifiers of the mobile terminals are continuously displayed according to an order in which the radio resource is allocated to the mobile terminals, setting a toggle bit to each mobile terminal according to an order in which the mobile terminal identifiers are displayed, and allocating a toggle bit of a mobile terminal corresponding to a resource block of the radio resource for each resource block, the resource block being a unit of a minimal radio resource found by dividing a radio resource used when data is transmitted, and including a toggle bit pattern in the resource allocation map where the toggle bits allocated for the individual resource blocks are arranged according to the order of the resource blocks included in the radio resource.
  • Still another embodiment of the present invention provides a method of constructing a resource allocation map in a case where a base station in a mobile communication system allocates a radio resource to a plurality of mobile terminals, the radio resource including resource blocks having an allocation period of one frame or more in a map of a previous frame or being reserved with a fixed allocation, the resource block being a unit of a minimal radio resource found by dividing a radio resource used when data is transmitted.
  • the method includes constructing a bit column including classification information corresponding to a resource block allocated in a current frame among the entire radio resource and including the bit column in the resource allocation map, and including a localized resource block bit pattern in the resource allocation map, including classification information of a localized resource block and a distributed resource block included in the resource block included in the resource block allocated in the current frame.
  • Yet still another embodiment of the present invention provides a method of constructing a resource allocation map in a case where a base station in a mobile communication system allocates a radio resource by using sub-maps and a main map, the sub-maps including radio resource allocation information for mobile terminals, the main map including information for a location of the radio resource used for transmission of the sub-maps and a modulation and coding scheme.
  • the method includes constructing a bit column including classification information corresponding to a resource block allocated in a current frame in the entire radio resource, the resource block being a unit of a minimal radio resource found by dividing a radio resource used when data is transmitted, and including the bit column in the man map, including a localized resource block bit pattern in the main map, including classification information of a localized resource block corresponding to the resource block allocated in the current frame and a distributed resource block, and including sub-map usage information corresponding to whether the sub-maps are used in the main map, and classifying, when the sub-maps are used, a sub-map localized resource block and a sub-map distributed resource block for each sub-map.
  • FIG. 1 is a diagram illustrating a data frame of an OFDMA mobile communication system.
  • FIG. 2 is a diagram illustrating a method of constructing a resource allocation map in a bit-map method for a localized radio resource according to the prior art.
  • FIG. 3 is a diagram illustrating a method of constructing a resource allocation map in a run-length method for a distributed radio resource according to the prior art.
  • FIG. 4 is a diagram illustrating a method of constructing a resource allocation map in a bit-map method in a case where a localized radio resource and a distributed radio resource according to the prior art are mixed.
  • FIG. 5 is a diagram illustrating a method of constructing a resource allocation map in a bit-map method and a start-length method in a case where a localized radio resource and a distributed radio resource according to the prior art are mixed.
  • FIG. 6 is a flowchart illustrating a method of constructing a resource allocation map in an index pattern method for a localized radio resource according to a first exemplary embodiment of the present invention.
  • FIG. 7 is a diagram illustrating an example of constructing a resource allocation map in an index pattern method for a localized radio resource according to a first exemplary embodiment of the present invention.
  • FIG. 8 is a diagram illustrating an example of a resource allocation map that is constructed in an index pattern method for a localized radio resource according to a first exemplary embodiment of the present invention.
  • FIG. 9 is a flowchart illustrating a method of constructing a resource allocation map in a toggle pattern method for a distributed radio resource according to a second exemplary embodiment of the present invention.
  • FIG. 10 is a diagram illustrating an example of constructing a resource allocation map in a toggle pattern method for a distributed radio resource according to a second exemplary embodiment of the present invention.
  • FIG. 11 is a diagram illustrating an example of a resource allocation map that is constructed in a toggle pattern method for a distributed radio resource according to a second exemplary embodiment of the present invention.
  • FIG. 12 is a flowchart illustrating a method of constructing a resource allocation map in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a third exemplary embodiment of the present invention are mixed.
  • FIG. 13 is a diagram illustrating an example of new RB bit pattern and localized RB bit pattern among the resource allocation map in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a third exemplary embodiment of the present invention are mixed.
  • FIG. 14 is a diagram illustrating an example of index bit pattern and toggle bit pattern among the resource allocation map in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a third exemplary embodiment of the present invention are mixed.
  • FIG. 15 is a diagram illustrating an example of a resource allocation map that is constructed in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a third exemplary embodiment of the present invention are mixed.
  • FIG. 16 is a flowchart illustrating a method of constructing a mother map in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a fourth exemplary embodiment of the present invention are mixed.
  • FIG. 17 is a diagram illustrating an example of a mother map that is constructed in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a fourth exemplary embodiment of the present invention are mixed.
  • FIG. 18 is a diagram illustrating another example of a mother map that is constructed in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a fourth exemplary embodiment of the present invention are mixed.
  • FIG. 19 is a diagram illustrating another example of a mother map that is constructed in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a fourth exemplary embodiment of the present invention are mixed.
  • FIG. 20 is a flowchart illustrating a method of constructing a child map in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a fourth exemplary embodiment of the present invention are mixed.
  • FIG. 21 is a diagram illustrating an example of a child map that is constructed in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a fourth exemplary embodiment of the present invention are mixed.
  • FIG. 22 is a diagram illustrating an example of mother MAP among the resource allocation map in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a fourth exemplary embodiment of the present invention are mixed.
  • FIG. 23 is a diagram illustrating an example of child MAP among the resource allocation map in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a fourth exemplary embodiment of the present invention are mixed.
