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WO2011082630A1 - 中继链路物理下行共享信道的映射及资源分配方法和装置 - Google Patents

中继链路物理下行共享信道的映射及资源分配方法和装置 Download PDF

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Publication number
WO2011082630A1
WO2011082630A1 PCT/CN2010/080192 CN2010080192W WO2011082630A1 WO 2011082630 A1 WO2011082630 A1 WO 2011082630A1 CN 2010080192 W CN2010080192 W CN 2010080192W WO 2011082630 A1 WO2011082630 A1 WO 2011082630A1
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WO
WIPO (PCT)
Prior art keywords
pdsch
resource
resources
resource allocation
mapping
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PCT/CN2010/080192
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English (en)
French (fr)
Inventor
毕峰
杨瑾
袁明
梁枫
吴栓栓
姜静
Original Assignee
中兴通讯股份有限公司
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.)
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to JP2012547437A priority Critical patent/JP5493012B2/ja
Priority to BR112012016759-6A priority patent/BR112012016759B1/pt
Priority to KR1020127019452A priority patent/KR101429374B1/ko
Priority to RU2012133083/08A priority patent/RU2515548C2/ru
Priority to US13/258,369 priority patent/US9241324B2/en
Priority to MX2012007960A priority patent/MX2012007960A/es
Priority to EP10841973.0A priority patent/EP2512187B1/en
Publication of WO2011082630A1 publication Critical patent/WO2011082630A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0073—Allocation arrangements that take into account other cell interferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0067—Rate matching
    • H04L1/0068—Rate matching by puncturing
    • 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
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations

Definitions

  • the present invention relates to wireless mobile communications, and in particular, to a mapping and resource allocation method and apparatus for a Physical Link Shared Channel (R-PDSCH) of a relay link.
  • R-PDSCH Physical Link Shared Channel
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • IMT-Advanced International Mobile Telecommunication Advanced
  • OFDM Orthogonal Frequency Division Multiplexing
  • RB resource block
  • PRB physical resource block
  • the OFDM symbol in the slot (slot) has 12 or 24 subcarriers in the frequency domain, so 1 1 8 is composed of ⁇ x A ⁇ resource elements ( RE , Resource Element ), which represents 1 s l 0 t
  • the number of OFDM symbols within, ⁇ represents the number of consecutive subcarriers of the resource block in the frequency domain. That is, a resource block refers to all OFDM symbols occupying a number of subcarriers (for example, 12 subcarriers) in the frequency direction, occupying 1 slot in the time direction; a resource block pair refers to 2 slots in 1 subframe. Corresponding 1 pair of resource blocks (in the frame structure shown in FIG. 2, 1 radio frame includes 10 subframes, and each subframe includes 2 slots. When a normal cyclic prefix is used, 1 slot includes 7 OFDM symbols, when the extended cyclic prefix is extended, 1 slot includes 6 OFDM symbols).
  • resource block group is also defined in the system, that is, several resource blocks are consecutively one resource block group.
  • the size of a resource block group is determined by the system bandwidth, for example: System bandwidth is less than or equal to 10
  • the size of the resource block group is 1 resource block; for example: when the system bandwidth is 11 to 26 resource blocks, the size of the resource block group is 2 resource blocks; another example: system bandwidth 27 to 63 resource blocks
  • the size of the resource block group is three resource blocks; and when the system bandwidth is 64 to 110 resource blocks, the size of the resource block group is four resource blocks.
  • the LTE-A system adds a new link after the introduction of a relay node (RN, Relay Node).
  • RN Relay Node
  • the link between the evolved Node B (eNode-B) and the relay (relay) It is called a backhaul link or a backhaul link;
  • the link between the relay and the user equipment (UE, User Equipment) is called an access link;
  • the road is called a direct link.
  • TDM means: the R-PDCCH (Relay Link-Physical Downlink Control Channel) and the R-PDSCH are transmitted in different OFDM symbols;
  • FDM means: R-PDCCH and R-PDSCH are transmitted in different PRBs;
  • FDM+TDM means: R-PDCCH and R-PDSCH are transmitted in the same or different PRBs.
  • the physical downlink control channel includes at least downlink grant information (DL grant) and uplink grant information (UL grant).
  • DL grant downlink grant information
  • UL grant uplink grant information
  • the DL grant and the UL grant are carried in the first or the first two or the first three of the first slot.
  • the DL grant is carried on the OFDM symbol available in the first slot
  • the UL grant carries the OFDM symbol available in the second slot. Up, several resource blocks are occupied in the frequency direction, and the maximum frequency width occupies the entire system bandwidth.
  • no specific implementation scheme of the mapping and resource allocation method of the R-PDSCH is provided. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a R-PDSCH mapping and resource allocation method and apparatus, which can be well applied to a base station to relay node link, and can ensure backward compatibility (compatible with LTE system).
  • the problem of mapping and resource allocation of the physical downlink shared channel of the relay link can also be solved.
  • an aspect of the present invention provides an R-PDSCH mapping and resource allocation method, when a physical downlink control channel (R-PDCCH) of a relay link overlaps with resources allocated by an R-PDSCH,
  • the R-PDSCH does not map and transmit data on the overlapping resources in the allocated resources, or punctured the data to be sent on the overlapping resources of the R-PDSCH in the allocated resources;
  • the R-PDSCH maps and transmits data on all or part of the resources that the R-PDCCH does not occupy in the allocated resources; the receiving end receives data according to the R-PDSCH mapping method.
  • the R-PDSCH when only the downlink grant information (DL grant) of the R-PDCCH overlaps with the resource allocated by the R-PDSCH, the R-PDSCH does not map and send data on resources occupied by the DL grant, or is The data to be transmitted by the R-PDSCH on the resource occupied by the DL grant is punctured; the R-PDSCH maps and transmits data on all or part of resources that are not occupied by the DL grant in the allocated resources.
  • DL grant downlink grant information
  • the R-PDSCH when only the uplink grant information (UL grant) of the R-PDCCH overlaps with the resource allocated by the R-PDSCH, the R-PDSCH does not map and transmit data on the resource occupied by the UL grant, or is The R-PDSCH punctured the data to be sent on the resource occupied by the UL grant; the R-PDSCH maps and transmits data on all or part of the resources that are not occupied by the UL grant in the allocated resources.
  • the R-PDSCH is not on the resources occupied by the DL grant and the UL grant. Mapping and transmitting data, or puncturing data to be sent by the R-PDSCH on resources occupied by the DL grant and the UL grant; the R-PDSCH is not occupied by the DL grant and the UL grant in the allocated resources. Map and send data on all or part of the resource.
  • the R-PDSCH reuses a resource allocation manner corresponding to the shared channel in the LTE system or a resource allocation manner using a packet tree.
  • the resource allocation manner corresponding to the shared channel in the LTE system is specifically: a resource corresponding to any one of the resource allocation domains in the downlink control format delivered by the physical downlink control channel (PDCCH) of the base station to the terminal link Allocation.
  • PDCCH physical downlink control channel
  • the downlink control format includes: format 0, format 1/1 A/1B/1C/1D, format 2/2 A radical
  • the resource allocation of the R-PDSCH may be reused: a resource block allocation field and a frequency hopping resource allocation field in format 0; a resource allocation header field and a resource block allocation field in format 1/2/2A; format 1A/ A continuous or discrete virtual resource block allocation flag field and a resource block allocation field in 1B/1D; a resource block allocation field in format 1C.
  • the resource allocation manner of the packet tree is specifically: grouping a resource block or a resource block pair or a frequency resource, and performing tree resource allocation on the grouped resource, when the resource allocation mode is used
  • the number of bits in the location information is " 1 ⁇ ⁇ 2 + D / 2 " where "is the number of available packets,""1" means rounded up.
  • the shared channel is a base station to the terminal PDSCH.
  • the R-PDCCH overlaps with the resources allocated by the base station to the PDSCH of the R8 or R9 terminal link, the data to be sent by the PDSCH on the overlapping resources in the allocated resources is punctured;
  • the R-PDCCH overlaps with the resources allocated by the base station to the PDSCH of the R10 terminal link, the data is not mapped and transmitted on the overlapping resources in the allocated resources, or the PDSCH is allocated in the allocated resources.
