[go: up one dir, main page]

WO2018024193A1 - Procédé et appareil basés sur une démodulation de dmrs pour commander une configuration de ressources de canal dans un tti court - Google Patents

Procédé et appareil basés sur une démodulation de dmrs pour commander une configuration de ressources de canal dans un tti court Download PDF

Info

Publication number
WO2018024193A1
WO2018024193A1 PCT/CN2017/095433 CN2017095433W WO2018024193A1 WO 2018024193 A1 WO2018024193 A1 WO 2018024193A1 CN 2017095433 W CN2017095433 W CN 2017095433W WO 2018024193 A1 WO2018024193 A1 WO 2018024193A1
Authority
WO
WIPO (PCT)
Prior art keywords
resource
short
resource element
short tti
time domain
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/095433
Other languages
English (en)
Chinese (zh)
Inventor
王磊
高雪娟
潘学明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Academy of Telecommunications Technology CATT
Original Assignee
China Academy of Telecommunications Technology CATT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Academy of Telecommunications Technology CATT filed Critical China Academy of Telecommunications Technology CATT
Publication of WO2018024193A1 publication Critical patent/WO2018024193A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • 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
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a method and apparatus for configuring a control channel resource based on a DMRS (Demodulation Reference Signal) demodulation in a short TTI (Transmission Time Interval).
  • DMRS Demodulation Reference Signal
  • the mobile Internet is subverting the traditional mobile communication business model, providing users with an unprecedented experience, which has a profound impact on all aspects of people's work and life.
  • the mobile Internet will promote the further upgrade of human social information interaction methods, providing users with a richer business experience such as augmented reality, virtual reality, ultra high definition (3D) video, mobile cloud and so on.
  • the further development of the mobile Internet will bring about a thousand times increase in mobile traffic in the future, and promote a new round of changes in mobile communication technologies and industries.
  • the Internet of Things has expanded the range of services for mobile communications, from human-to-human communication to the intelligent interconnection of people and things, things and things, making mobile communication technology penetrate into a wider range of industries and fields.
  • the PDCCH (physical downlink control channel) of the LTE system is used to carry scheduling information and other control information.
  • the transmission of one control channel occupies one CCE (control channel element) or multiple consecutive CCEs, each CCE is composed of 9 REGs (resource element group), and the REG included in the CCE of the PDCCH It is a REG that is not used to carry PCFICH and PHICH (Physical Hybrid Automatic Repeat Indicator Channel).
  • an EPDCCH Enhanced Physical Downlink Control Channel
  • the EPDCCH is transmitted in a data area in a subframe, and cannot occupy the transmission space of the PDCCH. Similar to the PDCCH, the concept of an EREG (enhanced resource element group) and an ECCE (enhanced control channel element) is introduced.
  • the TTI length is fixed to 1 ms, and the EREG and ECCE carrying the EPDCCH are defined in units of PRB pairs.
  • a PRB pair includes 12 subcarriers and 14 (normal CP) or 12 (extended CP) OFDM (Orthogonal Frequency Division Multiplexing) symbols.
  • the EREG removes the DMRS RE (resource element) from the PRB pair. Resource element) composition. The shorter the TTI length, the less RE resources are contained in the 12 subcarriers in the frequency domain of the TTI.
  • the embodiments of the present disclosure provide a method and apparatus for configuring a control channel resource based on DMRS demodulation in a short TTI, and implementing resources of a control channel based on DMRS demodulation in a control region, so that a short TTI can be used.
  • Downlink control channel based on DMRS demodulation Downlink control channel based on DMRS demodulation.
  • a DMRS demodulation based on a short TTI is provided. a method of controlling channel resource configuration,
  • all resource elements in the resource unit group are cyclically numbered according to the order of the pre-frequency domain or the first-time domain and the post-frequency domain;
  • a resource element with the same number is grouped into a short resource element group.
  • the resource unit group is N resource units that are consecutive or dispersed in a frequency domain within a short TTI, and N is a positive integer greater than 1.
  • the resource unit occupies all OFDM symbols in a short TTI in the time domain, occupies consecutive X1 subcarriers in the frequency domain, or occupies consecutive X2 resource blocks, where X1 and X2 are greater than or equal to 1 Positive integer.
  • the short TTI is composed of Y consecutive OFDM symbols in the time domain, Y is a positive integer greater than or equal to 1, and the length of the short TTI is less than 1 ms.
  • the Y is equal to 2 or Y is equal to 7.
