WO2011113277A1 - Procédé de mappage de ressources et station de base - Google Patents

Procédé de mappage de ressources et station de base Download PDF

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Publication number
WO2011113277A1
WO2011113277A1 PCT/CN2010/077862 CN2010077862W WO2011113277A1 WO 2011113277 A1 WO2011113277 A1 WO 2011113277A1 CN 2010077862 W CN2010077862 W CN 2010077862W WO 2011113277 A1 WO2011113277 A1 WO 2011113277A1
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Prior art keywords
resource
allocation
resource unit
base stations
indication information
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PCT/CN2010/077862
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English (en)
Chinese (zh)
Inventor
宁丁
关艳峰
方惠英
宁迪浩
朱登魁
鲁照华
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中兴通讯股份有限公司
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Publication of WO2011113277A1 publication Critical patent/WO2011113277A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load
    • 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

Definitions

  • the present invention relates to the field of communications, and in particular to a resource mapping method and a base station.
  • OFDM Orthogonal Frequency Division Multiplexing
  • OFDMA Orthogonal Frequency Division Multiple Address
  • LTE Long Term Evolution
  • UMB Ultra Mobile Broadband
  • IEEE 802.16m wireless resources are divided into frames for management, but each OFDM A symbol contains multiple Subcarriers that are mutually orthogonal, and the terminal usually occupies part of the subcarriers, so that techniques such as Fractional Frequency Reuse (FFR) can be used to reduce interference and improve coverage.
  • FFR Fractional Frequency Reuse
  • the base station divides the available physical subcarriers into physical resource units (PRUs), and then maps the physical resource units into continuous resource units (Contiguous Resource Units, referred to as For CRU) and distributed resource units (distributed Resource Unit (referred to as DRU) to improve transmission performance, where subcarriers in consecutive resource units are continuous, and subcarriers in distributed resource units are completely discontinuous or not completely continuous;
  • PRU physical resource units
  • DRU distributed Resource Unit
  • base stations need to support multiple different bandwidths (eg, 5MHz, 10MHz or 20MHz) or multi-carrier operation to take advantage of different frequency resources and meet the needs of different operators.
  • the base station usually maps the physical radio resources into logical radio resources, for example, mapping physical subcarriers into logical resource units, and the base station implements scheduling of radio resources by scheduling logical resource units.
  • the radio resource mapping is mainly based on the frame structure and resource structure of the wireless communication system, the frame structure describes the control structure of the radio resource in the time domain, and the resource structure describes the radio resource in the Control structure in the frequency domain.
  • the frame structure divides the radio resources into different levels of units in the time domain, such as a superframe (frame), a frame (frame), Subframes and symbols (Symbol) implement scheduling control by setting different control channels (for example, broadcast channels, unicast and multicast channels, etc.).
  • a superframe for example, broadcast channels, unicast and multicast channels, etc.
  • Symbol for example, broadcast channels, unicast and multicast channels, etc.
  • the radio resource is divided into super frames in the time domain, each super frame includes 4 frames, each frame includes 8 subframes, and the sub frame is composed of 6 basic OFDMA symbols, and the actual system is required according to needs.
  • Factors such as the supported bandwidth and/or the cyclic prefix length of the OFDMA symbol determine how many OFDMA symbols are included in each level unit in the frame structure; in addition, the system can set the broadcast channel in the first downlink subframe in the superframe (due to Located in the superframe header, also called Superframe Header (SFH), and sends system information such as resource mapping; and the system can also set scheduling control such as unicast and/or multicast-type control channel transmission resource allocation. information.
  • the resource structure divides the available bandwidth in the frequency domain into multiple frequency partitions (Frequency Partitions, FP for short), and then shows the frequency as shown in Figure 2.
  • the available physical subcarriers are divided into three frequency partitions, each of which is divided into a continuous logical resource unit (CLRU) and a distributed logical resource unit (DLRU), and the continuous logical resource unit is used for frequency selective scheduling, and the distributed logical resource unit is used.