  • FIG. 24 is a diagram illustrating an example of a resource allocation map that is constructed in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a fourth exemplary embodiment of the present invention are mixed.
  • FIG. 25 is a flowchart illustrating a method of constructing a child map in a hierarchical pattern method and a start-length method in a case where a localized radio resource and a distributed radio resource according to a fifth exemplary embodiment of the present invention are mixed.
  • FIG. 26 is a diagram illustrating an example of a child map that is constructed in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a fifth exemplary embodiment of the present invention are mixed.
  • FIG. 27 is a diagram illustrating an example of constructing a resource allocation map in a hierarchical pattern method and a start-length method in a case where a localized radio resource and a distributed radio resource according to a fifth exemplary embodiment of the present invention are mixed.
  • FIG. 28 is a diagram illustrating an example of a resource allocation map that is constructed in a hierarchical pattern method and a start-length method in a case where a localized radio resource and a distributed radio resource according to a fifth exemplary embodiment of the present invention are mixed.
  • FIG. 6 is a flowchart illustrating a method of constructing a resource allocation map in an index pattern method for a localized radio resource according to a first exemplary embodiment of the present invention.
  • a base station locates the number of mobile terminals to which radio resources are allocated and an index identifier (ID) column where IDs of the corresponding mobile terminals are sequentially displayed to a map (Steps S10 and S11).
  • ID index identifier
  • an ID of each of the mobile terminals has a bit length in a range of 8 to 16 bits according to an advance agreement between the base station and the mobile terminal.
  • the base station before allocating an index for each terminal, the base station performs a process of determining lengths of indexes according to the number of mobile terminals to which a radio resource is allocated.
  • the base station may use index lengths that are determined according to the advance agreement between the base station and the terminals, or may determine and use index lengths adaptively for the number of mobile terminals without wasting bits. At this time, the number of bits
  • Li NDE x flog 2(M)] according to the number M of mobile terminals in the case of not
  • the base station allocates an index to each mobile terminal as follows (Step S12).
  • the indexes that are allocated to the mobile terminals are determined according to the order in which IDs of the mobile terminals are displayed.
  • the base station shares a method of determining an index according to the advance agreement between the base station and the mobile terminals with the mobile terminals.
  • each mobile terminal can estimate an index allocated to each mobile terminal according to the order in which the IDs of the mobile terminals are displayed.
  • the base station uses one specific index in order to represent an RB not being allocated to all the mobile terminals in addition to an index allocated to each mobile terminal.
  • the base station uses an index 0 to represent an RB that is not allocated to all the mobile terminals.
  • the present invention is not limited thereto. It is possible to change an index that corresponds to an RB that is not allocated according to the advance agreement between the base station and the mobile terminals.
  • the base station constructs resource allocation information in an index bit pattern that is constructed by arranging indexes corresponding to terminals that are allocated with RBs according to an order of the RBs in the entire radio resource (Step S13).
  • the index bit pattern that is constructed in the above-described method is included in the map (Step S14) and is transmitted to each mobile terminal.
  • the total number of indexes used to represent radio resource allocation information is the same as the number of RBs that construct the entire radio resource.
  • Equation 3 represents the number of bits Xin d ex of a map allocated to represent localized RB allocation information by using an index pattern method.
  • reference character M indicates the number of mobile terminals allocated
  • reference character LID indicates bit lengths of IDs for discriminating mobile terminals
  • reference character NRB indicates the number of RBs
  • reference character l_ ⁇ indicates a bit length of a field that informs a transmission method.
  • FIG. 7 is a diagram illustrating a method of constructing a map in a case where a radio resource composed of twenty-four RBs according to a first exemplary embodiment of the present invention is allocated to three terminals using localized
  • the number of mobile terminals to which radio resources are allocated is three, and therefore the number of bits needed for each index is two.
  • the base station sequentially arranges IDs of a terminal #1 , a terminal #2, and a terminal #3, and includes the IDs in the map.
  • the base station allocates an index 01 to the terminal #1 , an index 10 to the terminal #2, and an index 11 to the terminal #3 according to the arrangement order of the IDs.
  • the base station allocates an index 00 to a radio resource that is not allocated to any of the mobile terminals.
  • the RBs allocated to the terminal #1 correspond to the second and fourteenth RBs, and thus 01 is allocated to the second and fourteenth indexes.
  • the RBs allocated to the terminal #2 correspond to the third and fifteenth RBs, 10 is allocated to the third and fifteenth indexes.
  • the RBs allocated to the terminal #3 correspond to the fifth, ninth, and seventeenth RBs, 11 is allocated to the fifth, ninth, and seventeenth indexes.
  • 00 is allocated to the indexes corresponding to RBs that are not allocated to any of the mobile terminals.
  • an index bit pattern having the total length of 48 bits such as 00 01 10 00 11 00 00 00 11 00 00 00 00 01 10 00 11 00 00 00 00 00 00 00 00 is formed.
  • the length of bits is smaller than the length of 72 bits needed to represent allocation information for a radio resource composed of twenty-four RBs to the three mobile terminals in a bit-map method.
  • FIG. 8 shows a portion of a resource allocation map that includes an index bit pattern shown in FIG. 7.
  • the map includes information indicating the number of terminals to which the radio resources are allocated.
  • the mobile terminal uses the information included in the map when the mobile terminal recognizes a region occupied by a terminal ID in the map and an index length.
  • constituent elements such as a field for informing a transmission method, are additionally needed in order to construct the map, the description thereof will be omitted because a person of ordinary skill in the art can easily embody an exemplary embodiment of the present invention.
  • a base station constructs resource allocation information in a toggle bit pattern in a mobile communication system according to a second exemplary embodiment of the present invention.
  • FIG. 9 is a flowchart illustrating a method of constructing a resource allocation map in a toggle pattern method for a distributed radio resource according to a second exemplary embodiment of the present invention.
  • a base station locates the number of mobile terminals to which radio resources are allocated and an identifier (ID) column where IDs of the corresponding mobile terminals are sequentially displayed to a map (Steps S20 and S21).