  • each resource element group includes M short resource element groups, M is a positive integer greater than or equal to 1, and the short resource element group is numbered from 0 to M-1.
  • the resource elements in each resource unit group are numbered from 0 to M-1 in the order of the pre-frequency domain post-time domain or the pre-time domain post-frequency domain.
  • the determining the number of short resource element groups corresponding to one resource unit group includes:
  • the time domain after the frequency domain is numbered, if the number resource element is the highest resource element in the frequency domain within the resource unit group on one OFDM symbol P, the next number resource element is the next OFDM symbol P+ 1 is the lowest resource element in the frequency domain group, P is an integer greater than or equal to 0, and OFDM symbol P+1 is an OFDM symbol in the short TTI; or
  • the number resource element is a resource element corresponding to the last OFDM symbol in the short TTI on one subcarrier Z
  • the next number resource element is A resource element corresponding to the first OFDM symbol in the short TTI on the subcarrier Z+1
  • Z is an integer greater than or equal to 0
  • the subcarrier Z+1 is a subcarrier within the resource unit group.
  • an apparatus for configuring a control channel resource based on DMRS demodulation in a short TTI including:
  • a determining module configured to determine a number of short resource element groups corresponding to one resource unit group in the short TTI control region
  • a numbering module configured to cyclically number all the resource elements RE in the resource unit group according to the number of short resource element groups according to the order of the first frequency domain or the first time domain;
  • a processing module for grouping resource elements having the same number into a short resource element group
  • the resource unit group is N resource units that are consecutive or dispersed in a frequency domain within a short TTI, and N is a positive integer greater than 1.
  • the resource unit occupies all OFDM symbols in a short TTI in the time domain, occupies consecutive X1 subcarriers in the frequency domain, or occupies consecutive X2 RBs, where X1 and X2 are greater than or equal to 1.
  • the short TTI is composed of Y consecutive OFDM symbols in the time domain, Y is a positive integer greater than or equal to 1, and the length of the short TTI is less than 1 ms.
  • the Y is equal to 2 or Y is equal to 7.
  • each resource element group includes M short resource element groups, M is a positive integer greater than or equal to 1, and the short resource element group is numbered from 0 to M-1.
  • the resource elements in each resource unit group are numbered from 0 to M-1 in the order of the pre-frequency domain post-time domain or the pre-time domain post-frequency domain.
  • the determining module is further configured to: determine, according to the quantity of resource elements in the resource unit group, the number of short resource element groups, where
  • the numbering module is further configured to:
  • the time domain is numbered in the time domain, if the numbered resource element is on an OFDM symbol P
  • the highest resource element in the frequency domain of the resource unit group, the next number resource element is the lowest resource element in the frequency domain of the resource unit group on the next OFDM symbol P+1, and P is an integer greater than or equal to 0, OFDM
  • the symbol P+1 is an OFDM symbol within the short TTI; or
  • the numbered resource element is a resource element corresponding to the last OFDM symbol in the short TTI on one subcarrier Z
  • the next numbered resource element is a short TTI on the subcarrier Z+1.
  • a resource element corresponding to the first OFDM symbol, Z is an integer greater than or equal to 0, and subcarrier Z+1 is a subcarrier within the resource unit group.
  • an apparatus for configuring a control channel resource based on DMRS demodulation in a short TTI including:
  • transceiver for receiving and transmitting data under the control of the processor
  • the processor is configured to do the following:
  • all resource elements in the resource unit group are cyclically numbered according to the order of the first frequency domain or the first time domain;
  • a resource element with the same number is grouped into a short resource element group.
  • a non-transitory computer readable storage medium storing computer readable instructions executable by a processor, When a read instruction is executed by a processor, the processor performs the following operations:
  • all resource elements in the resource unit group are cyclically numbered according to the order of the first frequency domain or the first time domain;
  • a resource element with the same number is grouped into a short resource element group.
  • One technical solution in the foregoing technical solution has the following advantages or advantages: first, determining the number of SREGs corresponding to one RUG in the short TTI control region; and then, according to the number of SREGs, according to the first frequency domain after all REs in the RUG The sequential cyclic number of the domain or the time domain of the first time domain; the REs with the same number are combined into one SREG, and the resources of the control channel based on DMRS demodulation are configured in the control region, so that the short TTI can use the downlink based on DMRS demodulation Control channel.
