WO2013149594A1 - Procédé et dispositif de configuration de ressources - Google Patents

Procédé et dispositif de configuration de ressources Download PDF

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Publication number
WO2013149594A1
WO2013149594A1 PCT/CN2013/073743 CN2013073743W WO2013149594A1 WO 2013149594 A1 WO2013149594 A1 WO 2013149594A1 CN 2013073743 W CN2013073743 W CN 2013073743W WO 2013149594 A1 WO2013149594 A1 WO 2013149594A1
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WIPO (PCT)
Prior art keywords
resource block
physical resource
pdcch
physical
block
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Ceased
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PCT/CN2013/073743
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English (en)
Chinese (zh)
Inventor
吴强
刘江华
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
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Anticipated expiration legal-status Critical
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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

Definitions

  • the present application claims the priority of the Chinese Patent Application No. 201210098365.3, entitled “A Resource Configuration Method and Apparatus”, filed on April 6, 2012, the entire contents of which is incorporated herein by reference. .
  • the present invention relates to the field of wireless communications, and in particular, to a resource configuration method and apparatus. Background technique
  • the downlink multiple access method usually adopts an Orthogonal Frequency Division Multiple Access (OFDMA) method.
  • OFDM Orthogonal Frequency Division Multiple
  • a normal downlink subframe may include two slots, each of which has 7 OFDM symbols. And the size of the Resource Block (RB) is defined.
  • RB Resource Block
  • One RB contains 12 subcarriers in the frequency domain, and is half a subframe duration (one time slot) in the time domain, that is, contains 7 or 6 OFDM symbols.
  • a subcarrier within an OFDM symbol is called a Resource Element (RE), so an RB contains 84 or 72 REs.
  • a pair of RBs of two slots is called a resource block pair, that is, an RB pair.
  • control channels and traffic channels.
  • service data or control information
  • the fundamental purpose of communication is to transmit service data, and the role of the control channel is to assist in the transmission of service data. Therefore, the design of a communication system preferably minimizes the resources occupied by the control channel.
  • the Physical Downlink Control Channel is one type of control channel.
  • the PDCCH is transmitted based on the MIMO precoding method, which The PDCCH may be demodulated based on the UE-specific reference signal, which is referred to as an enhanced PDCCH (E-PDCCH).
  • E-PDCCH is not in the control region of the first n symbols of one subframe but in the region where the downlink data is transmitted in the subframe, and is shared with the physical downlink (Physical
  • Downlink Shared Channel PDSCH
  • PDSCH Downlink Shared Channel
  • the resource allocation mode of the relay PDCCH is a resource of Type 0 (type 0), Type 1 (type 1) and Type 2 (type 2) of the PDSCH. Allocation.
  • type 0 resource allocation is a resource block group (Resource)
  • RBG Block Group
  • the resource allocation mode of type 2 is also divided into localized resource allocation (localized resource allocation) and distributed resource allocation (distributed resource allocation).
  • type 2 distributed resource allocation when a VRB is mapped to PRB, one The location of the PRB mapped to the PRBs on the two slots is different. That is, the distributed resource allocation scheme uses different frequency domain resources in the two slots, and the diversity gain of the frequency can be obtained.
  • virtual resource blocks Virtual RBs, VRBs
  • Physical RBs, PRBs Physical RBs
  • the number of VRBs is the number of PRBs; When the resource is allocated, the VRB is allocated and mapped to the PRB through certain rules.
  • the resource allocation of PDSCH type 0 is in units of Resource Block Group (RBG), and indicates whether the resource is allocated by using a bitmap.
  • Type 2's centralized allocation is to allocate consecutive RBs to the PDSCH.
  • the technical problem to be solved by the embodiments of the present invention is to provide a resource configuration method and apparatus. It can alleviate scheduling restrictions on PDSCH resource allocation when E-PDCCH resource allocation, and improve resource allocation effectiveness.
  • an embodiment of the present invention provides a resource configuration method, including: configuring, by using a distributed resource allocation scheme, a physical downlink control channel E-in which a cell can be used for transmission enhancement in a resource block group RBG unit. a physical resource block of the PDCCH;
  • an embodiment of the present invention further provides a resource configuration apparatus, including:
  • a physical block configuration unit configured to configure, by using a distributed resource allocation scheme, a physical resource block in the cell that can be used for transmitting the enhanced physical downlink control channel E-PDCCH in a resource block group RBG unit;
  • a virtual block configuration unit configured to configure, according to the configured physical resource block, a virtual resource block for corresponding E-PDCCH transmission