  • the base station allocates toggle bits corresponding to the mobile terminals to which the radio resources are allocated (Step S22).
  • toggle bit information that is allocated to the mobile terminals is not included in the map.
  • the reason why the toggle bit information is not included in the map is as follows. That is, since the base station and the mobile terminals share a method of determining a toggle bit according to the advance agreement between the base station and the mobile terminals, even when the toggle bit information allocated to the mobile terminals is not included in the map, each mobile terminal can estimate a toggle bit that is allocated to each mobile terminal according to the order in which the IDs of the mobile terminals are displayed.
  • the toggle bits allocated to the mobile terminals are determined according to the order in which the IDs of the mobile terminals are displayed, that is, the order of the mobile terminals to which the radio resources are allocated, as described above.
  • the toggle bit of the mobile terminal whose ID is first displayed starts from 1 (or 0), and the following mobile terminals use toggle bits obtained by toggling the toggle bits that are allocated to the mobile terminals prior to each terminal. That is, if the toggle bit allocated to the previous terminal is 1 , the toggle bit 0 is used, and if the toggle bit allocated to the previous terminal is 0, the toggle bit 1 is used.
  • the toggle bit is toggled such that terminal allocation regions can be discriminated.
  • the base station uses a toggle bit to represent information for the corresponding radio resource.
  • the base station uses a toggle bit obtained by toggling the toggle bit allocated to the first terminal.
  • a toggle bit that is obtained by toggling the toggle bit of the mobile terminal that is allocated with the radio resource directly before is used.
  • the base station constructs a toggle bit pattern column obtained by arranging the toggle bits corresponding to the RBs according the order of the RBs (Step S23), and includes the toggle bit pattern in the map (Step S24).
  • the total number of bits of the toggle bit pattern needed for representing allocation information for all the radio resources is the same as the number of RBs included in the entire radio resource.
  • Equation 4 represents the number of bits XTOGGLE of the map that includes distributed RB allocation information represented in a toggle pattern method, as described above.
  • X ⁇ oggle M(L
  • reference character M indicates the number of mobile terminals allocated
  • D indicates bit lengths of IDs for discriminating mobile terminals
  • reference character NRB indicates the number of RBs
  • reference character l_ ⁇ indicates the length of bits of a field that informs the number of mobile terminals allocated, a transmission method, and the like.
  • the number of bits of the map required by the toggle pattern method is smaller than the number of bits of the map required by the run-length method.
  • FIG. 10 shows an example of constructing a resource allocation map of a toggle pattern method for a distributed radio resource according to a second exemplary embodiment of the present invention, which specifically shows a method of constructing a map in a case where a radio resource composed of twenty-four RBs is allocated to three mobile terminals by using distributed RBs.
  • three mobile terminals are allocated with a radio resource in the order of a terminal #1 , a terminal #2, and a terminal #3, and therefore user IDs (mobile terminal identifiers) are arranged in the order of the terminal #1 , the terminal #2, and the terminal #3.
  • the terminal #1 is allocated with a toggle bit 1
  • the terminal #2 is allocated with the toggle bit 0
  • the terminal #3 is allocated with the toggle bit 1.
  • a toggle bit 0 is allocated to the radio resource that exists in front of the radio resource allocated to the terminal # 1 and is not allocated, and a toggle bit 0 is allocated to a radio resource that exists in the back of the radio resource allocated to the terminal #3 and is not allocated.
  • resource allocation regions are discriminated.
  • RBs that are not allocated do not exist at the front side of the radio resource, a toggle bit for each RB starts from a toggle bit corresponding to the terminal #1 that is first allocated with the radio resource. Then, since the first to fourth RBs are allocated to the terminal #1 , resource allocation information is represented in a toggle bit pattern of 1111 for the four RBs.
  • a toggle bit pattern for the five RBs is represented as 00000.
  • resource allocation information is represented in a toggle bit pattern of 11
  • resource allocation information is represented in a toggle bit pattern of 0000000000000 for twelfth to twenty-fourth RBs that are not allocated to all of the terminals.
  • the toggle bit pattern column 111100000110000000000000 that is constructed in the above-described method is included in the map, and is transmitted to the mobile terminals to inform resource allocation information.
  • FIG. 11 shows a portion of a map that is constructed including a toggle bit pattern constructed in FIG. 10.
  • the map includes information indicating the number of terminals to which the radio resource is allocated. This information is used when the mobile terminal recognizes a region occupied by a terminal ID in the map and calculates a toggle bit.
  • constituent elements such as a field for informing a transmission method, are additionally needed in order to construct the map, the description thereof will be omitted because a person of ordinary skill in the art can easily embody an exemplary embodiment of the present invention.
  • a base station constructs resource allocation information in a hierarchical pattern method in a mobile communication system according to a third exemplary embodiment of the present invention.
  • FIG. 12 is a flowchart illustrating a method of constructing a resource allocation map in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a third exemplary embodiment of the present invention are mixed.
  • the base station when representing radio resource information in a hierarchical pattern method, first, the base station constructs a new RB bit pattern (new RB bit pattern) composed of classification information using an old RB and a new RB by using a bit-map method for the entire radio resource (Step S30). At this time, the length of the constructed New RB bit pattern is the same as the number of all RBs in the radio resource.
  • the term "old RB” means a radio resource RB that is allocated until the current frame from the previous frame or reserved with fixed allocation
  • the term "new RB” means an RB that is newly allocated in the current frame.
  • a bit pattern is constructed with bits in which 1 is allocated to a new RB and 0 is allocated to an old RB.
  • the length of the new RB bit pattern that is constructed in the above-described method is the same as the number of RBs that construct the entire radio resource.
  • 0 may be allocated to the new RB
  • 1 may be allocated to the old RB.
  • the base station collects new RBs after constructing the new RB bit pattern, classifies the new RBs into localized RBs and distributed RBs, and constructs the localized RB bit pattern in the bit-map method (Step S31).
  • a bit pattern is constructed with bits in which 1 is allocated to a new RB when the new RB is a localized RB and 0 is allocated to a new RB when the new RB is a distributed RB.
  • the length of the localized RB bit pattern that is constructed in the above-described method is the same as the number of new RBs.