  • FIG. 1 is a schematic diagram of a frame structure used by an existing LTE FDD system
  • FIG. 2 is a schematic diagram of a frame structure used by an existing LTE TDD system
  • 3 is a schematic diagram of an existing downlink resource grid
  • FIG. 4 is a flowchart of a method for configuring a control channel resource in a short TTI according to an embodiment of the present disclosure
  • 5A-5C are schematic diagrams of mapping of resource elements in a short TTI control region according to an embodiment of the present disclosure
  • 6A-6B are schematic diagrams of mapping of resource elements in a short TTI control region according to an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of mapping of resource elements in a short TTI control region according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of mapping of resource elements in a short TTI control region according to an embodiment of the present disclosure
  • 9A-9C are schematic diagrams of mapping of resource elements in a short TTI control region according to an embodiment of the present disclosure.
  • 10A-10C are schematic diagrams of mapping of resource elements in a short TTI control region according to an embodiment of the present disclosure
  • 11 is a block diagram of an apparatus for configuring control channel resources in a short TTI in an embodiment of the present disclosure.
  • embodiments of the present disclosure may be implemented as a system, apparatus, device, method, or computer program product.
  • embodiments of the present disclosure may be embodied in the form of full hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.
  • the existing LTE FDD (Frequency Division Duplex) system uses a frame structure (frame structure type 1, FS1 for short), and its structure is as shown in FIG. 1.
  • frame structure type 1, FS1 for short the uplink and downlink transmissions use different carrier frequencies, and both the uplink and downlink transmissions use the same frame structure.
  • a 10ms length radio frame contains 10 1ms subframes within each subframe. It is divided into two time slots of 0.5 ms long.
  • the TTI duration of uplink and downlink data transmission is 1 ms.
  • the existing LTE TDD (Time Division Duplex) system uses a frame structure type 2 (FS2), as shown in FIG. 2 .
  • FS2 frame structure type 2
  • uplink and downlink transmissions use different subframes or different time slots on the same frequency.
  • Each 10 ms radio frame in FS2 consists of two 5 ms half frames, each of which contains five subframes of 1 ms length.
  • the sub-frames in FS2 are classified into three types: downlink sub-frames, uplink sub-frames, and special sub-frames.
  • Each special sub-frame consists of a Downlink Pilot Time Slot (DwPTS) and a Guard Period (GP).
  • Uplink Pilot Time Slot (UpPTS) is composed of three parts.
  • the DwPTS can transmit the downlink pilot, the downlink service data and the downlink control signaling; the GP does not transmit any signal; the UpPTS only transmits the random access and sounding reference symbol (SRS), and cannot transmit the uplink service or the uplink control information.
  • Each field includes at least one downlink subframe and at least one uplink subframe, and at most one special subframe. Table 7 lists the seven uplink and downlink subframe configurations supported by FS2.
  • the minimum resource granularity in the time domain is one OFDM symbol
  • the minimum resource granularity in the frequency domain is one subcarrier.
  • (k, l) is the number of a basic resource element (RE).
  • PRB physical resource element
  • RE composition is a PRB pair in a subframe.
  • the PRB pair is the basic unit of data resource allocation. See Figure 3.
  • Step 401 determining the number of short resource element groups corresponding to a resource unit group in the short TTI control area, and then proceeds to step 402;
  • step 401 is: determining the number of SREGs according to the number of resource elements in the resource unit group.
  • the number of SREGs can also be determined in other manners in this embodiment.
  • Step 402 According to the number of SREGs, all resource elements in the resource unit group are cyclically numbered according to the order of the first frequency domain or the first time domain and then the frequency domain, and then enter 403;
  • Step 403 grouping resource elements having the same number into one SREG.
  • the resource unit group (RU group) is a continuous or distributed N resource unit (RE unit) in a short TTI internal frequency domain, and N is a positive integer greater than 1.
  • the resource unit occupies all OFDM symbols in a short TTI in the time domain, occupies consecutive X1 subcarriers in the frequency domain, or occupies consecutive X2 RBs, where X1 and X2 are positive integers greater than or equal to 1.
  • the size of the resource unit group is related to the time domain length of the short TTI.