  • An R-PDSCH mapping and resource allocation method includes:
  • the allocation of the R-PDSCH resources includes: the R-PDSCH reuses a resource allocation manner corresponding to a shared channel in the LTE system or a resource allocation manner using a packet tree;
  • the R-PDSCH does not map and transmit data on the overlapping resources of the allocated resources, or the R - PDSCH snoring data to be sent on resources overlapping in the allocated resources
  • Another aspect of the present invention provides an apparatus for mapping and resource allocation of an R-PDSCH, including: a mapping module, configured for R-PDSCH mapping, and a resource allocation module, configured for a shared channel in an R-PDSCH reuse LTE system The resource allocation method or the resource allocation method in the grouping tree.
  • mapping module is configured to map and send data on the R-PDSCH on all or part of resources that are not occupied by the DL grant and/or the UL grant in the allocated resources.
  • the resource allocation manner corresponding to the shared channel in the LTE system is specifically: a resource allocation manner corresponding to any one of the resource allocation domains in the downlink control format sent by the PDCCH of the base station to the terminal link.
  • the resource allocation module is configured to use a resource allocation manner of a packet tree, specifically: grouping resource blocks or resource block pairs or frequency resources, and performing tree resource allocation on the grouped resources,
  • the number of bits of the location information is ⁇ g 2 ⁇ 1 )/ 2 ) , where "is the number of available packets, indicating rounding up.
  • the method further includes: a avoidance module, configured to: when the R-PDCCH overlaps with the resource allocated by the R-PDSCH, the R-PDSCH does not map and send data on the overlapping resources in the allocated resource.
  • a avoidance module configured to: when the R-PDCCH overlaps with the resource allocated by the R-PDSCH, the R-PDSCH does not map and send data on the overlapping resources in the allocated resource.
  • the method further includes: a puncturing module, configured to be allocated when the R-PDCCH and the R-PDSCH are allocated When the resources overlap, the R-PDSCH punctured the data on the overlapping resources in the allocated resources.
  • a puncturing module configured to be allocated when the R-PDCCH and the R-PDSCH are allocated When the resources overlap, the R-PDSCH punctured the data on the overlapping resources in the allocated resources.
  • the avoidance module is further configured to: when the R-PDCCH overlaps with the resources allocated by the base station to the PDSCH of the R10 terminal link, not mapping and transmitting data on the overlapping resources in the allocated resources.
  • the puncturing module is further configured to: when the R-PDCCH overlaps with a resource allocated by a base station to a PDSCH of a R8 or R9 or R10 terminal link, the overlapping resources in the allocated resource of the PDSCH The data on the hole is punched.
  • the invention provides an R-PDSCH mapping and resource allocation method, which is well applied to a link from a base station to a relay node, and has flexible resource allocation mode and low signaling overhead, which ensures backward compatibility (compatible)
  • the LTE system also solves the problem of mapping and resource allocation of physical downlink shared channels of the relay link.
  • FIG. 1 is a schematic structural diagram of a conventional relay system
  • 2 is a schematic diagram of resource blocks and subcarriers
  • FIG. 3 is a schematic diagram of a TDM multiplexing manner for R-PDCCH and R-PDSCH;
  • FIG. 4 is a schematic diagram of an FDM multiplexing manner for R-PDCCH and R-PDSCH;
  • FIG. 5 is an R-PDCCH and an R-PDSCH application. Schematic diagram of FDM+TDM multiplexing mode;
  • Fig. 6 is a schematic diagram showing the structure of the apparatus of the present invention. detailed description
  • a resource block refers to all OFDM symbols occupying a plurality of subcarriers (for example, 12 subcarriers) in the frequency direction and occupying one slot in the time direction;
  • a resource block pair refers to a pair of resource blocks corresponding to two time slots in one subframe;
  • a frequency resource refers to occupying several subcarriers in a frequency direction (for example, 12 subcarriers) Wave), all OFDM symbols occupying a number of OFDM symbols, one slot or one subframe in the time direction, when occupying one slot or one OFDM symbol of all subframes in the time direction, the frequency resource and the resource block or Resource blocks are conceptually equivalent.
  • the basic idea of the present invention is: when the physical downlink control channel (R-PDCCH) of the relay link overlaps with the resource allocated by the R-PDSCH, the R-PDSCH does not map and transmit on the overlapping resources in the allocated resources. Data, or puncturing data to be transmitted on the allocated overlapping resources of the R-PDSCH; the R-PDSCH mapping on all or part of resources not occupied by the R-PDCCH in the allocated resources And transmitting data; the receiving end receives data according to the R-PDSCH mapping method.
  • R-PDCCH physical downlink control channel
  • the R-PDSCH When only the DL grant of the R-PDCCH overlaps with the resource allocated by the R-PDSCH, the R-PDSCH does not map and transmit data on the resource occupied by the DL grant, or the DL in the allocated resource. Mapping and transmitting data on all or part of the resources that are not occupied by the grant; when only the UL grant of the R-PDCCH overlaps with the resource allocated by the R-PDSCH, the R-PDSCH is not mapped and sent on the resource occupied by the UL grant Data, or puncturing data to be sent by the R-PDSCH on a resource occupied by the UL grant; the R-PDSCH mapping and transmitting data on all or part of resources that are not occupied by the UL grant in the allocated resource When the DL grant and the UL grant of the R-PDCCH overlap with the resources allocated by the R-PDSCH, the R-PDSCH does not map and transmit data on resources occupied by the DL grant and the UL grant, or The R-PDSCH performs puncturing on
  • the allocation of the R-PDSCH resource includes: a physical downlink shared channel (R-PDSCH) of the relay link, a resource allocation manner corresponding to the shared channel in the LTE system, or a resource allocation manner using a packet tree.
  • the R-PDSCH reuses the same resource allocation mode as the physical downlink shared channel of the base-to-terminal link in the LTE system or the resource allocation mode corresponding to the physical uplink shared channel, that is, the downlink control sent by the PDCCH from the base station to the terminal link.
  • the resource allocation method corresponding to any resource allocation domain in the format.
  • the downlink control format delivered by the PDCCH of the base station to the terminal link in the LTE system includes the format
  • resource allocation of R-PDSCH can be reused: resource block allocation domain and frequency hopping resource allocation domain in format 0 ( Resource block assignment and hopping resource allocation ), the uplink resource allocation is applied to the downlink resource allocation, and the parameters corresponding to the original uplink indicate the parameters corresponding to the downlink; the resource allocation header field and the resource block allocation in the format 1/2/2A Resource allocation header and Resource block assignment; contiguous/discrete virtual resource block allocation flag i or (Localized/Distributed VRB assignment flag and Resource block assignment) in format 1A/1B/1D; Resource block assignment in format 1C.
  • the R-PDSCH uses a resource-sharing manner of a packet-tree in the physical downlink sharing of the base-to-terminal link in the LTE system, and indicates a continuous resource block or a resource block pair or a frequency resource grouping position starting from any location. That is, the resource block or the resource block pair or the frequency resource is grouped first, and the grouped resource is allocated to the grouped resource.
  • the bit number of the position information is “1. g 2 ("'(" + l ) / l , where "is the number of available groups,"",” means rounding up.
  • FIG. 3 is a schematic diagram of T-multiplexing mode of R-PDCCH and R-PDSCH, as shown in FIG. 3, when R-PDSCH is used to carry R8 (Release 8 version) or R9 (Release 9 version). Or the R10 (Release 10 version) terminal data, the R-PDSCH is the PDSCH.
  • the base is The PDSCH that is connected to the R8 or R9 terminal link punctured the data on the resources overlapped in the allocated resources; when the R-PDCCH overlaps with the resources allocated by the PDSCH of the base station to the R10 terminal link, the PDSCH is used.
  • the evasive strategy refers to mapping and transmitting data on the overlapping resources that are not allocated by the shared channel corresponding to the R-PDCCH; the puncturing process refers to resource mapping according to the R-PDCCH-free, when the resources overlap The data to be transmitted on the overlapping resources is destroyed.