  • the method may be changed such that 0 may be allocated to the localized RB, and 1 may be allocated to the distributed RB.
  • the base station constructs resource allocation information for each localized RB and each distributed RB.
  • the base station constructs mobile terminal allocation information for a localized RB as an index bit pattern by using an index pattern method (Step S33).
  • the number of terminals that are allocated with the radio resource, IDs of the terminals, and the like are included in the map by using the localized RBs, and a method of constructing the map is the same as that in the above-described first exemplary embodiment. Therefore, the detailed description will be omitted.
  • the indexes are allocated to the localized RBs in the new RBs, and thus the index pattern is constructed. Therefore, the
  • the mobile terminal allocation information for the distributed RB is constructed in the toggle bit pattern by using the toggle pattern method (Step S35).
  • the number of terminals allocated with the radio resource, IDs of the terminals, and the like are included in the map, and the method of constructing the map is the same as that in the above-described second exemplary embodiment. Accordingly, the detailed description will be omitted.
  • the toggle bits are allocated to the distributed RBs in the new RBs.
  • the length of the toggle bit pattern corresponds to the number of distributed RBs.
  • FIG. 13 and FIG. 14 show an example of constructing a resource allocation map in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a third exemplary embodiment of the present invention are mixed, which shows a construction of resource allocation information in a case where a resource is allocated to six terminals by simultaneously using localized RBs and distributed RBs with respect to a radio resource including old RBs.
  • FIG. 13 shows new RB bit pattern and Localized RB bit pattern
  • FIG. 14 shows Index bit pattern about localized RBs and toggle bit pattern about distributed RBs.
  • the base station constructs a new RB bit pattern in such a manner that when each RB is an old RB, a bit 0 is allocated to each RB, and when each RB is a new RB, a bit 1 is allocated to each RB. Since the first, sixth, eighth, thirteenth, twenty-third, and twenty-fourth RBs are old RBs, the entire new RB bit pattern is constructed with a bit column 011110101111011111111100 that is composed of twenty-four bits and has bits of the same number as the total number of RBs, and is included in the map.
  • the base station includes in the map, the localized RB bit pattern 110101000110100000 having 18 bits in which when each new RB is a distributed RB, the bit 0 is allocated to each new RB, and when each new RB is a localized RB, the bit 1 is allocated to each new RB. Then, the base station represents the allocation information for the classified localized RBs in an index pattern method.
  • the terminal #1 is allocated with the index 01
  • the terminal #2 is allocated with the index 10
  • the terminal #3 is allocated with the index 11.
  • the radio resource that is not allocated to any of the terminals is allocated with the index 00.
  • the index bit pattern that is constructed in the above-described method is composed of 14 bits in total because the total number of localized RBs is 7 and the length of the index is 2. Specifically, the index bit pattern becomes 01101111011011. Then, the base station displays allocation information for the classified distributed RB in the toggle pattern method. As shown in FIG.
  • the mobile terminals that are allocated with the distributed RBs correspond to the terminal #4, the terminal #5, and terminal #6.
  • the toggle bit pattern is constructed by using the allocated toggle bits, the toggle bit pattern becomes 11110000011. Since the total number of distributed RBs is 11 , the toggle bit pattern is composed of 11 bits.
  • FIG. 15 shows a portion of a map that includes a new RB bit pattern, a localized RB bit pattern, an index bit pattern, and a toggle bit pattern constructed in FIG. 13 and FIG. 14.
  • allocation information is displayed in an index pattern method for RBs corresponding to the localized RBs, and allocation information is displayed in the toggle bit pattern method for the distributed RB, so the allocation information for all the RBs can be displayed by using the smaller number of bits.
  • 67 bits are needed. Specifically, 24 bits are needed in order to discriminate the new RBs and the old RBs, 18 bits are needed in order to discriminate the localized RBs and the distributed RBs for the new RBs, 14 bits are needed in order to represent allocation information for the localized RB, and 11 bits are needed to represent the allocation information for the distributed RB. As shown in FIG. 4, it is possible to construct a map having a smaller size, as compared with the method in which resource allocation information for the terminals is represented by using the bit-map.
  • the old RB is allocated until the current frame from the previous frame, or only the radio resource RB reserved with the fixed allocation is included.
  • the present invention is not limited thereto. It may be changed to include the remaining RBs, except for the RBs that are actually allocated to the mobile terminals in the current frame according to the advance agreement between the base station and the mobile terminals.
  • the new RB bit pattern is changed to represent it. Further, the localized RB bit pattern is changed to be displayed for the RBs that are actually allocated to the mobile terminals in the current frame. This affects the process of constructing the index bit pattern for the localized RB. In the previous steps, when the localized RBs are discriminated, the localized RBs are discriminated except for the RBs that are not allocated. Therefore, even though the indexes are not allocated to the RBs that are not allocated, it is possible to implement the index bit pattern. Accordingly, as in FIG. 14, since the indexes do not need to be allocated to the RBs that are not allocated, the bit number for each index
  • the separate index bit pattern becomes unnecessary.
  • the old RBs include the remaining RBs except for the RBs that are allocated to the mobile terminals in the current frame, this affects the process of constructing the toggle bit pattern for the distributed RBs.
  • the distributed RBs are discriminated, the RBs are discriminated except for the RBs that are not allocated. Therefore, even though the toggle bits are not allocated to the RBs that are not allocated, it is possible to implement the toggle bit pattern.
  • the distributed RB allocation information for the corresponding terminal is included in the previously implemented localized RB bit pattern. Therefore, the separate toggle bit pattern becomes unnecessary.
  • the method of constructing the resource allocation information may be changed.
  • the overall process is the same as the method of constructing the resource allocation information in the above-described hierarchical pattern method. The detailed description thereof will be omitted.
  • a base station constructs a mother map and a child map including resource allocation information in a hierarchical pattern method.
  • FIG. 16 is a flowchart illustrating a method of constructing a mother map in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a fourth exemplary embodiment of the present invention are mixed, which illustrates a case where one main map (mother map) and a plurality of sub-maps (child maps) are constructed in order to apply different modulation, coding, and transmission power to a map.
  • mother map main map
  • sub-maps child maps
  • the mother map is transmitted by using a modulation and coding scheme having a low data rate such that all mobile terminals in a corresponding cell can receive the mother map.