  • the short resource element group (Shoreened Resource Element Group, SREG for short) is a mapping resource unit of the control channel in the control region on the short TTI.
  • one SREG is composed of multiple resource elements (REs) in the same resource unit group, each resource unit group contains M SREGs, and M is a positive integer greater than or equal to 1, for example, M equals 4 or M. Equal to 16, each SREG is numbered from 0 to M-1.
  • REs resource elements
  • the resource elements in each resource unit group are numbered according to 0 to M-1, and the loop number may be: the first frequency domain back time domain, or the first time domain post-frequency domain.
  • the number starts from the lowest resource element in the frequency domain of the first OFDM symbol of the short TTI and spans different resource elements within the resource unit group. When the number reaches M-1, the number is restarted from 0.
  • the numbered resource element is the highest resource element in the frequency domain within the resource unit group on an OFDM symbol P (P is an integer greater than or equal to 0), the next number resource element The lowest one resource element in the frequency domain within the resource unit group on the next OFDM symbol P+1 (OFDM symbol P+1 is the OFDM symbol in the short TTI).
  • the numbered resource element is a resource element corresponding to the last OFDM symbol in the short TTI on one subcarrier Z (Z is an integer greater than or equal to 0)
  • the next number resource element is a resource element corresponding to the first OFDM symbol in the short TTI on the subcarrier Z+1 (subcarrier Z+1 is a subcarrier in the resource unit group).
  • the value of the foregoing M is related to the total number of resource elements in the resource unit group, and the more the number of resource elements in the resource unit group, the more the number of short resource element groups; the resource elements in the resource unit group The smaller the number, the smaller the number of short resource element groups.
  • the short TTI is composed of Y consecutive OFDM symbols in the time domain, for example, Y is equal to 2 or Y is equal to 7, and the short TTI is less than 1 ms. It is to be understood that Y is not limited in this embodiment. The specific value.
  • RU group consists of 3 RUs and 4 RUGs in one RU group, all resource elements in the RU group (RE) ), according to the order of the first frequency domain or the time domain of the first time domain, the number range is 0, 1, 2, 3.
  • REs with the same number form an SREG.
  • SREG0 consists of all REs numbered
  • SREG1 consists of all REs numbered 1, and so on.
  • each RU group consists of three RUs and one RU group contains six SREGs
  • all RE elements in the RU group are numbered in the order of the pre-frequency domain or the time domain and the frequency domain.
  • the range is 0, 1, 2, 3, 4, 5.
  • SREG0 consists of all REs numbered
  • SREG1 consists of all REs numbered 1, and so on.
  • each RU group consists of 4 RUs and 11 RUGs are included in one RU group
  • all REs in the RU group are numbered in the order of the pre-frequency domain or the first-time domain and the post-frequency domain. It is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10.
  • SREG0 consists of all REs numbered
  • SREG1 consists of all REs numbered 1, and so on.
  • the numbering may start from the lowest one RE in the frequency domain of the first OFDM symbol of the short TTI and span different RUs in the RU group. When the number reaches M-1, the number is restarted from 0.
  • the time domain of the pre-frequency domain is numbered, if the number RE is an OFDM symbol P (P is An integer greater than or equal to 0) The highest RE in the inner frequency domain of the RU group, and the next number RE is the next OFDM symbol P+1 (the OFDM symbol P+1 is the OFDM symbol in the short TTI) The lowest RE in the inner frequency domain.
  • P is An integer greater than or equal to 0
  • the next number RE is a subcarrier.
  • Z+1 subcarrier Z+1 is a subcarrier in the RU group
  • each RU group consists of 2 RUs and 16 RUGs are included in one RU group
  • all RE elements in the RU group are cyclically numbered according to the order of the time domain and the time domain.
  • Cycle number, number range 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15.
  • REs with the same number form an SREG.
  • SREG0 consists of all REs numbered
  • SREG1 consists of all REs numbered 1, and so on.
  • mapping process of the RE in the SREG is the same as the short TTI in which the time domain length includes two OFDM symbols, and is not described here.
  • a short TTI time domain includes 2 OFDM symbols
  • the SREG resource mapping is as shown in FIGS. 5A to 5C.
  • the RE included in the SREG does not include the RE occupied by the DMRS for control channel demodulation.
  • each RU group includes four SREGs, and each SREG is composed of REs having the same label in the RU group.
  • FIG. 5A shows that the short TTI includes only the DMRS for the control channel demodulation in the short TTI, and does not include the CRS AP or the CSI-RS AP;
  • FIG. 5B shows that the short TTI includes the DMRS for the control channel demodulation in the short TTI and One CRS AP;
  • FIG. 5C shows that the short TTI includes a DMRS for control channel demodulation in a short TTI and a CRS AP and a CSI-RS AP.
