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WO2011106945A1 - Procédé d'indication d'une affectation de ressources et station de base associée - Google Patents

Procédé d'indication d'une affectation de ressources et station de base associée Download PDF

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Publication number
WO2011106945A1
WO2011106945A1 PCT/CN2010/072815 CN2010072815W WO2011106945A1 WO 2011106945 A1 WO2011106945 A1 WO 2011106945A1 CN 2010072815 W CN2010072815 W CN 2010072815W WO 2011106945 A1 WO2011106945 A1 WO 2011106945A1
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WIPO (PCT)
Prior art keywords
resource
resource allocation
units
unit
base station
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PCT/CN2010/072815
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English (en)
Chinese (zh)
Inventor
陈宪明
关艳峰
方惠英
宁丁
刘向宇
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ZTE Corp
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ZTE Corp
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    • 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
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to the field of communications, and in particular to a method and a base station for allocating resources.
  • a base station performs scheduling control
  • scheduling allocation of all available resources of the system is performed by a base station, for example, a resource used by a base station to allocate and perform downlink transmission, and a resource used by the terminal for uplink transmission.
  • the base station needs to transmit a resource allocation message on the downlink channel. If an unreasonable indication method of allocating resources is used, the downlink resources of the system are wasted, thereby reducing the transmission efficiency of the entire system.
  • the base station may use different methods, different messages or signaling for resource indication, for example, in the Institute for Electrical and Electronic Engineers (IEEE) 802.16d/e
  • IEEE Institute for Electrical and Electronic Engineers
  • the base station gives the time domain symbol starting point, the time domain symbol length, and the frequency in the resource allocation control information.
  • a plurality of information such as a domain channel start point and a frequency domain channel offset, and the user uniquely determines the size of the resource to which it is allocated and its location based on the information.
  • the resource mapping process is relatively complicated, mainly because multiple transmission modes are supported in order to construct multiple types of logical resource units.
  • the downlink resource mapping process generally includes: Subband Partitioning, Miniband Permutation, Frequency Partitioning, and contiguous resource elements. Contiguous Resource Unit/Distributed Resource Unit Allocation (CRU/DRU Allocation) and Subcarrier Permutation.
  • the uplink resource mapping process includes: subband division, microstrip replacement, frequency partition division, and continuous Resource unit/distributed resource unit allocation and Tile Permutation.
  • the resource mapping information is sent by the base station to the terminal through the broadcast channel or the superframe, and the terminal obtains the type and number of the logical resource unit according to the resource mapping information.
  • the resource mapping information indicates the division and mapping of the frequency resources, and specifically includes the following information: downlink subband allocation number, uplink subband allocation number, downlink frequency partition configuration, uplink frequency partition configuration, downlink frequency partition subband allocation number, uplink frequency The number of partition subband allocations, the number of downlink contiguous resource unit allocations, the number of uplink contiguous resource unit allocations, and the downlink based Miniband The number of consecutive resource units, and the number of consecutive resource units based on Miniband. As shown in Figure 1, there are a total of 512 subcarriers in the entire bandwidth. Among them, there are 39 and 40 guard subcarriers in the high frequency band and the low frequency band.
  • the physical resource units are divided into subbands and/or minibands by a subband division process. In FIG. 1, one subband may be composed of N1 (for example, 4) PRUs.
  • the sub-band PRU is called PRU SB , and one micro-band is composed of N2 (for example, 1) PRU, and then all micro-band PRUs (called PRU MB ) are replaced by a microstrip to form a replaced micro-band PRU ( PPRU MB ), then all PRUs are divided into one or more frequency partitions by frequency partitioning.
  • N2 for example, 1
  • PRU MB micro-band PRUs
  • Contiguous logical resource unit including a sub-band-based continuous logical resource unit and a microstrip-based logical resource unit, wherein, in FIG. Includes contiguous logical resource units based on subbands.
  • a resource allocation indication method based on a triangular tree, a binary tree, a combined tree or a bitmap (or bitmap) is usually used.
  • the above method cannot effectively indicate all resource allocation situations, and the resource indication range is narrow, which limits the flexibility of resource indication.
  • a primary object of the present invention is to provide a method and a base station for allocating resources to solve at least one of the above problems.
  • Another aspect of the present invention provides a method for indicating allocation of resources, including the following steps:
  • the base station allocates, to the terminal, a logical resource unit in a specified number of subbands, where a part of the logical resource units in the subbands at the predetermined position in the specified number of subbands are allocated, and all logical resource units in the subbands in other locations are allocated.
  • the base station sends the resource indication information to the terminal, where the resource indication information carries the following information: an index value for indicating a combination of the number of the specified number of sub-bands, and information of the partial logical resource unit.
  • the resource indication information indicates a group in which the resource allocation unit allocated by the base station for the terminal and/or a resource allocation unit allocated by the base station to the terminal in the group.