  • FIG. 4 is a schematic diagram of an R-PDCCH and an R-PDCCH for the R-PDCCH and the R-PDSCH.
  • the shared channel can be used to carry data of the R8 or R9 or R10 terminal or the RN.
  • two RNs are scheduled in the system, namely RN1 and RN2.
  • the resources allocated by the R-PDCCH and the PDSCH of the base station to the terminal link do not overlap at this time, so the PDSCH does not need to perform puncturing or avoiding operations.
  • the R-PDCCH corresponding to the RN1 occupies two slots in the sixth resource block pair.
  • the DL grant occupies the first slot
  • the UL grant occupies the second slot
  • the corresponding R-PDSCH is allocated. 1, 2, 3, 4, 5 (counting from the bottom of the figure to the top) 2 slots in the resource block pair.
  • the DL grant and the UL grant do not overlap with the resources allocated by the R-PDSCH, so the R-PDSCH of the RN1 does not need to perform puncturing or avoidance operations.
  • the R-PDCCH corresponding to the RN2 occupies two slots in the ninth and tenth resource block pairs, where the DL grant occupies the first slot, the UL grant occupies the second slot, and the corresponding R-PDSCH is allocated in the ninth slot. 2, 10, 12 resource block pairs of 2 slots.
  • the DL grant and the UL grant overlap with the resources allocated by the R-PDSCH in the 2 slots of the 9th and 10th resource block pairs, so the R-PDSCH of the RN2 uses the strategy of avoiding or playing. Hole handling.
  • the avoidance or punching process is referred to the first embodiment. Taking the avoidance as an example, at this time, the R-PDSCH does not map and transmit data on the 2 slots of the 9th and 10th resource block pairs, and maps on the 2 slots in the 11th and 12th resource block pairs. And send data.
  • FIG. 5 is an R-PDCCH and an R-PDSCH F FDM+TDM multiplexing method.
  • a schematic diagram assumes that four RNs are scheduled in the system at this time, namely RN1, RN2, RN3, and RN4.
  • the second, third, fourth, sixth, ninth, tenth, and twelveth resources are used.
  • the R-PDCCH included in the block pair is a control channel in which R-PDCCHs of 4 RNs are interleaved.
  • the R-PDCCH corresponding to the RN1 occupies the first slot of the 2nd, 3rd, 4th, 6th, 9th, 10th, and 12th resource block pair, and carries the DL grant, and the corresponding R-PDSCH is allocated in the 2nd, 3rd, and 4th. 6, 2, 10, 12 of the 2 resource block pairs.
  • the resources allocated by the DL grant and the R-PDSCH overlap on the first slot of the 2nd, 3rd, 4th, 6th, 9th, 10th, and 12th resource block pairs, so the R-PDSCH of RN1 ⁇ Use a strategy to avoid or perform punching.
  • the avoidance or punching process is referred to the first embodiment.
  • the R-PDSCH does not map and transmit data on the first slot of the 2nd, 3rd, 4th, 6th, 9th, 10th, and 12th resource block pairs, and the R-PDSCH is in the first 2, 3, 4, 6, 9, 10, 12 resource block pairs map and send data on the second slot.
  • the R-PDCCH corresponding to RN2, RN3, and RN4 occupies the first slot of the 2nd, 3rd, 4th, 6th, 9th, 10th, and 12th resource block pair, and carries the DL grant. It is assumed that the DL grant and RN2, RN3, and RN4 are at this time.
  • the resources allocated by the corresponding R-PDSCH do not overlap, so the R-PDSCH corresponding to RN2, RN3, and RN4 does not need to perform puncturing or avoiding operations.
  • FIG. 5 is a schematic diagram of an FDM+TDM multiplexing mode for R-PDCCH and R-PDSCH.
  • RN1, RN2, RN3, and RN4 the R-PDCCH corresponding to RN1 occupies the first slot of the second, third, and fourth resource block pairs.
  • the corresponding R-PDSCH is allocated to two slots in the first, second, third, and fourth resource block pairs.
  • the resources allocated by the DL grant and the R-PDSCH overlap on the first slot of the 2nd, 3rd, and 4th resource block pairs, so the R-PDSCH of the RN1 uses the strategy of avoiding or playing Hole handling.
  • the avoidance or punching process is referred to the first embodiment.
  • the R-PDSCH does not map and transmit data on the first slot of the 2nd, 3rd, and 4th resource block pairs, and the R-PDSCH is in the 2nd, 3rd, and 4th resource blocks.
  • Mapping and transmitting data on the second slot of the pair, and mapping and transmitting data on the two slots in the first resource block pair, that is, the DL grant is not allocated to the resource allocated by the R-PDSCH of the RN1. Map and send data on all available resources.
  • the R-PDCCH corresponding to the RN2 occupies the first slot of the sixth resource block pair, carries the DL grant, and the corresponding R-PDSCH is allocated to the two slots in the sixth resource block pair.
  • the resources allocated by the DL grant and the R-PDSCH overlap on the first slot in the sixth resource block pair, so the R-PDSCH of the RN2 uses the strategy of avoiding or performing the puncturing process.
  • the avoidance or punching process is referred to the first embodiment. Taking the avoidance as an example, at this time, the R-PDSCH does not map and transmit data on the first slot in the sixth resource block pair, and the R-PDSCH is on the second slot in the sixth resource block pair. Map and send data.
  • the R-PDCCH corresponding to the RN3 occupies the first slot of the ninth and tenth resource block pair, and carries the DL grant, and the corresponding R-PDSCH is allocated to the two slots of the eighth and eleven resource block pairs.
  • the DL grant does not overlap with the resources allocated by the R-PDSCH. Therefore, the R-PDSCH of the RN3 does not need to perform puncturing or avoidance operations.
  • the R-PDCCH corresponding to the RN4 occupies the first slot of the 12th resource block pair, and carries the DL grant, and the corresponding R-PDSCH is allocated to the two slots of the 12th, 13th, 14th, and 15th resource block pairs.
  • the resources allocated by the DL grant and the R-PDSCH are overlapped on the first slot of the 12th resource block pair, so the R-PDSCH of the RN4 uses the strategy of avoiding or performing the puncturing process.
  • the avoidance or punching process is referred to the first embodiment. Taking the avoidance as an example, the R-PDSCH does not map and transmit data on the first slot in the 12th resource block pair, and does not map and send data on the second slot in the 12th resource block pair.
  • mapping or transmitting a UL grant on the second slot of the 12th resource block pair maps and transmits data on the 2 slots of the 13th, 14th, and 15th resource block pairs, that is, Among the resources allocated by the R-PDSCH of the RN4, there is no part of the available resources occupied by the DL grant to map and transmit data.
  • the resource allocation mode of the packet tree is adopted, and according to the following table agreed by LTE, the table indicates the resource block grouping rule under different system bandwidth conditions, and the frequency direction includes 15 in this example.
  • the formula "1. ( 8 ⁇ ( 8 + 1) / ⁇ 6 , " ⁇ " means rounding up, this 6bits represents the consecutive resource block grouping positions at any position, the resource blocks or resource blocks within these groups Uniform bearing
  • an R-PDSCH resource allocation apparatus is further provided in the embodiment of the present invention. Since the principle of solving the problem is similar to the R-PDSCH resource allocation method, the implementation of the apparatus can refer to the implementation of the method. , the repetition will not be repeated.
  • FIG. 6 is a schematic structural diagram of a resource allocation apparatus of an R-PDSCH according to the present invention. As shown in FIG. 6, the method includes: a mapping and resource allocation module, configured for R-PDSCH mapping; and the R-PDSCH reuses a shared channel in an LTE system. The corresponding resource allocation method or the resource allocation method using the grouping tree.
  • the resource allocation manner corresponding to the shared channel in the LTE system is specifically: a resource allocation manner corresponding to any one of the resource allocation domains in the downlink control format sent by the PDCCH of the base station to the terminal link.
  • the resource allocation module is configured to use a resource allocation manner of a packet tree, specifically: grouping resource blocks or resource block pairs or frequency resources, performing tree resource allocation on the grouped resources, and using the resource allocation
  • the number of bits of the position information is " 1 ° 2 (" ⁇ (" + 1)/2 ) where "is the number of available packets, and ",” means rounding up.