  • CLRU continuous logical resource unit
  • DLRU distributed logical resource unit
  • the resource mapping method generally needs to support 5MHz, 7MHz, 8.75MHz, 10MHz and 20MHz system bandwidth (referred to as bandwidth), while 5MHz, 7MHz, 8.75MHz, 10MHz and 20MHz bandwidth are used for partial protection subcarriers when multi-carrier operation is not considered.
  • bandwidth system bandwidth
  • mapping PRUs the number of corresponding PRUs is 24, 48, 48, 48, and 96. Therefore, the indication parameters of resource mapping are different under different system bandwidths.
  • a system with a bandwidth of 5 MHz has 24 PRUs per subframe, and when 4 PRUs form a subband, there are up to 6 Subbands, while in a 7 MHz, 8.75 MHz, or 10 MHz system, there are 48 PRUs. There are 12 Subbands.
  • SAC Subband Allocation Count
  • the downlink resource mapping process usually includes: Subband Partitioning, Miniband Permutation, Frequency Partitioning, Contigous Resource Unit/Distributed Resource Unit Allocation (Contigous Resource Unit/Distributed Resource Unit Allocation, Referred to as CRU/DRU Allocation and Subcarrier Permutation), the uplink resource mapping process includes: subband division, start band permutation, frequency partition division, continuous resource unit/distributed resource unit allocation, and tile permutation.
  • the generated Subband and Miniband will be allocated to each frequency partition through the step of Frequency Partitioning, and then enter the fourth step of resource mapping CRU/DRU Allocation.
  • the contiguous resource unit/distributed resource unit allocation is implemented by the following means:
  • the SFH sends a DCASSBQ, DCAS MB Q to the terminal, and the DCASi notifies the terminal of the downlink resource unit/distributed resource unit allocation method.
  • the base station also sends the UCAS SB0 , UCAS MBQ , and UCASi to the terminal to notify the terminal of the uplink continuous resource unit/distributed resource unit.
  • a multiple input multiple output (MIMO) system is a communication system in which a plurality of antennas are respectively disposed at a transmitting end and a receiving end. It is mainly divided into two types.
  • the receiving end When there are multiple antennas at the transmitting end or the receiving end, and the data sets sent by the respective transmitting antennas are the same, the receiving end combines the signals obtained by the multiple branches, thereby improving the reliability of the link.
  • the MIMO-like technology is called spatial diversity.
  • multiple antennas exist at the same time on the transmitting end and the receiving end, since the MIMO channel is equivalent to multiple parallel channels, multiple data streams can be simultaneously transmitted in parallel to improve the data transmission rate.
  • This type of MIMO technology is called spatial multiplexing.
  • a receiving end estimates a channel according to various methods (method of estimating a channel includes, but is not limited to, using dedicated pilot, intermediate pilot, and sounding, etc.), and then performs certain processing on information reflecting a channel condition.
  • An Open Loop Region refers to allocating a physical resource at a physical location of a communication system, and all base stations use a similar MIMO feedback mode for the physical resource.
  • an open loop region is used to perform similar MIMO feedback operations for all base stations to reduce interference between cell base stations.
  • the open-loop area requires each base station to use the same physical resource, and the MIMO feedback mode of the open-loop area of each base station will be the same or similar.
  • a primary object of the present invention is to provide a resource mapping method and a base station to solve at least the above problems.
  • a resource mapping method including: a plurality of base stations in a communication system send a super frame header to a terminal, where the super frame header carries an indication indicating that a use status of the open loop area is supported Information:
  • the plurality of base stations perform resource mapping according to the indication information, so that there are aligned logical resource units between the plurality of base stations.
  • the foregoing use states include: enabling or disabling; or, the foregoing use states include: turning on or off.
  • the base station may carry the foregoing indication information by using one of the following manners: a Cyclic Redundancy Check (CRC) by using a specific sequence and a primary superframe header by including one binary bit in the superframe header.
  • CRC Cyclic Redundancy Check
  • the mask is masked by a specific sequence and the CRC of the secondary superframe header. Further, the method further includes: the base station sending a system configuration message to the terminal, where the system configuration message carries the identifier information indicating the type and/or quantity of the logical resource unit used as the open loop area. Further, the aligned logical resource units refer to logical resource units having the same physical location.