  • the radio resource allocation for a mobile terminal whose channel environment is poor is made in the child map that is transmitted by a modulation/coding scheme having a low data rate.
  • This mobile terminal has deteriorated reception performance due to the poor channel environment.
  • the mobile terminal may not receive a different child map that is transmitted by a modulation/coding scheme having a high data rate. Accordingly, in the mother MAP/child MAP structure, it needs to be represented such that a location of an RB allocated in each child map can be independently known regardless of a resource allocation in a different child MAP.
  • a new RB bit pattern is displayed in the mother map.
  • the localized RB bit pattern is displayed (Steps S40 and 41). Since this has been described, the detailed description will be omitted.
  • the mother map the number of RBs used for transmission of each child map and applied modulation/coding/power are displayed. Since the child maps are sequentially allocated right after the mother map in a data frame, the location of the radio resource used for transmission of each child map can be known by displaying the length, as in the run-length method.
  • the base station classifies resource blocks for individual child maps, divides the resource blocks into localized RBs and classified RBs, and classifies the mobile terminals allocated with the corresponding resource blocks for each sub-map, such that they are used at the time of constructing the sub-map.
  • FIG. 17 is a diagram illustrating an example of a mother map that is constructed in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to the fourth exemplary embodiment of the present invention are mixed.
  • the mother map may have various fields that include an uplink power control and a response for an uplink HARQ transmission, in addition to the resource allocation information. These fields are displayed as fixed fields because it departs from the scope of the exemplary embodiment of the present invention.
  • the mother map includes a new RB bit pattern and a localized RB bit pattern. Therefore, all of the RBs of the corresponding frame are classified into a new RB, an old RB, a localized RB, and a distributed RB.
  • the current map can represent a resource allocation for a frame after the transmitted frame rather than the transmitted frame. In the case of the small number of allocations, the allocations can be informed in the mother map even when the child map is not used. It is informed whether the child map is used or not by using the sub-map usage flag (Child MAP flag).
  • the child map displays the modulation and coding scheme used for the child map and the size of the radio resource used for transmission of the child map.
  • the radio resource for the child map is sequentially allocated from the radio resource after the mother map.
  • the localized RB allocation and the distributed RB allocation are directly made in the mother map.
  • the RB is allocated to each terminal according to the method that is described in the above-described third exemplary embodiment.
  • FIG. 18 is a diagram illustrating an example of constructing a mother map in a case where a child map exists according to the above-described method of constructing a mother map
  • FIG. 19 is a diagram illustrating an example of constructing a mother map in a case where the child map is not used according to the above-described method of constructing the mother map.
  • FIG. 20 is a flowchart illustrating a method of constructing a child map in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a fourth exemplary embodiment of the present invention are mixed.
  • the child MAP according to the fourth exemplary embodiment of the present invention uses an index pattern method in order to allocate the localized RB to each mobile terminal, and uses a toggle pattern method in order to allocate the distributed RB to each mobile terminal.
  • a localized RB (sub-map localized resource block) bit pattern is needed for representing the localized RB allocated to the corresponding child map.
  • the child localized RB bit pattern is constructed to have the length that corresponds to the number of localized RBs classified in the mother map. 1 (or 0) is allocated for the localized RB allocated to the corresponding child map, and 0 (or 1) is allocated for the localized RB that is not allocated.
  • the localized RB that is allocated is classified (Step S61).
  • the resource is allocated to each mobile terminal by using an index pattern method on the basis of information for the allocated child localized RB (Step S62).
  • the index pattern method since an index is not allocated to a localized RB that is not allocated in each child map, the length of the indexes that correspond to the number M of the mobile terminals allocated with the child localized
  • the child localized RB bit pattern includes information for the localized RB that is not allocated in the corresponding child map.
  • an index is allocated to each mobile terminal that is allocated with the child localized RB. Therefore, since the method of constructing the sub-map index bit pattern for the child localized RB is the same as the method of constructing resource allocation information in an index pattern method for the localized RB in the above-described third exemplary embodiment, the detailed description thereof will be omitted.
  • the sub-map index bit pattern is excluded from the map constituent elements.
  • Step S63 when the distributed RB allocated to the child map exists (Step S63), referring to the method of constructing the resource allocation information for the distributed RB in the toggle pattern method, first, the length of the sub-map toggle bit pattern for displaying allocation information for the distributed RB for each child map corresponds to the number of distributed RBs that are classified in the mother map.
  • the toggle bit 0 (or 1) is allocated for the distributed RB that is used in the previous child map (previously allocated child map in a current frame), and for the distributed RB located after the allocated distributed RB, a resource allocation is performed by toggling the toggle bit that is allocated to the final distributed RB among the allocated distributed RBs. That is, when 1 is allocated to the final RB, 0 is allocated, and when 0 is allocated to the final RB, 1 is allocated (Step S65).
  • FIG. 21 is a diagram illustrating an example of constructing a child map that is constructed in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a fourth exemplary embodiment of the present invention are mixed.
  • each child map includes information of a localized RB allocation and a distributed RB allocation for mobile terminals.
  • each child map includes a MAC ID field for discriminating terminals allocated with a resource, a type field for discriminating an uplink allocation or downlink allocation and representing information related to a transmission method, such as information for use in a multiplex antenna, a HARQ field for representing information related to HARQ, a TF field for representing a modulation and coding scheme used at the time of transmission, or the like.
  • a MAC ID field for discriminating terminals allocated with a resource
  • a type field for discriminating an uplink allocation or downlink allocation and representing information related to a transmission method, such as information for use in a multiplex antenna
  • HARQ field for representing information related to HARQ
  • a TF field for representing a modulation and coding scheme used at the time of transmission, or the like.