  • the mapping and resource allocation module is specifically configured to: the R-PDSCH maps and sends data on all or part of resources that are not occupied by the DL grant and/or the UL grant in the allocated resources. More specifically:
  • the R-PDSCH When only the DL grant of the R-PDCCH overlaps with the resource allocated by the R-PDSCH, the R-PDSCH does not map and transmit data on the resource occupied by the DL grant, or the DL in the allocated resource. Mapping and transmitting data on all or part of the resources that are not occupied by the grant; when only the UL grant of the R-PDCCH overlaps with the resource allocated by the R-PDSCH, the R-PDSCH is not mapped and sent on the resource occupied by the UL grant Data, or puncturing data to be sent by the R-PDSCH on a resource occupied by the UL grant; the R-PDSCH mapping and transmitting data on all or part of resources that are not occupied by the UL grant in the allocated resource When the DL grant and the UL grant of the R-PDCCH overlap with the resources allocated by the R-PDSCH, the R-PDSCH does not map and transmit data on resources occupied by the DL grant and the UL grant, or The R-PDSCH performs puncturing on
  • the apparatus of the present invention further includes: a avoidance module, configured to: when the resources allocated by the R-PDCCH and the R-PDSCH overlap, the R-PDSCH does not map and send data on the overlapping resources in the allocated resources. .
  • the avoidance module is further configured to: when the R-PDCCH overlaps with the resources allocated by the base station to the PDSCH of the R10 terminal link, not mapping and transmitting data on the resources overlapped in the allocated resources.
  • the apparatus of the present invention further includes: a puncturing module, configured to: when the R-PDCCH overlaps with the resource allocated by the R-PDSCH, on the resource overlapped by the R-PDSCH in the allocated resource The data is punched.
  • the puncturing module is further configured to: when the R-PDCCH overlaps with the resource allocated by the PDSCH of the base station to the R8 or the R9 or the R10 terminal link, puncturing the data on the resource overlapped by the PDSCH in the allocated resource .

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Description

中继链路物理下行共享信道的映射及资源分配方法和装置 技术领域
本发明涉及无线移动通信， 尤其涉及一种中继链路的物理下行共享信 道（R-PDSCH, Relay link-Physical Downlink Shared Channel ) 的映射及资 源分配方法和装置。 背景技术
长期演进（LTE ) 系统、 高级长期演进（LTE-A ) 系统、 高级的国际移 动通信系统 ( IMT- Advanced , International Mobile Telecommunication Advanced ) 都是以正交频分复用 ( OFDM, Orthogonal Frequency Division Multiplexing )技术为基础。 在 OFDM系统中主要是时频两维的数据形式。 在 LTE、 LTE-A中， 资源块（RB, Resource Block; 当资源块映射在物理资 源上时， RB则称为物理资源块（PRB, Physical Resource Block ) )定义为在 时间域上连续 1个时隙（ slot )内的 OFDM符号 , 在频率域上连续 12或 24个子 载波， 所以 1个 1 8由^ x A^ 个资源单元（RE, Resource Element )组成， 其中 表示 1个 sl0t内的 OFDM符号的个数， ^ 表示资源块在频率域上连 续子载波的个数。 也就是说， 资源块是指在频率方向上占用若干个子载波 (例如 12个子载波），在时间方向上占用 1个时隙的全部 OFDM符号； 资源块 对是指 1个子帧中 2个时隙对应的 1对资源块（在如图 2所示的帧结构中， 1个 无线帧包括 10个子帧，每个子帧包括 2个时隙。正常循环前缀（ normal cyclic prefix )时， 1个 slot包括 7个 OFDM符号，扩展循环前缀（ extended cyclic prefix ) 时， 1个 slot包括 6个 OFDM符号）。
同时， 系统中还定义了资源块组的概念， 即连续若干个资源块为一个 资源块组。 资源块组的大小由系统带宽决定， 比如： 系统带宽小于等于 10 个资源块时， 资源块组的大小为 1资源块； 再如： 系统带宽 11〜26个资源块 时， 资源块组的大小为 2个资源块； 又如： 系统带宽 27〜63个资源块时， 资 源块组的大小为 3个资源块； 而系统带宽 64〜110个资源块时， 资源块组的大 小为 4个资源块等。
LTE-A系统， 在引入中继节点 （RN, Relay Node )后增加了新的链路， 如图 1所示， 演进型节点 B ( eNode-B )与中继（ relay )之间的链路称为回程 链路或中继链路 ( backhaul link ); relay与用户设备（UE, User Equipment ) 之间的链路称为接入链路（ access link ); eNode-B与 UE之间的链路称为直传 链路 ( direct link )„
目前， 在 LTE-A系统中对于引入中继节点后控制信道和业务信道之间 复用方式的研究是一个热点， 如釆用时分复用 （TDM , Time Division Multiplex ), 频分复用 （FDM, Frequency Division Multiplex ), FDM+TDM 方式进行复用，但针对 R-PDSCH的资源分配并没有展开研究， 而这正是该 发明要解决的问题。 具体的：