  • a further aspect of the present invention provides another base station, including: a resource allocation module, configured to allocate, to a terminal, a logical resource unit in a specified number of subbands, where the specified number of subbands are in a subband at a predetermined position The part of the logical resource unit is allocated, and all the logical resource units in the sub-bands of the other location are allocated; the sending module is configured to send the resource indication information to the terminal, where the resource indication information carries the following information: The indexed value of the combined number, as well as the information of the partial logical resource unit.
  • the M resource allocation units are further divided into K groups, and finally the resource indication information is sent to the terminal to indicate resource allocation.
  • the group in which the unit is located and/or the resource allocation unit allocated by the base station to the terminal in the group solves the problem that the resource indication range existing in the related art is narrow or the indication method has low flexibility, and the method has low complexity and is implemented. Simple, in the case where the number of bits of the resource indication information is limited, the resource indication range is expanded.
  • FIG. 1 is a schematic diagram of a resource mapping process of a 5 MHz bandwidth system according to the related art
  • FIG. 2a is a structural block diagram of a base station according to an embodiment of the present invention
  • 2b is a block diagram showing another structure of a base station according to an embodiment of the present invention
  • FIG. 1 is a schematic diagram of a resource mapping process of a 5 MHz bandwidth system according to the related art
  • FIG. 2a is a structural block diagram of a base station according to an embodiment of the present invention
  • 2b is a block diagram showing another structure of a base station according to an embodiment of the present invention
  • FIG. 1 is a schematic diagram of a resource mapping process of a 5 MHz bandwidth system according to the related art
  • FIG. 2a is a structural block diagram of a base station according to an embodiment of the present invention
  • 2b is a block diagram showing another structure of a base station according to an embodiment of the present invention
  • FIG. 1 is a schematic diagram of a resource mapping process of a
  • FIG. 3 is a block diagram showing a detailed structure of a base station according to an embodiment of the present invention
  • FIG. 4a is a flowchart of a method for indicating allocation of resources according to an embodiment of the present invention.
  • FIG. 4b is a detailed flowchart of a method for indicating allocation of resources according to an embodiment of the present invention;
  • FIG. 4c is another flowchart of a method for indicating allocation of resources according to an embodiment of the present invention;
  • FIG. 6 is a schematic diagram of resource element index coding and indication of 12 SLRUs according to a preferred example 1 of the embodiment of the present invention;
  • FIG. 7 is a preferred embodiment of the present invention. Schematic diagram of resource unit index coding and indication of 32 SLRUs of Example 2;
  • FIG. 4a is a flowchart of a method for indicating allocation of resources according to an embodiment of the present invention.
  • FIG. 4b is a detailed flowchart of a method for indicating allocation of resources according to an embodiment of the
  • FIG. 8 is a schematic diagram of resource element index coding and indication of 64 SLRUs using one resource allocation information element of Preferred Example 3 according to an embodiment of the present invention
  • FIG. 10a is a diagram according to the present invention A resource unit index coding and indication diagram of 64 SLRUs using two resource allocation information units in a preferred example 5 of the embodiment
  • FIG. 10b is a resource unit index of 64 SLRUs according to a preferred example 6 of the embodiment of the present invention
  • FIG. 11 is a schematic diagram of resource element index coding and indication of 16 SLRUs according to a preferred example 7 of the embodiment of the present invention
  • FIG. 12 is a view of 9 sub-bands of preferred example 8 according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of resource element index coding and indication of 9 sub-bands according to a preferred example 9 of the embodiment of the present invention;
  • FIG. 14 is a preferred example 10 according to an embodiment of the present invention.
  • Resource sub-index of 9 sub-bands BRIEF DESCRIPTION OF THE DRAWINGS
  • Figure 15 is a schematic illustration of preferred logical instances of preferred embodiments 8, 9, and 10 of the present invention indicating logical resource elements selected within a certain sub-band range.
  • a base station is provided.
  • 2a is a structural block diagram of a base station according to an embodiment of the present invention. As shown in FIG.
  • the scheduling module 24 schedules the packet module 26 to group the resource allocation units to reduce the number of bits required to indicate the resource allocation unit, so that the number of bits of the resource indication information is limited.
  • the scope of the indication is extended.
  • an expansion module 32 connected to the grouping module 26, configured to: display the resource indication information by using the resource indication information in the multiple resource allocation information units corresponding to the terminal The number of occupied bits is extended to B*P, where B is the number of multiple resource allocation information units
  • the second dividing module 34 is configured to divide the M resource allocation units into A resource allocation subunits, and the resource indication The information indicates the resource allocation sub
  • the scheduling module 24 schedules the second partitioning module 34 to perform the re-division of the resource allocation unit, thereby effectively preventing the bit of the resource indication information from being fully utilized, and improving the utilization efficiency of the resource indication information. , more flexible resource indication.
  • a structure of a base station is further provided, and FIG. 2b is a block diagram of another structure of the base station according to the embodiment of the present invention. As shown in FIG.
  • the base station includes: a resource allocation module 21, configured to The terminal allocates a logical resource unit in a specified number of subbands, where the specified number is A part of the logical resource units in the sub-bands in the sub-bands are allocated, and all the logical resource units in the sub-bands of the other locations are allocated; the sending module 23 is connected to the resource allocating module 21, and is configured to send the resource indication to the terminal.