  • the location of the DMRS is assumed to be within a short TTI of other locations and density distributions. For example, SREG0 consists of all REs whose RE number is 0 in the RU group.
  • the REs that make up the SREG may be CRS or CSI-RS is occupied. As shown in FIGS. 5B and 5C, the REs occupied by the CRS AP and the CSI-RS AP can still serve as the RE of the SREG.
  • the RE of the SREG is excluded from the RE that may be occupied by the DMRS.
  • the SREG may include the RE occupied by the DMRS.
  • the RE included in the SREG does not include the RE occupied by the DMRS for control channel demodulation.
  • each RU group includes 16 SREGs, and each SREG is composed of REs having the same label in the RU group.
  • FIG. 6A shows a control region including a legacy (legacy) LTE system in a short TTI (assuming 2 OFDM symbols), including a DMRS for control channel demodulation in a short TTI, including 4 CRS ports and 8 CSI-RSs. Port; Figure 6B shows the DMRS and the four CRS ports for the control channel demodulation in the short TTI within the short TTI.
  • SREG0 consists of all REs whose RE number is 0 in the RU group.
  • the REs that make up the SREG may be occupied by CRS or CSI-RS.
  • the REs occupied by the CRS or CSI-RS ports are still calculated into the REs contained in the SREG.
  • SREG0, FIGS. 6A to 6B each contain 10 REs.
  • the number of REs contained in different SREGs may be different.
  • the RE of the SREG is excluded from the RE that may be occupied by the DMRS.
  • the SREG may include the RE occupied by the DMRS.
  • the resource mapping method of the SREG first time domain post-frequency domain is applicable to this embodiment.
  • the short TTI time domain includes 2 OFDM symbols
  • the SREG resource mapping is shown in Figure 7.
  • the bandwidth allocated to the short TTI is 10 RUs
  • the RU number is from 0 to 9.
  • the RU group is composed of RU0, RU4, and RU8. As shown in FIG.
  • each RU group includes 4 SREGs, and each SREG is composed of REs having the same label in the RU group, and the REs included in the SREG do not include REs occupied by DMRSs for control channel demodulation.
  • (a) indicates that the short TTI includes only the DMRS for control channel demodulation in the short TTI, and does not include the CRS AP or the CSI-RS AP;
  • (b) indicates that the short TTI includes the control channel demodulation for the short TTI.
  • table The short TTI includes a DMRS for control channel demodulation in a short TTI and a CRS AP and a CSI-RS AP.
  • SREG0 consists of all REs whose RE number is 0 in the RU group.
  • the REs that make up the SREG may be occupied by CRS or CSI-RS.
  • the REs occupied by the CRS AP and the CSI-RS AP can still serve as the RE of the SREG.
  • the RE of the SREG is excluded from the RE that may be occupied by the DMRS.
  • the SREG may include the RE occupied by the DMRS.
  • the resource mapping method of the SREG first time domain post-frequency domain is applicable to this embodiment.
  • the short TTI time domain includes 7 OFDM symbols
  • the RE included in the SREG does not include the RE occupied by the DMRS for control channel demodulation.
  • each RU group includes 16 SREGs, and each SREG is composed of REs having the same label in the RU group.
  • SREG0 consists of all REs whose RE number is 0 in the RU group.
  • the REs that make up the SREG may be occupied by CRS or CSI-RS.
  • the REs occupied by the CRS or CSI-RS ports are still calculated into the REs contained in the SREG.
  • SREG0, (a) and (b) each contain 10 REs. The number of REs contained in different SREGs may be different.
  • the RE of the SREG is excluded from the RE that may be occupied by the DMRS.
  • the SREG may include the RE occupied by the DMRS.
  • the resource mapping method of the SREG first time domain post-frequency domain is applicable to this embodiment.
  • the short TTI time domain includes 2 OFDM symbols
  • the SREG resource mapping is as shown in FIG. 9A to FIG. 9C.
  • the RE included in the SREG does not include the RE occupied by the DMRS for control channel demodulation.
  • each RU group includes 11 SREGs, and each SREG is included in the RU group.
  • the same number of REs are composed.
  • FIG. 9A shows that the short TTI includes only the DMRS for the control channel demodulation in the short TTI, and does not include the CRS AP or the CSI-RS AP;
  • FIG. 9B shows that the short TTI includes the DMRS for the control channel demodulation in the short TTI and One CRS AP;
  • FIG. 9C shows that the short TTI includes a DMRS for control channel demodulation in a short TTI and a CRS AP and a CSI-RS AP.
  • the location of the DMRS is assumed to be within a short TTI of other locations and density distributions. For example, SREG0 consists of all REs whose RE number is 0 in the RU group.
  • the REs that make up the SREG may be occupied by CRS or CSI-RS. As shown in FIG. 9B and FIG. 9C, the REs occupied by the CRS AP and the CSI-RS AP can still serve as the RE of the SREG.
  • the RE of the SREG is excluded from the RE that may be occupied by the DMRS.
  • the SREG may include the RE occupied by the DMRS.
  • the resource mapping method of the SREG first time domain post-frequency domain is applicable to this embodiment.