  • the indication information indicating that the use status of the open loop area is supported includes: the indication information, the base station performing resource mapping includes: the multiple base stations in the resource mapping process, when performing the allocation of the continuous resource unit/distributed resource unit, the frequency partitioning The microstrips in the whole are all distributed resource units, and all the sub-bands in the frequency partition are regarded as continuous resource units.
  • the foregoing indication information specifically indicates whether allocation of consecutive resource units/distributed resource units is performed in all frequency partitions in the resource mapping process; then, multiple base stations perform allocation of continuous resource units/distributed resource units in the resource mapping process. When all the start bands in all frequency partitions are used as distributed resource units, all the sub-bands in all frequency partitions are regarded as continuous resource units.
  • the foregoing indication information specifically indicates that the predetermined frequency partition is in the resource mapping process. Whether the allocation of the continuous resource unit/distributed resource unit is performed; when the plurality of base stations perform the allocation of the continuous resource unit/distributed resource unit in the resource mapping process, all the start bands in the predetermined frequency partition are used as the distributed resource unit, and the The sub-bands in the predetermined frequency partition are all regarded as continuous resource units.
  • the indication information indicating that the use status of the open loop area is supported includes: the indication information indicates that the plurality of base stations use the same predetermined parameter to perform allocation of the continuous resource unit/distributed resource unit; and the resource mapping by the multiple base stations includes: In the resource mapping process, the base station performs the allocation of the continuous resource unit/distributed resource unit with the same predetermined parameters when performing the allocation of the continuous resource unit/distributed resource unit.
  • the foregoing indication information specifically indicates that multiple base stations use the same predetermined parameters to allocate consecutive resource units/distributed resource units in all frequency partitions; multiple base stations use the same in all frequency partitions in the resource mapping process.
  • the predetermined parameters are assigned to the contiguous resource unit/distributed resource unit.
  • the foregoing indication information specifically indicates that the plurality of base stations perform the allocation of the continuous resource unit/distributed resource unit by using the same predetermined parameter in the predetermined frequency partition; the multiple base stations use the same in the predetermined frequency partition in the resource mapping process.
  • the predetermined parameters are used to allocate continuous resource units/distributed resource units.
  • the above predetermined parameters include: a replacement base and/or a replacement seed.
  • the foregoing predetermined parameters include any one or combination of the following: a replacement base, a replacement seed, and a UCAS SB . , UCAS MB .
  • the predetermined parameters include at least one of: a replacement base, a replacement seed, DCAS SB o, DCAS MB0, and DCASi.
  • the base station includes indication signaling for indicating a logical resource unit used as an open loop region in a system configuration message sent to the terminal or a superframe header.
  • a base station including: a transmitting module and a mapping module.
  • the sending module is configured to send a superframe header to the terminal, where the superframe header carries indication information indicating that the usage status of the open loop area is supported, and the mapping module is configured to perform resource mapping according to the indication information, so that the base station There are logical resource units aligned with other base stations in the communication system.
  • the base station ensures that there are aligned logical resource units between multiple base stations of the current communication system when performing resource mapping, which solves the problem that different base stations in the prior art cannot schedule the same.
  • Physical resources act as open-loop areas, which in turn increases system efficiency.
  • FIG. 1 is a schematic diagram of a frame structure of a wireless communication system according to the related art
  • FIG. 2 is a schematic diagram of a resource structure of a wireless communication system according to the related art
  • FIG. 3 is a flowchart of a resource mapping method according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • A-MAP Advanced MAP
  • DCAS/UCAS Downlink/Uplink CRU Allocation Size
  • DCASi/UCASi indicates the number of consecutive resource units per frequency partition except the first frequency partition
  • DCASMB/UCASMB Downlink/Uplink miniband-based CRU Allocation Size: The downlink/uplink continuous resource unit allocation size, specifically, used to indicate the number of consecutive resource units allocated to the frequency partition in units of start bands (MB), where In the embodiment of the present invention, the indication may be performed in units of microstrips or subbands.