  • a transmitting unit configured to perform E-PDCCH transmission in the small area according to the configured virtual resource block and the configured physical resource block.
  • an embodiment of the present invention further includes a base station, including the foregoing resource configuration apparatus.
  • Embodiments of the present invention have the following beneficial effects:
  • the physical resource blocks that are allowed to transmit the E-PDCCH are configured in units of resource block groups by using a distributed resource allocation scheme, and the physical resource block pair type 2 that transmits the E-PDCCH is avoided.
  • the limitation of PDSCH scheduling of type 0 realizes reasonable allocation of data signal and control signal transmission.
  • Figure 1 is a mapping relationship between PRB and VRB in the existing resource allocation
  • FIG. 2 is a schematic diagram of a specific process of a resource configuration method in an embodiment of the present invention
  • 3 is a schematic diagram of another specific process of the resource configuration method in the embodiment of the present invention
  • FIG. 4 is a schematic diagram of a physical resource block configured according to the method in FIG. 4 according to an embodiment of the present invention
  • the configuration in FIG. 5 is a schematic diagram of renumbering RBs on an RBG that is allowed to transmit an E-PDCCH;
  • FIG. 6 is a schematic diagram of a mapping relationship between a VRB and a PRB configured in the embodiment of the present invention
  • FIG. 7 is a schematic diagram of allocating a VRB number in the embodiment of the present invention
  • FIG. 8 is a schematic flowchart of an E-PDCCH transmission according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a specific composition of a resource configuration apparatus in an embodiment of the present invention.
  • RBGs numbered 4 and 5 can use resources of type 0. Allocation; For type 2 centralized resource allocation, except for RBs with PRB numbers 10-17, the maximum number of consecutively allocated RBs is 2.
  • the scheduling used by the E-PDCCH imposes scheduling restrictions on the scheduling of the PDSCH.
  • the physical resource blocks that are allowed to transmit the E-PDCCH are configured in units of resource block groups by using a distributed resource allocation scheme, and the physical resource block pair type 2 and the E-PDCCH are transmitted.
  • the limitation of PDSCH scheduling of type 0 enables a reasonable allocation of data signals and control signal transmission.
  • the E-PDCCH uses the type 2 distributed scheduling, since one VRB is mapped to the PRB, the location of one VRB mapped to the PRBs on the two slots is different. If the PRB pilot on slot 1 is only sent on slot 1, the PRB pilot of slot 2 is only sent on slot 2, since there are different positions of the two PRBs, there is only one slot for each PRB. Have pilots, Channel interpolation between two time slots cannot be done.
  • the embodiment of the present invention provides a method for simultaneously carrying pilots on a resource block pair to solve the problem, that is, on a certain PRB, one E-PDDCH is sent only in one time slot, but the pilot is on two time slots. All sent. The details are described below.
  • the resource configuration method in the embodiment of the present invention includes the following steps:
  • the physical resource block that can be used for transmitting the E-PDCCH includes a part of the physical resource block in the physical resource block that can be used for transmitting the E-PDCCH. That is, the physical resource block allocated to the E-PDCCH is part of all available physical resource blocks.
  • the configuration may be configured such that the configured physical resource blocks are uniformly distributed in the system bandwidth in units of resource block groups, that is, physical resource blocks configured in the frequency domain of the downlink subframe are
  • the resource block group is uniformly distributed in units.
  • the configured physical resource block includes the first physical resource block for transmitting the E-PDCCH in the first slot of the downlink subframe and the current physical resource block.
  • the second time slot of the downlink subframe is used to transmit the second physical resource block of the E-PDCCH.
  • the number of the virtual resource blocks used for the corresponding E-PDCCH transmission is configured according to the number of the configured physical resource blocks, and the number of the virtual resource block for transmitting the E-PDCCH is configured, and A mapping relationship between a resource block in the virtual resource block and a resource block in the configured physical resource block.
  • the 103. Perform E-PDCCH transmission in the cell according to the configured virtual resource block and the configured physical resource block. If the downlink subframe includes two slots, after the resource block configuration in the foregoing manner, when transmitting on the two slots, the frequency band corresponding to the first slot and the first physical resource block is determined. And a physical resource block determined by the second time slot and the frequency band corresponding to the second physical resource block, and corresponding to the first time slot and the second physical resource block Frequency band determined on the physical resource block, and in the second time slot and the first physical resource Simultaneously transmitting the pilot corresponding to the E-PDCCH transmission on the resource block pair of the two slots can improve the performance of the channel estimation, thereby improving the performance of the E-PDCCH.