  • FIG. 22 and FIG. 23 shows a specific example of constructing a resource allocation map in a hierarchical pattern method in a case where a localized radio resource and a distributed radio resource according to a fourth exemplary embodiment of the present invention are mixed,
  • FIG. 22 shows mother MAP, and
  • FIG. 23 shows mother MAP
  • FIG. 23 shows child MAP. Meanwhile, in FIG. 22, the structure of the radio resource, the structure of the mobile terminal allocated with the resource, and the structure of the radio resource allocated to the corresponding mobile terminal are the same in those of FIG. 13 that corresponds to the above-described third exemplary embodiment.
  • the base station constructs a child localized RB bit pattern for each child map.
  • the child map 1 the second, third, fourteenth, and fifteenth RBs among all of the localized
  • the child localized RB bit pattern is composed of a bit column of 1100110.
  • the child localized RB bit pattern is constructed. Referring to the index bit pattern column that is constructed in the child map 1 , the terminals that are allocated with the child localized RBs correspond to the terminal #1 and the terminal
  • the terminal #1 is allocated with an index 0 and the terminal #2 is allocated with an index 1. Therefore, if the sub-map index bit pattern for the child localized RB is constructed in the Child MAPI, the sub-map index bit pattern becomes 0101. However, as in the child map 2, when the terminal #3 is only allocated with the child localized RB, the child localized RB bit pattern includes information for the localized RB that is allocated to the terminal #3. Therefore, it is not necessary to separately construct a sub-map index bit pattern.
  • the toggle bit 1 is allocated to the RB allocated to the terminal #4, and 0 is allocated to the other distributed RBs. In this way, the information can be displayed.
  • FIG. 24 shows a portion of a resource allocation map that is constructed in the method shown in FIG. 22 and FIG. 23, which shows a mother map that includes a new RB bit pattern column and a localized RB bit pattern column, and a child map that includes a sub-map index bit pattern for a child localized RB and a sub-map toggle bit pattern for the child distributed RB.
  • each child map separately manages information for the localized RB and the distributed RB allocated to each child map.
  • each mobile terminal can receive a child map allocated to each mobile terminal regardless of receiving another child map and obtain resource allocation information, even when an error occurs when another sub-map (child map) is received, each mobile terminal can accurately know the location of the radio resource that is allocated to each mobile terminal.
  • a base station constructs a mother map and a child map including resource allocation information in a hierarchical pattern method and a start-length method.
  • FIG. 25 is a flowchart illustrating a method of constructing a child map in a hierarchical pattern method and a start-length method in a case where a localized radio resource and a distributed radio resource according to a fifth exemplary embodiment of the present invention are mixed.
  • the child map according to the fifth exemplary embodiment of the present invention shows a method of allocating a resource in which information for a child distributed RB (sub-map distributed resource block) allocated in the corresponding map is constructed in a start-length method, a child distributed RB allocated to each child RB is displayed in a toggle pattern method, and information for the other distributed RBs is not included.
  • the method of constructing the mother map is the same as that in the above-described fourth exemplary embodiment, and the method of constructing the child map is different from the above-described method in an allocation portion for the distributed RB.
  • the description of the repetitive contents (Steps S60, S61 , and S62) will be omitted.
  • each child map represents a starting point and the length of the corresponding distributed RB in the start-length method (Step S64).
  • each child map represents resource allocation information in a toggle pattern method for the distributed RB allocated to each child map (Step S66).
  • the method of allocating the toggle bits to the distributed RB that is not allocated to each child map is changed to the method of allocating the toggled bit to the distributed RB that is allocated to each child map.
  • the number of terminals allocated with the distributed RB in each child map is 1
  • one terminal uses all the child distributed RBs. Therefore, allocation information can be represented by the start-length code without an additional sub-map toggle bit pattern. This corresponds to the case of the child map 1 shown in FIG. 27 to be described below.
  • FIG. 26 is a diagram illustrating an example of a child map that is constructed in a hierarchical pattern method and a start-length method in a case where a localized radio resource and a distributed radio resource according to a fifth exemplary embodiment of the present invention are mixed.
  • the child map according to the fifth exemplary embodiment includes information of a localized RB allocation and a distributed RB allocation for mobile terminals.
  • FIG. 27 shows an example of constructing a resource allocation map in a hierarchical pattern method and a start-length method in a case where a localized radio resource and a distributed radio resource according to a fifth exemplary embodiment of the present invention are mixed.
  • the method shown in FIG. 27 is different from the method shown in FIG. 22 in the method of constructing resource allocation information for the radio resource and a structure of resource allocation information for the distributed RB. Therefore, the repetitive description will be omitted.
  • FIG. 27 shows a constructing of child MAP
  • first to fourth distributed RBs are allocated to the child map 1 , and the start becomes 1 and the length thereof becomes 4. Meanwhile, in the child map 1 , one terminal is allocated with a distributed RB, and the allocation information is included in the start-length information. The additional toggle bits are not necessary. Meanwhile, in the child map 2, the start becomes 5, the length thereof becomes 7, and the number of terminals allocated with the distributed RB is two. Therefore, the sub-map toggle bit pattern is additionally required because of the length.
  • FIG. 28 shows a portion of a resource allocation map that is constructed in the method shown in FIG. 27, which shows a mother map that includes a new RB bit pattern column and a localized RB bit pattern column and a child map that includes a sub-map index bit pattern for the child localized RB and the start, the length, and the sub-map toggle bit pattern for the distributed RB.
  • each child map separately manages information for a localized RB and a distributed RB allocated to each child map.
  • each mobile terminal can receive a child map allocated to each mobile terminal regardless of receiving another child map and obtain resource allocation information. Even when an error occurs when receiving another sub-map (child map), each mobile terminal can accurately know the location of the radio resource that is allocated to each mobile terminal.
  • the method of constructing the map has been described without discriminating the downlink allocation and the uplink allocation.
  • the technology of the present invention can be applied to the downlink and uplink allocations by the same method.
  • the resource allocation information for the distributed RB is constructed.
  • the order may be changed.
  • a localized resource block localized RB
  • a distributed resource block distributed RB