TDM 是指： 中继链路的物理下行控制信道 （ R-PDCCH , Relay link-Physical Downlink Control Channel ) 和 R-PDSCH 在不同的 OFDM symbols内发射；
FDM是指： R-PDCCH和 R-PDSCH在不同的 PRBs内发射；
FDM+TDM是指： R-PDCCH和 R-PDSCH在相同， 或者不同的 PRBs 内发射。
物理下行控制信道中至少包括下行授权信息 （DL grant ), 上行授权信 息（ UL grant ), 对于 PDCCH来说， DL grant和 UL grant承载在第 1个 slot 的前 1个或前 2个或前 3个或前 4个 OFDM符号上， 频率方向上占用全部 系统带宽； 对于 R-PDCCH来说， DL grant承载在第 1个 slot可用的 OFDM 符号上， UL grant承载在第 2个 slot可用的 OFDM符号上， 频率方向上占 用若干个资源块， 最大频率宽度占用全部系统带宽。 目前， 没有提供 R-PDSCH的映射及资源分配方法的具体实现方案。 发明内容
本发明所要解决的技术问题在于，提供一种 R-PDSCH的映射及资源分 配方法和装置， 可以很好地适用于基站到中继节点链路， 既能保证后向兼 容性（兼容 LTE系统 ), 也能解决中继链路的物理下行共享信道的映射及资 源分配的问题。
为了解决上述问题，本发明一方面提供了一种 R-PDSCH的映射及资源 分配方法， 当中继链路的物理下行控制信道（R-PDCCH ) 与 R-PDSCH所 分配的资源重叠时，所述 R-PDSCH不在所分配的资源中所述重叠的资源上 映射及发送数据，或是对所述 R-PDSCH在所分配的资源中所述重叠的资源 上待发送的数据进行打孔； 所述 R-PDSCH在所分配的资源中 R-PDCCH没 有占用的全部或部分资源上映射及发送数据；接收端根据所述 R-PDSCH映 射方法进行接收数据。
进一步地，当仅所述 R-PDCCH的下行授权信息（ DL grant )与 R-PDSCH 所分配的资源重叠时，所述 R-PDSCH不在 DL grant占用的资源上映射及发 送数据，或是对所述 R-PDSCH在 DL grant占用的资源上待发送的数据进行 打孔；所述 R-PDSCH在所分配的资源中 DL grant没有占用的全部或部分资 源上映射及发送数据。
进一步地，当仅所述 R-PDCCH的上行授权信息（ UL grant )与 R-PDSCH 所分配的资源重叠时，所述 R-PDSCH不在 UL grant占用的资源上映射及发 送数据，或是对所述 R-PDSCH在 UL grant占用的资源上待发送的数据进行 打孔；所述 R-PDSCH在所分配的资源中 UL grant没有占用的全部或部分资 源上映射及发送数据。
进一步地，当所述 R-PDCCH的 DL grant和 UL grant与 R-PDSCH所分 配的资源重叠时， 所述 R-PDSCH不在 DL grant和 UL grant占用的资源上 映射及发送数据 , 或是对所述 R-PDSCH在 DL grant和 UL grant占用的资 源上待发送的数据进行打孔； 所述 R-PDSCH在所分配的资源中 DL grant 和 UL grant没有占用的全部或部分资源上映射及发送数据。
进一步地， R-PDSCH重用 LTE系统中共享信道所对应的资源分配方式 或釆用分组树形的资源分配方式。
进一步地， 所述重用 LTE系统中共享信道所对应的资源分配方式具体 为： 基站到终端链路的物理下行控制信道（PDCCH ) 下发的下行控制格式 中的任何一种资源分配域对应的资源分配方式。
进一步地， 所述下行控制格式包括： format 0、 format 1/1 A/1B/1C/1D、 format 2/2 A„
进一步地， 所述 R-PDSCH的资源分配可以重用： format 0中的资源块 分配域和跳频资源分配域； format 1/2/2A 中的资源分配头域和资源块分配 域； format 1A/1B/1D中的连续或离散虚拟资源块分配标志域和资源块分配 域； format 1C中的资源块分配域。
进一步地， 所述釆用分组树形的资源分配方式， 具体为： 对资源块或 资源块对或频率资源分组， 对所述分组后的资源进行树形资源分配， 釆用 该资源分配方式时位置信息的比特数为「1ο§2 + D / 2) 其中"为可用的分 组数， "「 1" 表示向上取整。
进一步地， 当 R-PDSCH承载 R8或 R9或 R10终端的数据时， 所述共 享信道为基站到终端的 PDSCH。
进一步地，当 R-PDCCH与基站到 R8或 R9终端链路的 PDSCH所分配 的资源重叠时，则对所述 PDSCH在所分配的资源中所述重叠的资源上待发 送的数据进行打孔； 当 R-PDCCH与基站到 R10终端链路的 PDSCH所分配 的资源重叠时， 则不在所分配的资源中所述重叠的资源上映射及发送数据 , 或是对所述 PDSCH在所分配的资源中所述重叠的资源上待发送的数据进 行打孑
一种 R-PDSCH的映射及资源分配方法， 包括：
所述 R-PDSCH资源的分配包括：所述 R-PDSCH重用 LTE系统中共享 信道所对应的资源分配方式或釆用分组树形的资源分配方式；
在中继链路的物理下行控制信道 R-PDCCH与 R-PDSCH所分配的资源 重叠时， 所述 R-PDSCH 不在所分配的资源中重叠的资源上映射及发送数 据，或是对所述 R-PDSCH在所分配的资源中重叠的资源上待发送的数据进 行打孑
本发明另一方面还提供了一种 R-PDSCH 的映射及资源分配装置， 包 括： 映射模块， 用于 R-PDSCH映射； 资源分配模块， 用于 R-PDSCH重用 LTE 系统中共享信道所对应的资源分配方式或釆用分组树形的资源分配方 式。
进一步地， 所述映射模块用于所述 R-PDSCH在所分配的资源中 DL grant和 /或 UL grant没有占用的全部或部分资源上映射及发送数据。
进一步地， 所述重用 LTE 系统中共享信道所对应的资源分配方式具体 为：基站到终端链路的 PDCCH下发的下行控制格式中的任何一种资源分配 域对应的资源分配方式。
进一步地， 所述资源分配模块用于釆用分组树形的资源分配方式， 具 体为： 对资源块或资源块对或频率资源分组， 对所述分组后的资源进行树 形资源分配， 釆用该资源分配方式时位置信息的比特数为 ^g2 ^^1)/2) , 其中"为可用的分组数， 表示向上取整。
进一步地， 还包括： 躱避模块， 用于当 R-PDCCH与 R-PDSCH所分配 的资源重叠时， R-PDSCH不在所分配的资源中所述重叠的资源上映射及发 送数据。
进一步地， 还包括： 打孔模块， 用于当 R-PDCCH与 R-PDSCH所分配 的资源重叠时，对所述 R-PDSCH在所分配的资源中所述重叠的资源上的数 据进行打孔。
进一步地， 所述躱避模块还用于当 R-PDCCH与基站到 R10终端链路 的 PDSCH所分配的资源重叠时，不在所分配的资源中所述重叠的资源上映 射及发送数据。
进一步地，所述打孔模块还用于当 R-PDCCH与基站到 R8或 R9或 R10 终端链路的 PDSCH所分配的资源重叠时， 对所述 PDSCH在所分配的资源 中所述重叠的资源上的数据进行打孔。
通过本发明提供一种 R-PDSCH的映射及资源分配方法，很好地适用了 基站到中继节点的链路， 而且资源分配方式灵活， 信令开销低， 既保证了 后向兼容性（兼容 LTE系统 ), 也解决了中继链路的物理下行共享信道的映 射及资源分配的问题。 附图说明
图 1 是现有中继系统的组成结构示意图；
图 2 是资源块、 子载波的示意图；
图 3是 R-PDCCH和 R-PDSCH釆用 TDM复用方式的示意图； 图 4 是 R-PDCCH和 R-PDSCH釆用 FDM复用方式的示意图； 图 5 是 R-PDCCH和 R-PDSCH釆用 FDM+TDM复用方式的示意图； 图 6是本发明装置的组成结构示意图。 具体实施方式
为了说明问题， 这里引入几个相关的术语， 如图 2所示： 资源块是指 在频率方向上占用若干个子载波（例如 12个子载波）， 在时间方向上占用 一个时隙的全部 OFDM符号； 资源块对是指一个子帧中两个时隙对应的一 对资源块； 频率资源是指在频率方向上占用若干个子载波（例如 12个子载 波）， 在时间方向上占用若干个 OFDM符号、 一个时隙或一个子帧的全部 OFDM符号， 当在时间方向上占用一个时隙或一个子帧的全部 OFDM符号 时， 频率资源与资源块或资源块对概念等同。
本发明的基本思想是： 当中继链路的物理下行控制信道（R-PDCCH ) 与 R-PDSCH所分配的资源重叠时， 所述 R-PDSCH不在所分配的资源中重 叠的资源上映射及发送数据， 或者，对所述 R-PDSCH在所分配的重叠的资 源上待发送的数据进行打孔； 所述 R-PDSCH 在所分配的资源中的 R-PDCCH没有占用的全部或部分资源上映射及发送数据； 接收端根据所述 R-PDSCH映射方法进行接收数据。