  • DCAS SB /UCASSB Downlink/Uplink subband-based CRU Allocation Size: The downlink/uplink continuous resource unit allocation size, specifically, the number of SB-based contiguous resource units allocated to the frequency partition, where DCAS SB . /UCAS SB . Indicates the parameters of the first frequency partition Number,
  • DSAC DL Subband Allocation Count
  • DRU Distributed Resource Unit
  • distributed resource unit distributed resource unit
  • LRU Logical Resource Unit
  • MIMO Multiple Input Multiple Output
  • Multiple Input Multiple Output Multiple Input Multiple Output
  • OL Region Open Loop Region : open loop area
  • PRU Physical Resource Unit
  • SFH Superframe Header: Superframe header, which acts as a broadcast control channel in some communication systems;
  • FIG. 3 is a flowchart of a resource mapping method according to an embodiment of the present invention.
  • the resource mapping method provided by the embodiment of the present invention mainly includes the following steps (step 302 - step S304): Step S302, a communication system
  • the plurality of base stations send a super frame header (SFH) to the terminal, where the super frame header includes indication information indicating that the use status of the open loop area is supported; and step S304, the multiple base stations perform resource mapping according to the indication information, so that There are aligned logical resource units between the plurality of base stations.
  • SFH super frame header
  • each base station in the communication system performs resource mapping, so that resource elements with the same physical location exist in the resource units used by all the base stations, and the terminal resource allocation is supported by the super frame header to support open loop.
  • the use of the area so that each base station in the communication system uses the same logical resource to schedule the same physical resources, so that different base stations can schedule the same physical resource as the open-loop area.
  • the use status of the open loop area includes: enabling or disabling, that is, the indication information indicates that the open loop area can be used; or the use status may also include: turning on or off, that is, the indication information indicates whether Use an open loop area.
  • the foregoing indication information may be carried in one of the following manners: by including one binary bit in a super frame header, masking with a CRC of a primary superframe header by a specific sequence, by using a specific sequence and a secondary superframe The header CRC is masked.
  • the method may further include: the base station sending a system configuration message to the terminal, where the system configuration carries a logical resource unit indicated to be used as an open loop area (above Identification information of the type and/or number of aligned logical resource units).
  • the aligned logical resource units refer to logical resource units with the same physical location.
  • each base station is allocated according to the replacement base and/or the conversion seed of each base station when the continuous resource unit/distributed resource unit is allocated, thereby causing each base station to use the same logical resource.
  • the physical resources of the scheduling are different.
  • each base station of the communication system does not perform continuous resource unit/distributed resource unit allocation in the process of resource mapping, but uses all Minibands in the frequency partition as all The Subbands in the DRU, 4 bar frequency partition are all used as CRUs, and the terminal is notified by the indication information.
  • the foregoing indication information included in the superframe header identifies whether the open loop region is supported by indicating whether the allocation of the continuous resource unit/distributed resource unit is performed in the resource mapping process.
  • each base station performs allocation of continuous resource units/distributed resource units, and all the MiniBands in the frequency partition are used as distributed resource units, and the sub-bands (SubBand) in the frequency partition are all consecutive. Resource unit.
  • the resource units and the resource units used by the respective base stations are arranged in exactly the same position, so that resource units having the same physical location among the resource units used by the respective base stations can be simply realized.
  • 1-bit control signaling (OL Region Enable) may be added to the superframe header (SFH, some systems are called broadcast control channels) of the communication system to indicate whether the open loop region is supported. Since the indication information only occupies 1 bit, the signaling overhead of the system can be reduced.
  • OL Region Enable 1 means that the 4th CRU/DRU Allocation is not performed, but the Miniband in the 1 1 frequency partition is all created as a DRU, the Subbands in the frequency partition are all made into CRUs, and then the next step of resource mapping is performed.
  • the frequency partition may be a pre-agreed frequency partition of the base station and the terminal, and therefore no additional information notification is required.
  • each base station performs the frequency mapping, and all the Minibands in the specific frequency partition are regarded as DRUs, and Subbands in a specific frequency partition are all used as CRUs.
  • Mode 2 Each base station cannot use the same logical resource to schedule the same physical resource. The main reason is that each parameter is different.