  • Information where the resource indication information carries the following information: an index value indicating a combination of numbers of a specified number of subbands, and information of a part of logical resource units. According to the embodiment of the present invention, an indication method for allocating resources is provided.
  • the resource in the unit indicates the number of bits occupied by the information.
  • Step S406 The base station sends the resource indication information to the terminal, where the resource indication information indicates a group in which the resource allocation unit allocated by the base station for the terminal and/or a resource allocation unit allocated by the base station to the terminal in the group.
  • the number of bits of the resource indication information may be insufficient, and the number of bits occupied by the resource indication information may be saved by means of grouping, and the indication manner is particularly suitable for the case where the allocated resources belong to the same group, for the allocation. If the resources do not belong to the same group, other resource indication information may be sent multiple times to indicate.
  • the grouping is performed only in the case of M>P, so as to avoid the fact that the packet is still in the case where the number of bits occupied by the resource indication information is sufficient, so that the single transmission indication information cannot completely indicate the allocated resources.
  • the situation also reduces the load caused by a series of processes such as configuration, transmission, reception and parsing in the base station and the terminal, and improves the operating efficiency of the system.
  • part of the bits in the resource indication information are used to indicate the group in which the allocated resource allocation unit is located, and all or part of the bits in the resource indication information except the partial bits are indicated in the group by way of a bitmap.
  • a bitmap it is convenient to indicate the location and number of allocated resource allocation units.
  • the intersection of the two groups means that at least one of the same resource allocation units exists in the two groups, for example, i ⁇ j exists, where l ⁇ i ⁇ j ⁇ K, at least one of the same resource allocation unit exists in the i-th group and the j-th group; or, any two groups do not intersect, wherein the two groups do not intersect, and there is no identical one in any two groups
  • the resource allocation unit for example, for any i ⁇ j , l ⁇ i ⁇ j ⁇ K, the i-th group and the j-th group do not have the same resource allocation unit.
  • Step S405 The base station expands the number of bits occupied by the resource indication information to B*P by means of carrying the resource indication information in the multiple resource allocation information units corresponding to the terminal, where B is the number of information units allocated for a plurality of resources.
  • B is the number of information units allocated for a plurality of resources.
  • each resource allocation information unit carries resource indication information, part of the bits are used to indicate one of all groups in which the resource allocation unit allocated for the terminal is located, and the resource indication information is except for some bits.
  • All or part of the bits indicate, by way of a bitmap, a resource allocation unit allocated to the terminal in a group indicated above.
  • all or part of the bits of the extended resource indication information indicate, by means of a bitmap, a resource allocation unit allocated by the base station to the terminal in the resource allocation unit.
  • the resource indication information is simultaneously distributed in one or more resource allocation information units for the terminal, wherein the plurality of resource allocation information units may occupy logically consecutive physical resources. This method is applicable to the case where the number of logical resource units to be indicated is large or the number of allocated resource allocation units is large, and all allocated resources can be sufficiently indicated.
  • the number of the resource allocation information units may be preset by the system and known by the base station and the terminal, or an information field may be added to the resource allocation information unit to carry information for indicating the quantity, or The number may be indicated by a masked cyclic redundancy check bit. Specifically, in the process of generating the cyclic redundancy check bit, the specific identifier corresponding to the quantity is used as a mask with the initial cyclic redundancy check bit. code, After receiving the masked cyclic redundancy check bit, the terminal performs decoding, and can successfully decode the mask value corresponding to the quantity, corresponding to the number of resource allocation information units known by the base station and the terminal corresponding to the specific identifier.
  • the terminal can obtain the number of resource allocation information units.
  • the resource indication information indicates, by means of a bitmap, a resource allocation unit allocated by the base station to the terminal in the M resource allocation units, where the value of the bit in the bitmap is used to indicate whether the resource allocation unit corresponding to the bit is allocated.
  • the terminal By means of a bitmap, it is convenient to indicate the location and number of allocated resource allocation units.
  • the number of allocated resource allocation units is fixed, or the system is pre-calculated (but the calculation process does not consider the size of P), The number may be less than or even much less than the P value. At this time, part of the bits occupied by the resource indication information does not indicate any resource allocation unit, which causes waste of resource indication information. Meanwhile, since the resource allocation unit must be indicated in units of the resource allocation unit, if each resource The allocation unit contains a large number of logical resource units, and the flexibility of resource indication is bound to decrease.
  • the method improves the utilization efficiency of the resource indication information by refining the resource allocation unit, and improves the flexibility of resource allocation and indication.
  • the base station may divide the logical resource unit into M resource allocation units, that is, each resource allocation unit has the same number of logical resource units N, and N may be the maximum resource allocation granularity supported by the base station ( The process is generally limited by the embodiment of the present invention.