  • the mapping of the SREG is preceded by the time domain and the subsequent frequency domain.
  • the RE included in the SREG does not include the RE occupied by the DMRS for control channel demodulation.
  • each RU group includes seven SREGs, and each SREG is composed of REs having the same label in the RU group.
  • FIG. 10A shows that the short TTI includes only the DMRS for the control channel demodulation in the short TTI, and does not include the CRS AP or the CSI-RS AP;
  • FIG. 10B shows that the short TTI includes the DMRS for the control channel demodulation in the short TTI and One CRS AP;
  • FIG. 10C shows that the short TTI includes a DMRS for control channel demodulation in a short TTI and a CRS AP and a CSI-RS AP.
  • the location of the DMRS is assumed to be within a short TTI of other locations and density distributions. For example, SREG0 consists of all REs whose RE number is 0 in the RU group.
  • the REs that make up the SREG may be occupied by CRS or CSI-RS. As shown in FIGS. 10B and 10C, the REs occupied by the CRS AP and the CSI-RS AP can still serve as the RE of the SREG.
  • the RE of the SREG is excluded from the RE that may be occupied by the DMRS.
  • the SREG may include the RE occupied by the DMRS.
  • an apparatus for configuring a control channel resource based on DMRS demodulation in a short TTI comprising:
  • a determining module 1101 configured to determine a quantity of short resource element groups SREG corresponding to one resource unit group RUG in the short TTI control region;
  • the numbering module 1102 is configured to cyclically number all the resource elements RE in the resource unit group according to the number of short resource element groups SREG according to the order of the first frequency domain or the first time domain.
  • the processing module 1103 is configured to group the resource elements RE having the same number into a short resource element group SREG.
  • the resource unit group RUG is N consecutive resource elements RU in a frequency domain within a short TTI, and N is a positive integer greater than 1.
  • the resource unit RU occupies all OFDM symbols in a short TTI in the time domain, occupies consecutive X1 subcarriers in the frequency domain, or occupies consecutive X2 RBs, where X1 and X2 are greater than or equal to 1 Positive integer.
  • the short TTI is composed of Y consecutive OFDM symbols in the time domain, Y is a positive integer greater than or equal to 1, and the length of the short TTI is less than 1 ms.
  • the Y is equal to 2 or Y is equal to 7.
  • each resource element group includes M short resource element groups, M is a positive integer greater than or equal to 1, and the short resource element group is numbered from 0 to M-1.
  • the resource elements in each resource unit group are numbered from 0 to M-1 in the order of the pre-frequency domain post-time domain or the pre-time domain post-frequency domain.
  • the value of the M is related to the total number of resource elements in the resource unit group.
  • the determining module is further configured to: determine, according to the quantity of resource elements RE in the resource unit group RUG, the number of short resource element groups SREG, where the number of resource elements RE in the resource unit group RUG The more the number of short resource element groups SREG, the smaller the number of resource elements RE in the resource unit group RUG, and the smaller the number of short resource element groups SREG.
  • the numbering module is further configured to: when the first frequency domain is numbered, if the numbered resource element is the highest resource element in the frequency domain of the resource unit group on one OFDM symbol P, the next number resource The element is in the inner frequency domain of the resource unit group on the next OFDM symbol P+1
  • the lowest one resource element, P is an integer greater than or equal to 0, and the OFDM symbol P+1 is an OFDM symbol within the short TTI; or
  • the numbered resource element is a resource element corresponding to the last OFDM symbol in the short TTI on one subcarrier Z
  • the next numbered resource element is a short TTI on the subcarrier Z+1.
  • a resource element corresponding to the first OFDM symbol, Z is an integer greater than or equal to 0, and subcarrier Z+1 is a subcarrier within the resource unit group.
  • the resources of the control channel based on the DMRS demodulation are configured in the control region, so that the short TTI can use the downlink control channel based on DMRS demodulation.
  • system and “network” are used interchangeably herein.
  • B corresponding to A means that B is associated with A, and B can be determined from A.
  • determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.
  • the disclosed method and apparatus may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • a direct coupling or communication connection may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network side device, etc.) to perform part of the steps of the transceiving method of the various embodiments of the present disclosure.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, and the program code can be stored. Medium.