  • each base station uses the same parameter when performing the allocation of the continuous resource unit/distributed resource unit, the base station sets The physical location of the resource unit is the same. Therefore, in the second mode of the embodiment, each base station uses a parameter to limit the allocation of the continuous resource unit/distributed resource unit to ensure that the resource unit having the same physical location exists in the resource unit used by each base station.
  • the foregoing indication information performs CRU/DRU Allocation by instructing each base station to use the same predetermined parameter, and each base station performs CRU/DRU in the resource mapping process. In Allocation, CRU/DRU Allocation is performed with the same predetermined parameters. In this way, the existing resource mapping process is less altered.
  • the foregoing indication information may be implemented by placing 1-bit information ( OL Region Enable ) in a super-frame header (SFH), by which the step CRU/DRU Allocation may still be indicated, but
  • the DCAS SB DCAS DCASi in the downlink system performs the parameters of the step, or the base station performs the parameters of the step by using the SUCAS SB UCAS UCASi in the replacement base and/or the replacement seed and the superframe header as the uplink system, wherein, at least The permutation base and/or permutation seed of each base station is different.
  • each base station will reserve a base and/or a replacement seed (the replacement base and/or The replacement seed is pre-agreed by the base station and the terminal, for example, may be 0) and the DCAS SB0 DCAS MB DCASi in the superframe header is used as a parameter of the downlink system, or each base station will reserve a replacement base and/or a replacement seed.
  • each base station uses the same permutation base and/or permutation seed for CRU/DRU Allocation.
  • each base station uses a permutation base and/or replacement seed in CRU/DRU Allocation, DCAS SBQ DCAS MBQ and DCASi, or a replacement base and/or a replacement seed, UCAS SB UCAS MB .
  • Both the base station and the terminal are pre-agreed by the base station and the UCASi, that is, the base station and/or the replacement seed, the DCAS SB DCASMBO and the DCASi used by each base station in the CRU/DRU Allocation, or the base stations are used in the CRU/DRU Allocation.
  • the substitution base and / or replacement seed, UCAS SB0 UCAS MB0 and UCAS are the same. In this way, although each base station performs CRU/DRU Allocation, it can also ensure that the resource units selected by each base station have the same physical location.
  • the system configuration message sent to the terminal or the indication signaling indicating the logical resource unit used as the open loop area may be included in the SFH, and each base station indicates the indication signaling.
  • the logical resource unit is used as an open-loop area, and each base station performs similar MIMO feedback operation in the open-loop area, so that interference between the cell base stations can be reduced.
  • the indication signaling may be used to indicate the number of logical resource units used as an open loop region, in which case the open loop region may start from the most significant position of the logical location of the logical resource unit, and then down.
  • the logical resource units indicated by the indication signaling are arranged, and the other logical resource units are not used as the open loop area i or used.
  • the length of the OL Region DLRU is 2 bits
  • the open loop area is started from the lowest bit of the logical position of the DLRU, and is sequentially arranged downward, and the remaining resources are not used for the open loop area.
  • the foregoing two methods may be configured only for downlink resource mapping, and not for uplink mapping resources, and vice versa.
  • the following description is made by way of specific embodiments.
  • the resource mapping is performed in the foregoing manner.
  • a signalling OL Region Enable is set in the SFH sent by the base station to the terminal, and the terminal resource allocation is notified whether the use of the open loop area is supported.
  • the OL Region Enable signaling definition is as shown in Table 1. Table 1
  • OL Region Enable 1
  • the CRU/DRU Allocation of the base station in the resource mapping step is not performed, and the frequency partition is directly The Miniband is all made into a DRU, and all the Subbands in the frequency partition are made into CRUs to keep the physical positions of the DRUs taken by each base station the same.
  • OL Region Enable 0, it means that the open-loop area may not be supported, and the CRU/DRU Allocation in the resource mapping step is performed according to the common procedure, that is, according to the replacement base of each base station and/or the replacement seed and the DCAS in the superframe header.
  • Embodiment 2 In this embodiment, resource mapping is performed in the foregoing manner 2.
  • a signaling OL Region Enable is set in the SFH sent by the base station to the terminal, and the terminal resource allocation is notified whether the use of the open loop region is supported.