  • the process of dividing the M resource allocation units into A resource allocation subunits by the base station includes:
  • the division process can be followed In a split manner, at this time, each of the above 2*(PM) resource allocation subunits has N/2 logical resource units, and each of the remaining 2M-P resource allocation subunits
  • the resource allocation sub-unit has N logical resource units; the partitioning process may also be divided according to the method of the equalization, which is not limited by the embodiment of the present invention.
  • the implementation of process (2) may include, but is not limited to, the following step-by-step refinement or unified refinement method:
  • N or N/(2n) is the minimum resource allocation granularity supported by the base station, it is not necessary to perform the further subdivision process of the resource allocation unit again, that is, to exit the above process, wherein the minimum resource allocation granularity may include one or more consecutive Logical resource unit, generally, the minimum resource allocation granularity is determined by the number of subbands or the number of consecutive logical resource units.
  • the unified refinement can divide the resource allocation sub-units at one time, and the selection manner of n P is not limited.
  • the logical resource units may be equally divided into M resource allocation units, or may not be divided into M resource allocation units according to an average manner, that is, logic included in the M resource allocation units.
  • the method may be not limited to the above, for example, a method of randomly extracting a part of logical resource units from all resource allocation units including the number of logical resource units of 2 or more, and dividing into new resource allocation subunits. If the resource allocation process is sufficiently large, the probability that each logical resource unit is allocated is almost the same.
  • the resource indication information may indicate, by means of a bitmap, a resource allocation sub-unit allocated by the base station to the terminal in the A resource allocation sub-units, where the value of the bit in the bitmap is used to indicate whether the resource allocation sub-unit corresponding to the bit is Assigned to the terminal.
  • the location and number of allocated resource allocation subunits can be conveniently indicated by means of a bitmap.
  • the above consecutive logical resource units can be sub-band-based continuous logical resource units, where Each subband in the subband contains one or more consecutive resource elements.
  • the number or the number of subbands may be indicated by a broadcast control channel or by resource mapping information in a superframe header.
  • the resource indication information occupies a fixed binary bit, or the number of bits occupied by the resource indication information is at least due to the following factors: A determination: system bandwidth, number of consecutive logical resource units, resource allocation information unit type.
  • the above M can be set to the maximum resource allocation granularity supported by the base station.
  • the embodiment of the present invention further provides another method for indicating resource allocation. FIG.
  • Step S401 The base station allocates, to the terminal, a logical resource unit in a specified number of subbands, where a part of the logical resource units in the subbands at the predetermined position in the specified number of subbands are allocated, and all logical resource units in the subbands in other locations are allocated.
  • Step S403 The base station sends the resource indication information to the terminal, where the resource indication information carries the following information: an index value used to indicate a combination of the number of the specified number of subbands, and information of the partial logical resource unit.
  • the number of bits of the resource indication information may be insufficient, and the number of bits occupied by the resource indication information may be saved by using the index value to indicate the allocated multiple sub-bands.
  • the terminal may search for the corresponding number of the specified number of sub-bands according to the index value by searching for the correspondence between the pre-stored value of the cable I and the number of the specified number of sub-bands; or A method for generating an index value, generating an index value corresponding to a combination of numbers of all the specified number of sub-bands, and then finding a number corresponding to the specified number of sub-bands; or, performing a decoding algorithm corresponding to the method for generating the index value The number of the specified number of sub-bands corresponding to the cable I value is obtained.
  • the resource indication information may further carry location information indicating a location of the subband where the partial logical resource unit is located, where the predetermined location may include: a location preset by the system or a location indicated by the location information carried by the resource indication information.
  • the above index value RIF can be obtained by the following formula:
  • the resource indication information may be further carried to indicate a specified number of information.
  • the information may not be carried, but the system sets a fixed number of indications. The number of indications is known to both the base station and the terminal.
  • the information of the partial logical resource unit indicates the location of the partial logical resource unit by means of a bitmap, or the information of the partial logical resource unit indicates the partial logic by carrying an index value for indicating the location combination of the partial logical resource unit.
  • FIG. 5 is a schematic diagram of a resource mapping process according to a preferred example of the embodiment of the present invention. As shown in FIG. 5, L logical resource units are finally obtained. There is one frequency partition, that is, FP, among the above L logical resource units. .
  • FIG. 6 is a schematic diagram of resource element index coding and indication of 12 SLRUs according to a preferred example 1 of the embodiment of the present invention. As shown in FIG. 6, the number of bits indicating the resource index (ie, the resource indication information is occupied).
  • the number of bits is 11 , and 11 bits are taken as an example here, and the maximum resource allocation granularity supported by the base station is 4 consecutive logical resource units, and the minimum resource allocation granularity is 1 consecutive logical resource units, but is not limited. With this. Assume that the index of 12 consecutive logical resource units is [SLRU 0 , SLRUi , SLRU 2 , ...,
  • the three resource allocation units are further divided into six resources.
  • the source allocation subunits (Bo, Bi, B 2 , B 3 , B 4 , B 5 ), J3 ⁇ 4, each of the six resource allocation subunits has two consecutive logical resource units, as shown in the figure Shown in 6b.