  • the pilot is a demodulation reference signal
  • the method further includes: determining different physical resource blocks according to different time slots of the same subframe and the same frequency domain, where the different physical resource blocks are used to transmit different physical resource blocks.
  • the E-PDCCH of the user equipment transmits pilots corresponding to the different user equipments on the different physical resource blocks, and transmits pilots of the different user equipments through different ports.
  • the physical resource blocks that are allowed to transmit the E-PDCCH are configured in units of resource block groups by using a distributed resource allocation scheme, and the E-PDCCH is not performed when the RBs are used.
  • the same number of RBGs caused by scheduling cannot be scheduled for PDSCH of type 0, and the number of RBs that cannot be continuously allocated is also reduced. Therefore, PDSCH scheduling of type 2 and type 0 of physical resource blocks transmitting E-PDCCH is avoided.
  • FIG. 3 to FIG. 8 a specific implementation of the resource configuration method in the embodiment of the present invention is exemplarily illustrated.
  • the system bandwidth is assumed to be 28 RBs, and the implementation of the present invention is described based on this. How to allocate resource blocks in the example.
  • a physical resource block for transmitting an E-PDCCH according to a distributed resource allocation scheme.
  • the physical resource block is in units of RBG, and only certain RBGs can perform E-PDCCH transmission.
  • the E-PDCCH can be sent only on RBG0, RBG3, RBG6, and RBG9 as shown in Figure 3.
  • RBG9 has only one RB, and each of the other RBGs includes three RBs.
  • the RBGs that are allowed to transmit the E-PDCCH are distributed as evenly as possible in the frequency domain. For example, RBG0 and RBG3, RBG3 and RBG6, RBG6 and RBG9 are evenly distributed in the frequency domain, and are separated by two RBGs. This will result in better frequency diversity.
  • the uniform distribution includes the same number of RBGs, or the difference between the number of RBGs including the interval does not exceed a certain range, for example, the difference between the number of spaced RBGs does not exceed one.
  • the VRB number 0 of the E-PDCCH is allocated to the RB of the number 0 of the PRB, and in slot 1, the VRB number 0 of the E-PDCCH is assigned to the RB of the number 11 of the PRB.
  • the VRB number 1 of the E-PDCCH is allocated to the RB of the number 0 of the PRB.
  • the VRB number 1 of the E-PDCCH is assigned to the RB of the number 20 of the PRB, and so on.
  • an E-PDCCH row-column interleaver is defined, wherein the row-column interleaver of the E-PDCCH is 4 columns, and the number of rows is defined as ⁇ » rows, and the number of rows is
  • a total of 10 RBs are used for E-PDCCH transmission, and the number of rows and columns of interleaver is
  • N " ⁇ /( 4 )> 3.
  • the last row of the second and fourth columns are empty values, which are written in rows and read out in columns.
  • the value read in the first time slot is 0. , 4, 8, 1, 5, 2, 6, 9, 3, 7
  • the mapping between the first half and the second half of slot 0 is exchanged, that is, the number of slot 1 is obtained as 2, 6, 9, 3, 7, 0, 4, 8, 1, 5 .
  • the read value is the index of the RB on the E-PDDCH. On the RBs mapped to the physical resources, as shown in FIG.
  • the RBs with the index 0 are corresponding to the physical RB number 0; the RBs with the index 4 Corresponding physical RB number is 1; RB with index 8 is corresponding to physical RB number 0; RB with index 1 is corresponding to physical RB number 9; RB with index 5 is corresponding to physical RB number 10; RB with index 2 is corresponding to physical The RB number is 11; the RB whose index is 6 corresponds to the physical RB number is 18; the RB whose index is 9 corresponds to the physical RB number is 19; the RB whose index is 3 corresponds to the physical RB number is 20; the RB whose index is 7 corresponds to the physical RB number Is 27.
  • index The RB corresponding to the RB corresponds to the physical RB number of 0; the RB with the index of 6 corresponds to the physical RB number of 1; the RB with the index of 9 corresponds to the physical RB number of 2; the RB with the index of 3 corresponds to the physical RB number of 9;
  • the RB corresponding physical RB number is 10; the RB with index 0 is corresponding to physical RB number 11; the RB with index 4 is corresponding to physical RB number 18; the RB with index 8 is corresponding to physical RB number 19;
  • the corresponding physical RB number is 20; the RB with index 5 is corresponding to the physical RB number 27.
  • the base station determines, by using a static configuration, a semi-static configuration, or a dynamic configuration method, a search space of the E-PDCCH of the UE.
  • the search space is a VRB that is further configurable to the UE in the VRB configured by the UE in the foregoing manner.
  • the E-PDCCH can be transmitted in two time slots. There may be frequency domain slot hopping in the two time slots. That is, on two time slots, the E-PDCCH is transmitted on different frequency domain resources.
  • the demodulation pilot allocated to the E-PDCCH needs to be transmitted on this slot.