  • the OL Region Enable signaling is defined in Table 2. Table 2
  • OL Region Enable 0, it means that the open-loop area may not be supported, and the CRU/DRU Allocation in each base station resource mapping step is performed according to the common procedure, according to the replacement base of each base station and/or the replacement seed and the DCAS SB in the super-frame header.
  • DCAS MB o, DCASi determines the CRU/DRU allocation of the downlink system, and determines the uplink system CRU/DRU allocation according to each base station replacement base and/or replacement seed and UCAS SB0 , UCASMBO, UCASi in the superframe header.
  • OL Region Enable 1 means that the open-loop area can be supported, but the open-loop area does not exist, the CRU/DRU Allocation in the resource mapping step is still in progress, but the bases and/or bases used by all base stations in this step are used.
  • the permutation seed is set to the same (eg, set to 0) to keep the DRU physical location taken by each base station the same, but this step does not affect the permutation base and/or permutation seed used in other steps. It should be noted that the method used in this embodiment may be configured only for downlink resources, not for uplink resources, and vice versa.
  • the mask CRC check bit of the sub-packet is used to indicate whether the open-loop area is enabled. For example, when the CRC length of the mask is 16 bits, if the function of opening the open loop area is enabled, the CRC and the special vector (1111111111111111) are XORed (or masked), and then sent, such as indicating that the open loop area i or function is not enabled. And the special vector ( 0000000000000000 ) is XORed (or masked;) and then sent.
  • the receiving end can distinguish whether the CRC is XORed with the special vector by the content of the sub-packet, and judge whether to open the open-loop area function.
  • the SFH sub-packet may refer to all sub-packets or a specific sub-package of the SFH terminal. For example, when the SFH has three sub-packets SP1, SP2, and SP3, the CRC check of the SP1 may be used alone to indicate whether the open loop area function is enabled. It is also possible to simultaneously detect the CRC check results of the three sub-packets. When only the check results of the three sub-packets are a certain value, it indicates whether the open-loop area function is enabled.
  • the base station sends a control message to the terminal, where the control message includes parameters of the open loop area, and the parameters include but are not limited to one or a combination of the following: the type of the open loop area, the length of the open loop area, and the position of the open loop area.
  • the control message includes any one or combination of the following: a system configuration message, a super frame header, and an A-MAP IE.
  • a base station is also provided according to the embodiment of the present invention, and the base station can be used to implement the foregoing method provided by the embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a base station according to an embodiment of the present invention. As shown in FIG. 4, the base station includes: a sending module 40 and a mapping module 42.
  • the sending module 40 is configured to send a super frame header to the terminal, where the super frame header includes indication information for indicating use of the open loop area, and a mapping module, configured to perform resource mapping according to the indication information, where The resource unit used by the base station and the resource unit used by other base stations in the communication system have the same physical location. Yuan.
  • the above-mentioned base station provided by the embodiment of the present invention may enable resource units of the same physical location in the resource units used by the base stations in the communication system, so that different base stations can schedule the same physical resources as the open loop area.
  • the physical resources scheduled by each base station in the communication system using the same logical resource can be the same, thereby ensuring different base stations.
  • the same physical resource can be scheduled as an open loop area, so that the communication system can better utilize physical resources and improve system efficiency.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

Un procédé de mappage de ressources et une station de base sont fournis dans la présente invention. Le procédé inclut les étapes suivantes consistant à : dans un système de communication, une pluralité de stations de base envoient des en-têtes de super trame à des terminaux, dans lequel les en-têtes de super trame contiennent des informations indicatives destinées à rapporter l'état d'utilisation pris en charge d'une région de boucle ouverte ; et la pluralité de stations de base exécutent un mappage de ressources selon les informations indicatives de telle sorte que des unités de ressources logiques alignées existent parmi la pluralité de stations de base. Grâce à la présente invention, le rendement du système est amélioré.
PCT/CN2010/077862 2010-03-17 2010-10-19 Procédé de mappage de ressources et station de base WO2011113277A1 (fr)

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WO2008073246A2 (fr) * 2006-12-07 2008-06-19 Interdigital Technology Corporation Procédé de communication sans fil et dispositif pour attribuer des signaux d'entraînement et des bits d'information
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