  • resource allocation subunits (B l B 3 , B 5 ) in the above 6 resource allocation subunits are calculated. Further divided into six resource allocation sub-units (d, C 2 , C 4 , C 5 , C 7 , C 8 ), in which case each of the six resource allocation sub-units has one continuous Logical resource unit, as shown in Figure 6c.
  • the final resource allocation subunit is divided into: C. Including [SLRU Q , SLRUi] , Ci includes [SLRU 2 ] , ..., C 8 includes [SLRU U ].
  • 11 bits are [000, 0001, 0111], it indicates that the resource allocation size is 5 consecutive logical resource units, and the location is allocated for resource allocation sub-units C Q , d, C 2 and C 4 , ie, consecutive
  • the logical resource units [SLRU 0 , SLRUi , SLRU 2 , SLRU 3 , SLRU 6 ] are assigned.
  • the resource indication information is all 11 bits, but only 9 bits are used, and the rest are reserved bits.
  • FIG. 7 is a schematic diagram of resource element index coding and indication of 32 SLRUs according to a preferred example 2 of the embodiment of the present invention. As shown in FIG.
  • the number of bits indicating the resource index is 11, where 11 bits are used.
  • the maximum resource allocation granularity supported by the base station is 4 consecutive logical resource units, and the minimum resource allocation granularity is 2 consecutive logical resource units, but is not limited thereto.
  • resource allocation units (A., Ai, A 2 ) of the above 8 resource allocation units are calculated. Further divided into six resource allocation sub-units (B., Bi, B 2 , B 3 , B 4 , B 5 ), in which case each of the six resource allocation sub-units has two consecutive Logical resource unit, as shown in Figure 7b.
  • BQ includes [SLRU Q , SLRUi]
  • Bi includes [SLRU 2 , SLRU 3 ]
  • B 2 includes [SLRU 4 , SLRU 5 ]
  • B 3 includes [SLRU 6 , SLRU 7 ]
  • B 4 includes [SLRU 8 , SLRU 9 ]
  • B 5 includes [SLRU 1() , SLRUn]
  • B 6 includes [SLRU 12 , SLRU 13 , SLRU14, SLRUi 5 ], ...
  • B 10 includes [SLRU 28] , SLRU 29 , SLRU 30 , SLRU 31 ].
  • All of the resource indication information is 11 bits, and 11 bits indicate the resource allocation sub-unit allocated to the terminal in the manner of Bitmap, that is, Bit i is used to indicate the resource allocation sub-unit, but is not limited thereto.
  • Bit 0 indicates the resource allocation sub-unit BQ
  • Bit 8 indicates the resource allocation sub-unit B 8 .
  • the 11 bits are [000, 0100, 0011], it indicates that the size of the resource allocation is 8 consecutive logical resource units, and the location is allocated for the resource allocation subunits B Q , 8 1 and 8 6 , that is, continuous recurring Resource unit [SLRU. , SLRUi, SLRU 2 , SLRU 3 , SLRU 12 , SLRU 13 , SLRU 14 , SLRU 15 ] were assigned.
  • the method for selecting three resource allocation units is not limited to the method in the example, that is, any three resource allocation units may be selected for further division; For example, A 3 , A 5 , and A 7 can be selected as the selected three resource allocation units.
  • FIG. 8 is a schematic diagram of resource element index coding and indication of 64 SLRUs according to a preferred example 3 of the embodiment of the present invention.
  • the number of bits indicating the resource index is 11, where 11 bits are used.
  • the maximum resource allocation granularity and the minimum resource allocation granularity supported by the base station are four consecutive logical resource units, but are not limited thereto.
  • Group 2 also includes 10 resource allocation units (A 6 , A 7 , ..., A 15 ), and the same resource allocation unit exists in the two groups, namely resources Distribution units A 6 , A 7 , A 8 and A 9 .
  • A. Includes [SLRU. , SLRUi, SLRU 2 , SLRU 3 ]
  • Ai includes [SLRU 4 , SLRU 5 ,
  • Bit 0 indicates resource allocation unit A.
  • a 6 If 11 bits are [000, 0100, 0011], it indicates that the resource allocation size is 12 consecutive reclaimed resource units, and the location is resource allocation unit A.
  • Ai and A 6 are assigned, ie consecutive logical resource units [SLRU 0 , SLRUi, SLRU 2 , SLRU 3 , SLRU 4 , SLRU 5 , SLRU 6 , SLRUy , SLRU 24 , SLRU 25 , SLRU 26 , SLRU 27 ] Be separated.
  • the method of dividing the 16 resource allocation units shown in FIG. 8 into two groups is not limited to the method in the example, that is, any 10 resource allocation units may be selected as the group 1 or group 2; for example, Can be A. , AI, A 2 , A 3 , A 4 , A 6 , A 8 , A 10 , A 12 , A 14 as group 1 or group 2.
  • FIG. 9 is a schematic diagram of resource element index coding and indication of 84 SLRUs according to a preferred example 4 of the embodiment of the present invention.