  • Figure 9 In FIG. 9, in slot 0, E-PDCCH is transmitted on PRB0, and in slot 1, E-PDCCH is transmitted on PRB 11, but in PRB0 and PRB11, both slots are transmitted due to this E-PDCCH.
  • Demodulated pilot such as Demodulation Reference Signal (DMRS)
  • the pilot for the E-PDCCH is sent in two time slots (one RB pair is sent); the pilot may specifically be a DMRS.
  • the E-PDCCH On one RB pair, the E-PDCCH is time-frequency divided for different UEs, but the DMRS is a code division and is distinguished by different ports. For a DMRS port of the E-PDCCH used by one UE, a predefined DMRS port can be used. The RB/time slot of the E-PDCCH can be bound to the antenna port through high-level signaling.
  • the physical resource block in which the E-PDCCH is uniformly configured in the system bandwidth is configured in units of resource block groups, and the scheduling of the E-PDCCH in units of RBs does not occur.
  • the same number of RBGs that are caused by the time cannot be scheduled for the PDSCH of type 0, and the number of RBs that cannot be continuously allocated is also reduced, and the physical resource blocks that transmit the E-PDCCH are prevented from scheduling PDSCH of type 2 and type 0. Restriction to achieve a reasonable distribution of data signals and control signal transmission.
  • the resource configuration apparatus may include: a physical block configuration unit 10, configured to configure, by using a distributed resource allocation scheme, a physical resource block in the cell that can be used for transmitting the enhanced physical downlink control channel E-PDCCH in a resource block group RBG unit a virtual block configuration unit 12, configured to configure a virtual resource block for corresponding E-PDCCH transmission according to the physical resource block configured by the physical block configuration unit, and a transmission unit 14 configured to configure according to the virtual block configuration unit
  • the virtual resource block and the physical resource block configured by the physical block configuration unit perform E-PDCCH transmission in the cell.
  • the physical resource block that can be used to transmit the E-PDCCH includes a part of physical resource blocks in the physical resource block that can be used to transmit the E-PDCCH. Further, the configured physical resource blocks are distributed in the system bandwidth in units of resource block groups.
  • the virtual block configuration unit 10 is specifically configured to configure, according to the number of physical resource blocks configured by the physical block configuration unit, the number of virtual resource blocks used for corresponding E-PDCCH transmission, and configure the virtual resource block of the E-PDCCH to be transmitted. a number, and a mapping relationship between the resource block in the virtual resource block and the resource block in the configured physical resource block.
  • the configured physical resource blocks are distributed in units of resource block groups within the system bandwidth.
  • the configured physical resource block includes a first physical resource block for transmitting an E-PDCCH in a first time slot of a downlink subframe and a second time slot of the downlink subframe for transmitting the E-PDCCH
  • the second physical resource block
  • the transmitting unit 14 is further configured to: on the physical resource block determined by the first time slot and the frequency band corresponding to the first physical resource block, and in the second time slot and the second a physical resource block determined by a frequency band corresponding to the physical resource block, and a physical resource block determined by a frequency band corresponding to the first time slot and the second physical resource block, and by the second time slot and
  • the pilot is a demodulation reference signal
  • the transmission unit 14 is further configured to determine different physical resource blocks according to different time slots of the same subframe and the same frequency domain, where the different physical resources are different.
  • the block is configured to transmit E-PDCCHs of different user equipments, and transmit pairs on the different physical resource blocks
  • the pilots of the different user equipments are transmitted through different ports according to the pilots of the different user equipments.
  • the physical resource blocks of the E-PDCCH are configured in units of resource block groups, and the same RBG that cannot be dispatched when the E-PDCCH scheduling is performed in units of RBs cannot be scheduled.
  • the use of the PDSCH of type 0 also reduces the number of RBs that cannot be continuously allocated, thus avoiding the limitation of the physical resource block transmitting the E-PDCCH to the PDSCH scheduling of type 2 and type 0, and realizing the reasonable allocation of data signals and control signal transmission. .
  • the physical resource block that is allowed to transmit the E-PDCCH is restricted in units of the resource block group, so that the physical resource block that transmits the E-PDCCH only occupies part of the resource block group in the downlink subframe, and the E-PDCCH is avoided.
  • the physical resource block may occupy most or all of the resource block groups in the downlink subframe, the PDSCH is scheduled to limit the downlink data, and the data signal and the control signal transmission are allocated reasonably.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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