Landscapes

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

Abstract

L'invention concerne un procédé destiné à construire une carte d'attribution de ressources dans un système de communication mobile. Dans un procédé de construction de carte d'un procédé de création de motif hiérarchique, dans le cas où un bloc de ressources localisé (BR localisé) et un bloc de ressources distribué (BR distribué) doivent être simultanément attribués par rapport à une ressource radio attribuée dans une trame précédente ou réservée avec une attribution fixe, une ressource radio qui est réservée ou non utilisée et une ressource radio qui est nouvellement attribuée dans une carte de trame courante sont classées et représentées. Ensuite, pour ce qui est d'une ressource radio attribuée dans une trame actuelle, un BR localisé et un BR distribué sont classés et représentés. Pour ce qui est du BR localisé, des informations d'attribution sont représentées dans un procédé de création de motif d'index, et pour ce qui est du bloc BR distribué, des informations d'attribution de ressources sont représentées dans un procédé de motif de type bascule. Selon le procédé de l'invention visant à construire une carte d'attribution de ressources à l'aide d'un motif hiérarchique, il est possible de réduire la taille d'une carte pour envoyer des informations concernant l'attribution de ressources à chaque terminal, et il est possible d'envoyer des informations précises concernant des ressources radio attribuées à chaque terminal mobile sans qu'il se produise d'erreur, lors de la réception d'une carte précédente ou d'une autre carte.
PCT/KR2007/002552 2006-05-25 2007-05-25 Procédé destiné à construire une carte d'attribution de ressources destinée à un système de communication mobile Ceased WO2007139320A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/301,972 US8331398B2 (en) 2006-05-25 2007-05-25 Method of constructing resource allocation map for mobile communication system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20060047054 2006-05-25
KR10-2006-0047054 2006-05-25
KR1020060097021A KR101284836B1 (ko) 2006-05-25 2006-10-02 이동통신시스템에서 자원 할당 맵 구성 방법
KR10-2006-0097021 2006-10-02