  • the number of bits indicating the resource index is 11, where 11 bits are used.
  • the maximum resource allocation granularity and the minimum resource allocation granularity supported by the base station are four consecutive logical resource units, but are not limited thereto.
  • group 1 3 groups
  • group 2 also includes 10 resource allocation units (A 1 (), An , ..., A 19 )
  • group 3 includes only one resource allocation unit (A 20 ) 0 where A 0 includes [SLRU 0 , SLRUi , SLRU 2 , SLRU 3 ], Ai includes [SLRU 4 , SLRU 5 , SLRU 6 , SLRU 7 ], with jt ⁇ 4 dance,
  • a 20 includes [SLRU 80 , SLRU 81 , SLRU 82 , SLRU 83 ].
  • All of the resource indication information is still 11 bits, but one of the bits, such as Bit 10, is used to indicate which of the group 1 and group 2 the resource index code (Bit 0 to Bit 9) used corresponds to.
  • Bit 0 indicates the resource allocation unit A Q or A 1Q . If the 11 bits are [000, 0100, 0011], it indicates that the size of the resource allocation is 12 consecutive reclaimed resource units, and the location is the resource allocation unit A Q , ⁇ 6 is allocated, that is, consecutive logical resource units [SLRU 0 , SLRUi , SLRU 2 , SLRU 3 , SLRU 4 , SLRU 5 , SLRU 6 , SLRUy , SLRU 24 , SLRU 25 , SLRU 26 , SLRU 27 ] are allocated.
  • FIG. 10a is a schematic diagram of resource element index coding and indication of 64 SLRUs according to a preferred example 5 of the embodiment of the present invention. As shown in FIG. 10a, resource index information indication in two resource allocation information units is used.
  • the maximum resource allocation granularity and the minimum resource allocation granularity supported by the base station are four consecutive logical resource units, but are not limited thereto.
  • the resource index information in the two resource allocation information units can be used together to indicate the resource allocation unit allocated for the terminal.
  • a 0 includes [SLRU 0 , SLRUi , SLRU 2 , SLRU 3 ]
  • Ai includes [SLRU 4 , SLRU 5 , SLRU 6 , SLRU 7 ]
  • a 15 includes [SLRU 60 , SLRU 61 , SLRU 62 , SLRU 63 ].
  • the resource indication information is all 22 bits, and the 22 bits indicate the resource allocation unit allocated to the terminal in a Bitmap manner, that is, Bit i is used to indicate the resource allocation unit A or does not indicate any resource allocation unit, but is not limited thereto.
  • Bit 0 indicates the resource allocation unit AQ
  • Bit 8 indicates the resource allocation unit A 8
  • Bit 20 does not indicate any resource division unit.
  • the mouth 22 22 is [00, 0000, 0000, 0001, 0000, 0011], and the shell 'J indicates that the size of the resource allocation is 12 consecutive logical resource units, and the location is the resource allocation unit A Q , and A 8 Assigned, that is, consecutive logical resource units [SLRU 0 , SLRl ⁇ , SLRU 2 , SLRU 3 , SLRU 4 , SLRU 5 , SLRU 6 , SLRUy , SLRU 32 , SLRU33 , SLRU34 , SLRU 35 ] are allocated.
  • FIG. 10b is a schematic diagram of resource element index coding and indication of 64 SLRUs according to a preferred example 6 of the embodiment of the present invention.
  • the resource indication information indication in two resource allocation information units is used.
  • a resource allocation unit allocated to the terminal, but the two resource index information in the two resource allocation information units are not a resource allocation unit allocated to the terminal in a combined form, but are respectively independently indicating the part allocated for the terminal.
  • the resource allocation unit, the resource allocation unit finally allocated to the terminal is a combination of the resource allocation units of the part indicated by the two resource index information. It is assumed that the number of bits of the resource index information in each resource allocation information unit is 12, and 12 is used as an example here, but is not limited thereto.
  • each allocation unit contains 4 consecutive logical resource units, that is, in this example, the sub-band is used as the resource allocation granularity.
  • a 0 includes [SLRU 0 , SLRUi , SLRU 2 , SLRU 3 ], Ai includes [SLRU 4 , SLRU 5 , SLRU 6 , SLRU 7 ] , dances with jt ⁇ 4, A 15 includes [SLRU 60 , SLRU 61 , SLRU 62 , SLRU 63 ].
  • Bit i is used to indicate the resource allocation unit Ai or A i+5 , but is not limited thereto.
  • BitO indicates the resource allocation unit AQ or A 5 . If the 12 bits of the resource indication information in the first resource allocation information unit are [0000, 0100, 0011], it indicates that the size of the resource allocation is 12 consecutive reclaimed resource units, and the location is the resource allocation unit in the group 1. A.
  • a 6 are allocated; meanwhile, the 12 bits of the resource indication information in the second resource allocation information unit are [1101, 0000, 0000], indicating that the size of the resource allocation is 8 consecutive logical resource units, the location
  • the resource allocation units A 13 and A 15 in group 2 are assigned; the resource allocation unit finally assigned to the terminal is A. , Ai, A 6 , Ai5, the corresponding continuous logical resource unit [SLRU.