具体地：
当仅所述 R-PDCCH的 DL grant与 R-PDSCH所分配的资源重叠时，所 述 R-PDSCH不在 DL grant占用的资源上映射及发送数据， 或者， 对所述 在所分配的资源中 DL grant没有占用的全部或部分资源上映射及发送数据； 当仅所述 R-PDCCH的 UL grant与 R-PDSCH所分配的资源重叠时，所 述 R-PDSCH不在 UL grant占用的资源上映射及发送数据， 或者， 对所述 R-PDSCH在 UL grant占用的资源上待发送的数据进行打孔；所述 R-PDSCH 在所分配的资源中 UL grant没有占用的全部或部分资源上映射及发送数据； 当所述 R-PDCCH的 DL grant和 UL grant, 与 R-PDSCH所分配的资源 重叠时， 所述 R-PDSCH不在 DL grant和 UL grant占用的资源上映射及发 送数据， 或者， 对所述 R-PDSCH在 DL grant和 UL grant占用的资源上待 发送的数据进行打孔； 所述 R-PDSCH在所分配的资源中 DL grant和 UL grant没有占用的全部或部分资源上映射及发送数据。
其中， R-PDSCH 资源的分配包括： 中继链路的物理下行共享信道 ( R-PDSCH )重用 LTE系统中共享信道所对应的资源分配方式或釆用分组 树形的资源分配方式。 具体地， R-PDSCH重用与 LTE系统中基站到终端链路的物理下行共享信道或是 物理上行共享信道所对应的资源分配方式相同的资源分配方式， 也就是基 站到终端链路的 PDCCH 下发的下行控制格式中的任何一种资源分配域对 应的资源分配方式。
LTE系统中基站到终端链路的 PDCCH下发的下行控制格式包括有格式
0 ( format 0 )、 format 1/lA/lB/lC/lD, format 2/2 A, 具体的， R-PDSCH的资 源分配可以重用： format 0中的资源块分配域和跳频资源分配域 ( Resource block assignment and hopping resource allocation ), 此时是将上行的资源分配 应用到下行资源分配， 原上行对应的参数表示下行对应的参数； format 1/2/2A中的资源分配头域和资源块分配域 ( Resource allocation header and Resource block assignment ); format 1A/1B/1D中的连续 /离散虚拟资源块分配 标志 i或和资源块分西己 i或 ( Localized/Distributed VRB assignment flag and Resource block assignment ); format 1C中的资源块分配域 ( Resource block assignment )。
具体地， R-PDSCH使用与 LTE系统中基站到终端链路的物理下行共享 釆用分组树形的资源分配方式， 表示任何位置起始的连续的资源块或资源 块对或频率资源分组位置， 即先对资源块或资源块对或频率资源分组， 对 分组后的资源进行树形资源分配， 釆用该资源分配方式时位置信息的比特 数为「l。g2 (" ' (" + l) / l , 其中"为可用的分组数， "「，" 表示向上取整。
下面结合附图和具体的实施例来进一步说明本发明的技术方案。
第一实施例，图 3是 R-PDCCH和 R-PDSCH釆用 TDM复用方式的示意图， 如图 3所示， 当 R-PDSCH用于承载 R8 ( Release 8 版本）或 R9 ( Release 9 版 本）或 R10 ( Release 10 版本）终端的数据时， R-PDSCH为 PDSCH, 此时， 当 R-PDCCH与基站到 R8或 R9终端链路的 PDSCH所分配的资源重叠时，对基 站到 R8或 R9终端链路的 PDSCH在所分配的资源中重叠的资源上的数据进 行打孔； 当 R-PDCCH与基站到 R10终端链路的 PDSCH所分配的资源重叠时， 则 PDSCH釆用躱避策略， 或是对所述 PDSCH在所分配的资源中重叠的资源 上的数据进行打孔。 其中， 躱避策略是指不在 R-PDCCH对应的共享信道所 分配的资源中所述重叠的资源上映射及发送数据； 打孔处理是指按照无 R-PDCCH进行资源映射， 当资源重叠时把重叠资源上原本待发射的数据打 掉。
第二实施例，图 4是 R-PDCCH和 R-PDSCH釆用 FDM复用方式的示意图， 如图 4所示，此时共享信道可用于承载 R8或 R9或 R10终端或 RN的数据。假设 此时系统中调度 2个 RN, 分别为 RN1、 RN2。 并假设， 此时 R-PDCCH与基 站到终端链路的 PDSCH所分配的资源不重叠， 所以 PDSCH不需要进行打孔 或躱避操作。
RN1对应的 R-PDCCH占用第 6个资源块对（resource block pair ) 中的 2 个 slot,其中 DL grant占用第 1个 slot, UL grant占用第 2个 slot,对应的 R-PDSCH 被分配在第 1、 2、 3、 4、 5个（从图的下方往上方计数）资源块对中的 2个 slot。 对于 RN1来说， DL grant和 UL grant与 R-PDSCH所分配的资源都不重叠， 所 以 RN1的 R-PDSCH不需要进行打孔或躱避操作。
RN2对应的 R-PDCCH占用第 9、 10个资源块对中的 2个 slot, 其中， DL grant占用第 1个 slot, UL grant占用第 2个 slot,对应的 R-PDSCH被分配在第 9、 10、 11、 12个资源块对中的 2个 slot。 对于 RN2来说， DL grant和 UL grant, 与 R-PDSCH所分配的资源在第 9、 10个资源块对中的 2个 slot重叠， 所以 RN2 的 R-PDSCH釆用躱避的策略或进行打孔处理。 躱避或打孔处理参照第一实 施例。 以躱避为例说明， 此时， R-PDSCH在第 9、 10个资源块对中的 2个 slot 上不映射及发送数据， 在第 11、 12个资源块对中的 2个 slot上映射及发送数 据。
第三实施例， 图 5是 R-PDCCH和 R-PDSCH釆用 FDM+TDM复用方式的 示意图， 假设此时系统中调度 4个 RN, 分别为 RN1、 RN2、 RN3、 RN4, 如 图 5所示，第三实施例中，第 2、 3、 4、 6、 9、 10、 12个资源块对内包含 R-PDCCH 是 4个 RN的 R-PDCCH交织在一起的控制信道。
RN1对应的 R-PDCCH占用第 2、 3、 4、 6、 9、 10、 12个资源块对的第 1 个 slot, 承载 DL grant, 对应的 R-PDSCH被分配在第 2、 3、 4、 6、 9、 10、 12 个资源块对中的 2个 slot。 对于 RN1来说， DL grant与 R-PDSCH所分配的资源 在第 2、 3、 4、 6、 9、 10、 12个资源块对中的第 1个 slot上重叠， 所以 RN1的 R-PDSCH釆用躱避的策略或进行打孔处理。 躱避或打孔处理参照第一实施 例。 以躱避为例说明， 此时， R-PDSCH在第 2、 3、 4、 6、 9、 10、 12个资源 块对中的第 1个 slot上不映射及发送数据， R-PDSCH在第 2、 3、 4、 6、 9、 10、 12个资源块对中的第 2个 slot上映射及发送数据。
RN2、 RN3、 RN4对应的 R-PDCCH占用第 2、 3、 4、 6、 9、 10、 12个资 源块对的第 1个 slot, 承载 DL grant, 假设此时 DL grant与 RN2、 RN3、 RN4 对应的 R-PDSCH所分配的资源不重叠， 所以 RN2、 RN3、 RN4对应的 R-PDSCH不需要进行打孔或躱避操作。