Abstract

L'invention concerne un procédé et un dispositif de configuration de ressources. Le procédé comprend : la configuration d'un bloc de ressources physiques qui peut être utilisé pour transmettre un canal de commande de liaison descendante physique amélioré (E-PDCCH) dans une cellule à l'aide d'un groupe de blocs de ressources (RBG) comme unité grâce à une solution d'attribution de ressources réparties (101) ; selon le bloc de ressources physiques configuré, la configuration d'un bloc de ressources virtuelles qui est utilisé pour correspondre à une transmission E-PDCCH (102) ; et selon le bloc de ressources virtuelles configuré et le bloc de ressources physiques configuré, la réalisation d'une transmission E-PDCCH dans la cellule (103). La présente invention peut être appliquée pour réduire la limitation de programmation sur l'attribution de ressources PDSCH qui est générée pendant une attribution de ressources E-PDCCH, ce qui augmente l'efficacité d'attribution de ressources.
PCT/CN2013/073743 2012-04-06 2013-04-03 Procédé et dispositif de configuration de ressources Ceased WO2013149594A1 (fr)

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CN201210098365.3A CN103369675B (zh) 2012-04-06 2012-04-06 一种资源配置方法和装置
CN201210098365.3 2012-04-06

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WO2018184504A1 (fr) * 2017-04-06 2018-10-11 华为技术有限公司 Procédé d'attribution de ressources virtuelles, nfvo et système
WO2019095907A1 (fr) * 2017-11-17 2019-05-23 维沃移动通信有限公司 Procédé de mappage de ressources, procédé de détermination de ressources, dispositif de réseau et terminal utilisateur

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CN105103581A (zh) * 2014-02-13 2015-11-25 华为技术有限公司 数据传输方法、装置及系统
CN107027183B (zh) * 2016-02-02 2020-03-24 电信科学技术研究院 一种资源分配、数据传输方法及装置
CN107041003B (zh) * 2016-02-03 2020-04-10 电信科学技术研究院 一种上下行传输资源分配方法及装置
CN107889233B (zh) * 2016-09-29 2020-05-08 华为技术有限公司 一种资源配置的方法及装置
KR102897791B1 (ko) * 2016-10-17 2025-12-10 에스케이하이닉스 주식회사 메모리 시스템 및 메모리 시스템의 동작 방법
CN108365928B (zh) * 2017-01-26 2023-04-07 北京三星通信技术研究有限公司 配置信息的发送方法、控制信道资源的检测方法和装置
CN108633021B (zh) 2017-03-23 2024-01-19 华为技术有限公司 一种上行控制信道的资源映射方法及装置
CN117956617A (zh) * 2023-01-31 2024-04-30 中兴通讯股份有限公司 一种物理信道处理方法、装置及存储介质

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WO2018184504A1 (fr) * 2017-04-06 2018-10-11 华为技术有限公司 Procédé d'attribution de ressources virtuelles, nfvo et système
WO2019095907A1 (fr) * 2017-11-17 2019-05-23 维沃移动通信有限公司 Procédé de mappage de ressources, procédé de détermination de ressources, dispositif de réseau et terminal utilisateur
CN109803412A (zh) * 2017-11-17 2019-05-24 维沃移动通信有限公司 资源映射方法、确定方法、网络侧设备及用户终端
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