Landscapes

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

Abstract

Les modes de réalisation de la présente invention concernent un procédé basé sur une démodulation de DMRS et un appareil pour commander une configuration de ressources de canal dans un TTI court. Le procédé consiste à : déterminer la quantité de groupes d'éléments de ressources courts correspondant à un groupe d'unités de ressources dans une zone de commande de TTI court ; numéroter circulairement, selon la quantité des groupes d'éléments de ressources courts, tous les éléments de ressources du groupe d'unités de ressources dans une séquence domaine fréquentiel-domaine temporel, ou dans une séquence domaine temporel-domaine fréquentiel ; et combiner les éléments de ressources présentant le même nombre dans un groupe d'éléments de ressources courts.
PCT/CN2017/095433 2016-08-05 2017-08-01 Procédé et appareil basés sur une démodulation de dmrs pour commander une configuration de ressources de canal dans un tti court Ceased WO2018024193A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610638664.X 2016-08-05
CN201610638664.XA CN107689856B (zh) 2016-08-05 2016-08-05 短tti中基于dmrs解调的控制信道资源配置的方法及装置

Publications (1)

Publication Number Publication Date
WO2018024193A1 true WO2018024193A1 (fr) 2018-02-08

Family

ID=61073555

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/095433 Ceased WO2018024193A1 (fr) 2016-08-05 2017-08-01 Procédé et appareil basés sur une démodulation de dmrs pour commander une configuration de ressources de canal dans un tti court

Country Status (2)