  • FIG. 11 is a schematic diagram of resource element index coding and indication of 16 SLRUs according to a preferred example 7 of the embodiment of the present invention.
  • the number of bits indicating the resource index is 12, where 12 bits are used.
  • the maximum resource allocation granularity supported by the base station is 4 consecutive logical resource units, and the minimum resource allocation granularity is 1 consecutive logical resource units, but is not limited thereto.
  • each allocation unit contains 4 consecutive reclaimed resource units, as shown in Figure 11a Show.
  • each of the above 8 resource allocation sub-units has 1 A continuous logical resource unit, as shown in Figure 11c.
  • the final resource allocation subunit is divided into: C. Including [SLRU Q , SLRUi], including [SLRU 2 ], ..., C u includes [SLRU 15 ].
  • FIG. 12 is a schematic diagram of resource element index coding and indication of 9 sub-bands according to a preferred example 8 of the embodiment of the present invention.
  • the number of bits indicating the resource index is 11, where 11 bits are used.
  • the 9 subbands are numbered [Subband 0 , Subband 1 , ..., Subband 8], and the corresponding consecutive logical resource unit numbers (a representation of the location) are [SLRU 0 , SLRUi, SLRU 2 , respectively. ..., SLRU 34 , SLRU 35 ], each subband contains 4 consecutive logical resource units.
  • one bit other than the above 11 bits in the resource allocation information unit may be used.
  • the currently used resource indexing method For example, in this example, 1 bit before the bit occupied by the resource indication information is used. When the 1 bit is "1", it means that the following resource indexing mode is used; otherwise, other indexing modes are used.
  • the highest bit (MSB) of the above 11 bits is used to indicate whether the current resource index is based on 2 sub-bands or 3 sub-bands (ie, whether the specified number is 2 or 3, where 2 and 3 are used as an example, However, it is not limited to this. If the bit is "0", it means that it is based on 2 sub-bands, otherwise it is based on 3 sub-bands.
  • the above bits are set to "0", indicating a resource index based on two subbands.
  • the consecutive 7 bits located after the MSB are used to indicate the index values corresponding to the two sub-bands.
  • the index value generation process is as follows (other index value generation methods may also be used, as long as the index value and the indicated sub-band number are guaranteed.
  • Combination - Correspondence Encode the number of these 2 subbands from the 9 subbands, RIF.
  • the indices M and v represent the numbers of the selected two sub-bands, indicating the index values corresponding to the above two sub-bands.
  • M the index value
  • v the index value
  • the base station or the terminal may perform a table lookup, or perform a coding algorithm or decoding corresponding to the above coding algorithm.
  • the algorithm obtains two subband numbers corresponding to the index value.
  • an index table may be directly constructed, and the table has at least one entry, and the generation of the entry is not based on the foregoing process; at this time, the base station or the terminal can only pass the table lookup manner.
  • the two subband numbers corresponding to the index values of the two subbands.
  • the first subband of the two subbands is all allocated, in this case, Subband 2
  • the allocated logical resource unit selected in the second subband is determined by the last 3 bits, that is, the last 3
  • the bit is used to indicate the continuous logic resources allocated in the second subband of the above two subbands.
  • the source unit in this example, is Subband4, and the logical resource unit indication method is as shown in FIG.
  • FIG. 13 is a schematic diagram of resource element index coding and indication of 9 sub-bands according to a preferred example 9 of the embodiment of the present invention. As shown in FIG. 13, the number of bits indicating the resource index is 11, where 11 bits are used. For example, it is not limited to this. Assume that the 9 subbands are numbered [Subband 0 , Subband 1 , ..., Subband 8], respectively. , SLRUi, SLRU:
  • each subband contains 4 consecutive logical resource units.
  • one bit other than the above 11 bits in the resource allocation information unit may be used to indicate the currently used resource indexing mode.
  • the first bit before the bit occupied by the resource indication information is used.
  • the 1 bit is "1”
  • the highest bit (MSB) of the above 11 bits is used to indicate whether the current resource index is based on 2 sub-bands or 3 sub-bands (ie, whether the specified number is 2 or 3, where 2 and 3 are used as an example, However, it is not limited to this.
  • the bit is "0", it means that it is based on 2 sub-bands, otherwise it is based on 3 sub-bands.
  • the above bit is set to "1", indicating a resource index based on 3 subbands.
  • the consecutive 8 bits located after the MSB are used to indicate the index values corresponding to the above 3 sub-bands.
  • the index value generation process is as follows: 3 sub-bands are arbitrarily selected from 9 sub-bands, and the numbers of the three sub-bands are performed by the following formula. coding,
  • the indices v and w represent the numbers of the selected three sub-bands, indicating the index values corresponding to the above three sub-bands.
  • each entry describes a correspondence between the number of three subbands of the nine subbands and its index value; the base station or the terminal may obtain the corresponding decoding algorithm by searching the table or performing the above coding algorithm.