第四实施例， 图 5是 R-PDCCH和 R-PDSCH釆用 FDM+TDM复用方式的 示意图。 假设此时系统中调度 4个 RN, 分别为 RN1、 RN2、 RN3、 RN4, 如 图 5所示， RN1对应的 R-PDCCH占用第 2、 3、 4个资源块对的第 1个 slot, 承 载 DL grant,对应的 R-PDSCH被分配在第 1、 2、 3、 4个资源块对中的 2个 slot。 对于 RN1来说， DL grant与 R-PDSCH所分配的资源在第 2、 3、 4个资源块对 中的第 1个 slot上重叠， 所以 RN1的 R-PDSCH釆用躱避的策略或进行打孔处 理。 躱避或打孔处理参照第一实施例。 以躱避为例说明， 此时， R-PDSCH 在第 2、 3、 4个资源块对中的第 1个 slot上不映射及发送数据， R-PDSCH在第 2、 3、 4个资源块对中的第 2个 slot上映射及发送数据， 以及在第 1个资源块 对中的 2个 slot上映射及发送数据， 也就是说， RN1的 R-PDSCH所分配的资 源中没有被 DL grant占用的全部可用资源上映射及发送数据。 RN2对应的 R-PDCCH占用第 6个资源块对的第 1个 slot , 承载 DL grant , 对应的 R-PDSCH被分配在第 6个资源块对中的 2个 slot。 对于 RN2来说， DL grant与 R-PDSCH所分配的资源在第 6个资源块对中的第 1个 slot上重叠，所以 RN2的 R-PDSCH釆用躱避的策略或进行打孔处理。 躱避或打孔处理参照第 一实施例。 以躱避为例说明， 此时， R-PDSCH在第 6个资源块对中的第 1个 slot上不映射及发送数据， R-PDSCH在第 6个资源块对中的第 2个 slot上映射 及发送数据。
RN3对应的 R-PDCCH占用第 9、 10个资源块对的第 1个 slot , 承载 DL grant, 对应的 R-PDSCH被分配在第 8、 11个资源块对中的 2个 slot。 对于 RN3 来说， DL grant与 R-PDSCH所分配的资源不重叠， 所以 RN3的 R-PDSCH不 需要进行打孔或躱避操作。
RN4对应的 R-PDCCH占用第 12个资源块对的第 1个 slot, 承载 DL grant, 对应的 R-PDSCH被分配在第 12、 13、 14、 15个资源块对中的 2个 slot。 对于 RN4来说， DL grant与 R-PDSCH所分配的资源在第 12个资源块对中的第 1个 slot上重叠了， 所以 RN4的 R-PDSCH釆用躱避的策略或进行打孔处理。 躱避 或打孔处理参照第一实施例。 以躱避为例说明， 此时 R-PDSCH在第 12个资 源块对中的第 1个 slot上不映射及发送数据， 第 12个资源块对中的第 2个 slot 上不映射及发送数据， 或是第 12个资源块对中的第 2个 slot上映射及发送 UL grant, R-PDSCH在第 13、 14、 15个资源块对中的 2个 slot上映射及发送数据， 也就是说 RN4的 R-PDSCH所分配的资源中没有被 DL grant占用的部分可用 资源上映射及发送数据。
第五实施例，釆用分组树形的资源分配方式，根据 LTE达成一致的下表， 该表分别指示了不同的系统带宽条件下， 资源块分组规则， 本例子中在频 率方向上共包括 15个资源块， 根据表 1确定此时系统带宽属于 11〜26个资源 块区间， 资源块组的大小为 2个资源块， 分组数 " =「15/2>8 , 即共 8组； 釆用 公式「1。 (8· (8 + 1)/ Ί = 6 , "Π"表示向上取整， 这 6bits表示了任何位置起始 的连续的资源块分组位置， 这些分组内的资源块或资源块对均承载
R-PDSCH。
Figure imgf000014_0001
表 1
基于同一发明构思，本发明实施例中还提供了一种 R-PDSCH的资源分 配装置， 由于该装置解决问题的原理与 R-PDSCH资源分配的方法相似， 因 此该装置的实施可以参见方法的实施， 重复之处不再赘述。
图 6是本发明 R-PDSCH的资源分配装置的组成结构示意图， 如图 6 所示， 包括： 映射及资源分配模块， 用于 R-PDSCH映射； 所述 R-PDSCH 重用 LTE系统中共享信道所对应的资源分配方式或釆用分组树形的资源分 配方式。
所述重用 LTE系统中共享信道所对应的资源分配方式具体为： 基站到 终端链路的 PDCCH 下发的下行控制格式中的任何一种资源分配域对应的 资源分配方式。
所述资源分配模块用于釆用分组树形的资源分配方式， 具体为： 对资 源块或资源块对或频率资源分组， 对所述分组后的资源进行树形资源分配， 釆用该资源分配方式时位置信息的比特数为「1° 2(" · (" + 1)/2) 其中"为可用 的分组数， "「，" 表示向上取整。
所述映射及资源分配模块，具体用于所述 R-PDSCH在所分配的资源中 DL grant和 /或 UL grant没有占用的全部或部分资源上映射及发送数据。 更 具体地：
当仅所述 R-PDCCH的 DL grant与 R-PDSCH所分配的资源重叠时，所 述 R-PDSCH不在 DL grant占用的资源上映射及发送数据， 或者， 对所述 在所分配的资源中 DL grant没有占用的全部或部分资源上映射及发送数据； 当仅所述 R-PDCCH的 UL grant与 R-PDSCH所分配的资源重叠时，所 述 R-PDSCH不在 UL grant占用的资源上映射及发送数据， 或者， 对所述 R-PDSCH在 UL grant占用的资源上待发送的数据进行打孔；所述 R-PDSCH 在所分配的资源中 UL grant没有占用的全部或部分资源上映射及发送数据； 当所述 R-PDCCH的 DL grant和 UL grant、 与 R-PDSCH所分配的资源 重叠时， 所述 R-PDSCH不在 DL grant和 UL grant占用的资源上映射及发 送数据， 或者， 对所述 R-PDSCH在 DL grant和 UL grant占用的资源上待 发送的数据进行打孔； 所述 R-PDSCH在所分配的资源中 DL grant和 UL grant没有占用的全部或部分资源上映射及发送数据。
如图 6 所示， 本发明装置还包括： 躱避模块， 用于当 R-PDCCH 与 R-PDSCH所分配的资源重叠时， R-PDSCH不在所分配的资源中重叠的资 源上映射及发送数据。 躱避模块进一步用于， 当 R-PDCCH与基站到 R10 终端链路的 PDSCH所分配的资源重叠时，不在所分配的资源中重叠的资源 上映射及发送数据。
如图 6 所示， 本发明装置还包括： 打孔模块， 用于当 R-PDCCH 与 R-PDSCH所分配的资源重叠时， 对所述 R-PDSCH在所分配的资源中重叠 的资源上的数据进行打孔。 打孔模块进一步用于， 当 R-PDCCH与基站到 R8或 R9或 R10终端链路的 PDSCH所分配的资源重叠时， 对所述 PDSCH 在所分配的资源中重叠的资源上的数据进行打孔。
当然， 本发明还可有其他多种实施例， 在不背离本发明精神及其实质 变形， 但这些相应的改变和变形都应属于本发明所附的权利要求的保护范 围。

Claims

权利要求书
1、 一种中继链路的物理下行共享信道 R-PDSCH的映射及资源分配方 法， 其特征在于， 包括：
在中继链路的物理下行控制信道 R-PDCCH与 R-PDSCH所分配的资源 重叠时， 所述 R-PDSCH 不在所分配的资源中重叠的资源上映射及发送数 据，或是对所述 R-PDSCH在所分配的资源中重叠的资源上待发送的数据进 行打孑
2、 根据权利要求 1所述的映射及资源分配方法， 其特征在于， 当仅是 所述 R-PDCCH的下行授权信息 DL grant与 R-PDSCH所分配的资源重叠 时， 所述 R-PDSCH不在 DL grant占用的资源上映射及发送数据， 或者， 对 所述 R-PDSCH在 DL grant占用的资源上待发送的数据进行打孔；
所述 R-PDSCH在所分配的资源中 DL grant没有占用的全部或部分资源 上映射及发送数据。
3、 根据权利要求 1所述的映射及资源分配方法， 其特征在于， 当仅是 所述 R-PDCCH的上行授权信息 UL grant与 R-PDSCH所分配的资源重叠 时， 所述 R-PDSCH不在 UL grant占用的资源上映射及发送数据， 或者， 对 所述 R-PDSCH在 UL grant占用的资源上待发送的数据进行打孔；
所述 R-PDSCH在所分配的资源中 UL grant没有占用的全部或部分资源 上映射及发送数据。
4、 根据权利要求 1所述的映射及资源分配方法， 其特征在于， 当所述 R-PDCCH的 DL grant和 UL grant与 R-PDSCH所分配的资源重叠时， 所述 R-PDSCH不在 DL grant和 UL grant占用的资源上映射及发送数据， 或者， 对所述 R-PDSCH在 DL grant和 UL grant占用的资源上待发送的数据进行 打孔；
所述 R-PDSCH在所分配的资源中 DL grant和 UL grant没有占用的全 部或部分资源上映射及发送数据。
5、 根据权利要求 1 所述的映射及资源分配方法， 其特征在于， 所述 R-PDSCH资源的分配包括： 所述 R-PDSCH重用 LTE系统中共享信道所对 应的资源分配方式或釆用分组树形的资源分配方式。