Country Link
CN (1) CN107689856B (fr)
WO (1) WO2018024193A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114073150A (zh) * 2019-08-15 2022-02-18 华为技术有限公司 控制信道传输方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104009831A (zh) * 2013-02-22 2014-08-27 电信科学技术研究院 用户专用解调参考信号传输和数据解调方法及设备
CN104272613A (zh) * 2012-04-30 2015-01-07 三星电子株式会社 在无线通信系统中发送/接收控制信道的方法和装置
CN104769871A (zh) * 2012-09-07 2015-07-08 三星电子株式会社 用于控制信道的控制信道元素的复用资源元素组
WO2016010379A1 (fr) * 2014-07-16 2016-01-21 엘지전자 주식회사 Procédé et dispositif d'estimation de voie dans un système de communication sans fil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104272613A (zh) * 2012-04-30 2015-01-07 三星电子株式会社 在无线通信系统中发送/接收控制信道的方法和装置
CN104769871A (zh) * 2012-09-07 2015-07-08 三星电子株式会社 用于控制信道的控制信道元素的复用资源元素组
CN104009831A (zh) * 2013-02-22 2014-08-27 电信科学技术研究院 用户专用解调参考信号传输和数据解调方法及设备
WO2016010379A1 (fr) * 2014-07-16 2016-01-21 엘지전자 주식회사 Procédé et dispositif d'estimation de voie dans un système de communication sans fil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114073150A (zh) * 2019-08-15 2022-02-18 华为技术有限公司 控制信道传输方法及装置

Also Published As

Publication number Publication date
CN107689856B (zh) 2020-06-05
CN107689856A (zh) 2018-02-13

Similar Documents

Publication Publication Date Title
CN106656446B (zh) 参考信号的发送方法及装置、接收方法及装置
KR102341103B1 (ko) 하향링크 제어 채널을 송신하는 방법, 하향링크 제어 채널을 검출 수신하는 방법 및 기기
US11375488B2 (en) Method for determining and configuring a resource used for transmitting downlink data, terminal and base station
WO2018141180A1 (fr) Procédé de transmission d'informations de commande, procédé de réception, dispositif, station de base et terminal
WO2018082420A1 (fr) Procédé et appareil de commande de surveillance et de surveillance avec un intervalle de temps de transmission court
EP2712254B1 (fr) Procédé et dispositif de transmission d'un canal de commande
CN107371252A (zh) 信息传输方法及装置
CN107027177B (zh) 一种下行控制信息的传输、检测方法及装置
CN109152045B (zh) 确定下行控制信道资源的方法、装置、用户设备及基站
WO2017167252A1 (fr) Procédé et terminal de transmission d'informations, et station de base
WO2018137688A1 (fr) Procédé de production et de réception de rs, et terminal et station de base
TW201826747A (zh) 資源映射的方法和通訊設備
WO2018126965A1 (fr) Procédé et appareil permettant de déterminer une ressource pour un signal de référence, et dispositif
WO2018024193A1 (fr) Procédé et appareil basés sur une démodulation de dmrs pour commander une configuration de ressources de canal dans un tti court
CN114223165A (zh) 一种确定重复传输资源的方法及装置
CN103181230A (zh) 控制信道的传输方法、装置及设备
CN108631996B (zh) 一种参考信号发送、接收方法及装置
CN107707340B (zh) 信道资源确定、资源映射方法及装置
US9444608B2 (en) Control channel transmission method and apparatus to implement transmission of ePDCCHs through an eREG in a unit physical resource block
CN103748849B (zh) 控制信道传输方法及基站、终端
WO2018127221A1 (fr) Procédé d'indication de ressources et dispositif associé
CN108418664B (zh) 信息指示方法、设备及系统
CN107371262B (zh) 一种上下行调度信息的发送、检测方法及装置
WO2017028071A1 (fr) Procédés et dispositifs de réception et d'envoi d'informations de commande de liaison descendante
CN104135356A (zh) 控制信道传输方法及设备

Legal Events

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

Ref document number: 17836375

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17836375

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 17836375

Country of ref document: EP

Kind code of ref document: A1