Publications (2)

Publication Number Publication Date
WO2007139320A2 true WO2007139320A2 (fr) 2007-12-06
WO2007139320A3 WO2007139320A3 (fr) 2008-03-06

Family

ID=38779105

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2007/002552 Ceased WO2007139320A2 (fr) 2006-05-25 2007-05-25 Procédé destiné à construire une carte d'attribution de ressources destinée à un système de communication mobile

Country Status (1)

Country Link
WO (1) WO2007139320A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102256258A (zh) * 2010-05-19 2011-11-23 中国移动通信集团公司 载频资源的分配方法及载频资源的分配装置
CN102415014A (zh) * 2009-04-28 2012-04-11 中兴通讯(美国)公司 在lte tdd系统中动态调整下行链路/上行链路分配比的方法和系统
KR101272772B1 (ko) 2007-12-17 2013-06-10 삼성전자주식회사 광대역 무선통신 시스템에서 동적 자원 할당 장치 및 방법

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4320446B2 (ja) * 2003-07-18 2009-08-26 韓國電子通信研究院 無線携帯ネットワークシステムにおける無線資源割当方法及び装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101272772B1 (ko) 2007-12-17 2013-06-10 삼성전자주식회사 광대역 무선통신 시스템에서 동적 자원 할당 장치 및 방법
US8498261B2 (en) 2007-12-17 2013-07-30 Samsung Electronics Co., Ltd. Apparatus and method for dynamic resource allocation in broadband wireless communication system
CN102415014A (zh) * 2009-04-28 2012-04-11 中兴通讯(美国)公司 在lte tdd系统中动态调整下行链路/上行链路分配比的方法和系统
CN102415014B (zh) * 2009-04-28 2014-10-29 中兴通讯(美国)公司 在lte tdd系统中动态调整下行链路/上行链路分配比的方法和系统
US8948105B2 (en) 2009-04-28 2015-02-03 Zte (Usa) Inc. Method and system for dynamic adjustment of downlink/uplink allocation ratio in LTE/TDD system
CN102256258A (zh) * 2010-05-19 2011-11-23 中国移动通信集团公司 载频资源的分配方法及载频资源的分配装置

Also Published As

Publication number Publication date
WO2007139320A3 (fr) 2008-03-06

Similar Documents

Publication Publication Date Title
US8331398B2 (en) Method of constructing resource allocation map for mobile communication system
KR100895165B1 (ko) 직교 분할 다중 접속 시스템을 위한 동적자원할당방법
US7944877B2 (en) Apparatus and method for allocating resources in an orthogonal frequency division multiple access mobile communication system
US7787356B2 (en) Method and apparatus for indexing physical channels in an OFDMA system
US9167569B2 (en) Method and apparatus for allocating resources of a control channel in a mobile communication system using orthogonal frequency division multiplexing
KR100973946B1 (ko) 직교 주파수 분할 다중 접속 통신 시스템에서 밴드 적응적변조 및 코딩 서브 채널 운용을 위한 시스템 및 방법
EP1758327B1 (fr) Allocation de ressources dans un système de communication cellulaire OFDM
US20070002958A1 (en) Apparatus and method for configuring frame in a broadband wireless communication system
CN101772220B (zh) 上行参考信号的配置方法、系统及装置
CN1891007A (zh) 分配适合信道特性的导频信号的方法及设备
KR20050123041A (ko) Ｏｆｄｍ／ｏｆｄｍａ 시스템의 무선자원 할당 방법
KR20050117445A (ko) 직교 주파수 분할 다중 접속 방식의 무선 통신 시스템에서핸드오버 방법
US8886238B2 (en) Method of allocating radio resource in wireless communication system
US8843145B2 (en) Method and apparatus for transmitting data using guard physical resource units in multiple-carrier system
KR100754732B1 (ko) 직교 주파수 분할 다중 이동 통신 시스템에서의 방송서비스를 위한 패킷 다중화 장치 및 방법
KR101696464B1 (ko) 무선 통신 시스템에서 파일럿 전송 방법 및 장치
WO2007139320A2 (fr) Procédé destiné à construire une carte d'attribution de ressources destinée à un système de communication mobile
US8331472B2 (en) Method and apparatus for transmitting/receiving data in an orthogonal frequency division multiple access system
KR20070093657A (ko) 직교 주파수 다중 접속 방식의 시스템에서 자원 할당 방법및 장치
KR101108056B1 (ko) 다수의 부 반송파를 이용하여 데이터를 송수신하는 방법
KR20050122793A (ko) Ｏｆｄｍ/ｏｆｄｍａ시스템의 무선자원 할당 스케쥴링 방법
KR20050091578A (ko) 직교 주파수 분할 다중 접속-시분할 듀플렉싱 방식을사용하는 통신 시스템에서 공통 제어 정보 송수신 장치 및방법
KR20060002433A (ko) 직교 주파수 분할 다중 접속 방식을 사용하는통신시스템에서 안정적 채널 할당 방법

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07746700

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 12301972

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07746700

Country of ref document: EP

Kind code of ref document: A2