6、 根据权利要求 5所述的映射及资源分配方法， 其特征在于， 所述重 用 LTE系统中共享信道所对应的资源分配方式具体为： 基站到终端链路的 物理下行控制信道 PDCCH 下发的下行控制格式中的任何一种资源分配域 对应的资源分配方式。
7、 根据权利要求 6所述的映射及资源分配方法， 其特征在于， 所述下 行控制格式包括： 格式 format 0、 format 1/1 A/1B/1C/1D、 format 2/2A。
8、 根据权利要求 7 所述的映射及资源分配方法， 其特征在于， 所述 R-PDSCH的资源分配重用： format 0中的资源块分配域和跳频资源分配域； 或 format 1/2/2A中的资源分配头域和资源块分配域；或 format 1A/1B/1D中 的连续或离散虚拟资源块分配标志域和资源块分配域； 或 format 1C中的资 源块分配域。
9、 根据权利要求 5所述的映射及资源分配方法， 其特征在于， 所述釆 用分组树形的资源分配方式， 具体为： 对资源块或资源块对或频率资源分 组， 对所述分组后的资源进行树形资源分配， 釆用该资源分配方式时位置 信息的比特数为 ^β^" · ^^ 1)/2) , 其中"为可用的分组数， "「1 " 表示向上 取整。
10、 根据权利要求 1 所述的映射及资源分配方法， 其特征在于， 当所 述 R-PDSCH承载 R8或 R9或 R10终端的数据时， 所述共享信道为基站到 终端的 PDSCH。
11、 根据权利要求 10所述的映射及资源分配方法， 其特征在于， 当所 述 R-PDCCH与基站到 R8或 R9终端链路的 PDSCH所分配的资源重叠时， 则对所述 PDSCH在所分配的资源中所述重叠的资源上待发送的数据进行 打孔；当 R-PDCCH与基站到 R10终端链路的 PDSCH所分配的资源重叠时， 则 PDSCH不在所分配的资源中所述重叠的资源上映射及发送数据， 或者， 对所述 PDSCH在所分配的资源中所述重叠的资源上待发送的数据进行打 孔。
12、 根据权利要求 1 所述的映射及资源分配方法， 其特征在于， 该方 法还包括： 接收端根据所述 R-PDSCH的映射方法接收数据。
13、一种中继链路的物理下行共享信道 R-PDSCH的映射及资源分配方 法， 其特征在于， 包括：
所述 R-PDSCH资源的分配包括：所述 R-PDSCH重用 LTE系统中共享 信道所对应的资源分配方式或釆用分组树形的资源分配方式；
在中继链路的物理下行控制信道 R-PDCCH与 R-PDSCH所分配的资源 重叠时， 所述 R-PDSCH 不在所分配的资源中重叠的资源上映射及发送数 据，或是对所述 R-PDSCH在所分配的资源中重叠的资源上待发送的数据进 行打孑
14、 根据权利要求 13所述的映射及资源分配方法， 其特征在于， 当仅 是所述 R-PDCCH的下行授权信息 DL grant与 R-PDSCH所分配的资源重叠 时， 所述 R-PDSCH不在 DL grant占用的资源上映射及发送数据， 或者， 对 所述 R-PDSCH在 DL grant占用的资源上待发送的数据进行打孔；
所述 R-PDSCH在所分配的资源中 DL grant没有占用的全部或部分资源 上映射及发送数据。
15、 根据权利要求 13所述的映射及资源分配方法， 其特征在于， 当仅 是所述 R-PDCCH的上行授权信息 UL grant与 R-PDSCH所分配的资源重叠 时， 所述 R-PDSCH不在 UL grant占用的资源上映射及发送数据， 或者， 对 所述 R-PDSCH在 UL grant占用的资源上待发送的数据进行打孔；
所述 R-PDSCH在所分配的资源中 UL grant没有占用的全部或部分资源 上映射及发送数据。
16、 根据权利要求 13所述的映射及资源分配方法， 其特征在于， 当所 述 R-PDCCH的 DL grant和 UL grant与 R-PDSCH所分配的资源重叠时，所 述 R-PDSCH不在 DL grant和 UL grant占用的资源上映射及发送数据， 或 者， 对所述 R-PDSCH在 DL grant和 UL grant占用的资源上待发送的数据 进行打孑
所述 R-PDSCH在所分配的资源中 DL grant和 UL grant没有占用的全 部或部分资源上映射及发送数据。
17、 根据权利要求 13所述的映射及资源分配方法， 其特征在于， 所述 重用 LTE系统中共享信道所对应的资源分配方式具体为： 基站到终端链路 的物理下行控制信道 PDCCH 下发的下行控制格式中的任何一种资源分配 域对应的资源分配方式。
18、 根据权利要求 17所述的映射及资源分配方法， 其特征在于， 所述 下行控制格式包括： 格式 format 0、 format 1/lA/lB/lC/lD, format 2/2A。
19、 根据权利要求 18所述的映射及资源分配方法， 其特征在于， 所述 R-PDSCH的资源分配重用： format 0中的资源块分配域和跳频资源分配域； 或 format 1/2/2A中的资源分配头域和资源块分配域；或 format 1A/1B/1D中 的连续或离散虚拟资源块分配标志域和资源块分配域； 或 format 1C中的资 源块分配域。
20、 根据权利要求 13所述的映射及资源分配方法， 其特征在于， 所述 釆用分组树形的资源分配方式， 具体为： 对资源块或资源块对或频率资源 分组， 对所述分组后的资源进行树形资源分配， 釆用该资源分配方式时位 置信息的比特数为 ^β^" · ^^ 1)/2) , 其中"为可用的分组数， "「1 " 表示向 上取整。
21、 根据权利要求 13所述的映射及资源分配方法， 其特征在于， 当所 述 R-PDSCH承载 R8或 R9或 RIO终端的数据时， 所述共享信道为基站到 终端的 PDSCH。
22、 根据权利要求 21所述的映射及资源分配方法， 其特征在于， 当所 述 R-PDCCH与基站到 R8或 R9终端链路的 PDSCH所分配的资源重叠时， 则对所述 PDSCH在所分配的资源中所述重叠的资源上待发送的数据进行 打孔；当 R-PDCCH与基站到 R10终端链路的 PDSCH所分配的资源重叠时， 则 PDSCH不在所分配的资源中所述重叠的资源上映射及发送数据， 或者， 对所述 PDSCH在所分配的资源中所述重叠的资源上待发送的数据进行打 孔。
23、 根据权利要求 13所述的映射及资源分配方法， 其特征在于， 该方 法还包括： 接收端根据所述 R-PDSCH映射方法进行接收数据。
24、一种中继链路的物理下行共享信道 R-PDSCH的映射及资源分配装 置， 其特征在于， 包括： 映射及资源分配模块， 用于 R-PDSCH映射； 所述 R-PDSCH重用 LTE系统中共享信道所对应的资源分配方式或釆用分组树形 的资源分配方式。
25、 根据权利要求 24所述的映射及资源分配装置， 其特征在于， 所述 映射及资源分配模块具体用于： 所述 R-PDSCH在所分配的资源中 DL grant 和 /或 UL grant没有占用的全部或部分资源上映射及发送数据。
26、 根据权利要求 24所述的映射及资源分配装置， 其特征在于， 所述 重用 LTE系统中共享信道所对应的资源分配方式具体为： 基站到终端链路 的 PDCCH 下发的下行控制格式中的任何一种资源分配域对应的资源分配 方式。
27、 根据权利要求 24所述的映射及资源分配装置， 其特征在于， 所述 资源分配模块用于釆用分组树形的资源分配方式， 具体为： 对资源块或资 源块对或频率资源分组， 对所述分组后的资源进行树形资源分配， 釆用该 资源分配方式时位置信息的比特数为「10§2 + D / 其中"为可用的分组 数， "「 1" 表示向上取整。
28、 根据权利要求 24至 27任一项所述的映射及资源分配装置， 其特 征在于， 该装置还包括躱避模块， 用于当 R-PDCCH与 R-PDSCH所分配的 资源重叠时， R-PDSCH不在所分配的资源中所述重叠的资源上映射及发送 数据。
29、 根据权利要求 24至 27任一所述的映射及资源分配装置， 其特征 在于， 该装置还包括打孔模块， 用于当 R-PDCCH与 R-PDSCH所分配的资 源重叠时，对所述 R-PDSCH在所分配的资源中所述重叠的资源上的数据进 行打孑
30、 根据权利要求 28所述的映射及资源分配装置， 其特征在于， 所述 躱避模块，还用于当 R-PDCCH与基站到 R10终端链路的 PDSCH所分配的 资源重叠时， 不在所分配的资源中所述重叠的资源上映射及发送数据。
31、 根据权利要求 29所述的映射及资源分配装置， 其特征在于， 所述 打孔模块，还用于当 R-PDCCH与基站到 R8或 R9或 R10终端链路的 PDSCH 所分配的资源重叠时，对所述 PDSCH在所分配的资源中所述重叠的资源上 的数据进行打孔。
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