  • the three subband numbers corresponding to the index value may be directly constructed, and the table has at least one entry, and the generation of the entry is not based on the foregoing process; at this time, the base station or the terminal can only pass the table lookup manner. To obtain the three sub-band numbers corresponding to the index values of the three sub-bands.
  • the last 3 bits are used to indicate consecutive logical resource units allocated in a certain sub-band, and the indication method is as shown in FIG. 14, wherein FIG. 15a and FIG. 15b respectively indicate that two or three bits are used to indicate that they are located at a certain one.
  • "X" represents the selected assigned logical resource unit.
  • the first two sub-bands of the three sub-bands are all allocated, in this case, Subband l and Subband 2
  • the selected logical resource unit selected in the third sub-band is determined by the last 2 bits, that is, the last The 2 bits are used to indicate the consecutive logical resource units allocated in the third sub-band of the above three sub-bands, in this example, Subband 4.
  • the logical resource unit indication method is as shown in FIG. 15a, where "X" indicates The assigned logical resource unit is selected. That is, the final allocated resource unit number in this example is [SLRU 4 , SLRU 5 , SLRU 6 , SLRUy, SLRU 8 , SLRU 9 , SLRUio, SLRUn , SLRU17, SLRUig, SLRU 19 ].
  • FIG. 14 is a schematic diagram of resource element index coding and indication of 9 sub-bands according to a preferred example 10 of the embodiment of the present invention. As shown in FIG. 14, the number of bits indicating the resource index is 11, where 11 bits are used. For example, it is not limited to this.
  • each subband contains 4 consecutive logical resource units.
  • one bit other than the above 11 bits in the resource allocation information unit may be used. Indicates the currently used resource indexing method. For example, in this example, 1 bit before the bit occupied by the resource indication information is used. When the 1 bit is "1", it means that the following resource indexing mode is used; otherwise, other indexing modes are used.
  • the above 11 bits are used to indicate a resource index based on 2 subbands (i.e., the specified number is 2, here is 2, but not limited thereto).
  • the consecutive 7 MSB bits located in front are used to indicate the index values corresponding to the above 2 subbands.
  • the index value generation process is as follows (other index value generation methods may also be used, as long as the index value and the indicated subband number are guaranteed.
  • Combination - Correspondence: Encode the number of the 2 subbands from the 9 subbands, RIF .
  • the indices M and v represent the numbers of the selected two sub-bands, indicating the index values corresponding to the above two sub-bands.
  • M the index value
  • v the index value
  • the base station or the terminal may perform a table lookup, or perform a coding algorithm or decoding corresponding to the above coding algorithm.
  • the algorithm obtains two subband numbers corresponding to the index value.
  • an index table may be directly constructed, and the table has at least one entry, and the generation of the entry is not based on the foregoing process; at this time, the base station or the terminal can only pass the table lookup manner.
  • the last 3 bits are used to indicate the consecutive logical resource units allocated in the partially allocated subband, in this case Subband 4, logical resource unit
  • the indication method is shown in Figure 15b, In the middle, "X" indicates the selected logical resource unit to be allocated. That is, the logical resource unit number finally allocated in this example is [SLRU 8 , SLRU 9 , SLRU10, SLRUn , SLRUie, SLRU 17 ].
  • the foregoing embodiments are not limited to a specific system bandwidth, but various methods in the foregoing embodiments are used in combination according to the number of subbands or logical resource units indicated, for example, 16 consecutive
  • the resource unit which is 4 sub-bands, can correspond to a standard bandwidth or equivalent bandwidth of 5M, 10M or 20M (for example, using Tone Dropping technology;), or an irregular bandwidth of 8.75M, but under various bandwidths
  • the method of assigning resources is consistent.
  • the foregoing method and embodiment may be represented by an equivalent formula or a table or a legend. As long as the achieved logical resource unit or resource allocation unit has the same effect, it is regarded as an equivalent method and is not described.
  • the method provided by the foregoing embodiment has the advantages of low complexity, simple implementation, and wide resource indication range.
  • 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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Abstract

La présente invention concerne un procédé d'indication d'une affectation de ressources et une station de base associée. Le procédé comprend les étapes suivantes : la station de base divise les unités de ressource logiques en M unités d'affectation de ressources ; si M > P, la station de base divise les M unités d'affectation de ressources en K groupes, P correspondant au nombre de bits occupés par les informations d'indication de ressources, 1=< K < M ; la station de base envoie les informations d'indication de ressources à un terminal, lesdites informations d'indication de ressources indiquant les groupes où se trouvent les unités d'affectation de ressources affectées par la station de base pour le terminal et/ou les unités d'affectation de ressources affectées dans les groupes par la station de base pour le terminal. La présente invention présente un niveau de complexité moindre, une facilité de mise en œuvre, et une plage plus étendue d'indication des ressources.
PCT/CN2010/072815 2010-03-05 2010-05-14 Procédé d'indication d'une affectation de ressources et station de base associée Ceased WO2011106945A1 (fr)

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