WO2016045531A1 - 设备间通信的资源配置方法以及基站和用户设备 - Google Patents

设备间通信的资源配置方法以及基站和用户设备 Download PDF

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Publication number
WO2016045531A1
WO2016045531A1 PCT/CN2015/089843 CN2015089843W WO2016045531A1 WO 2016045531 A1 WO2016045531 A1 WO 2016045531A1 CN 2015089843 W CN2015089843 W CN 2015089843W WO 2016045531 A1 WO2016045531 A1 WO 2016045531A1
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Prior art keywords
pscch
block pair
resource block
physical resource
information
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PCT/CN2015/089843
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English (en)
French (fr)
Inventor
张萌
蒋琦
刘仁茂
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Sharp Corp
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Sharp Corp
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Priority to US15/507,087 priority Critical patent/US9888505B2/en
Priority to EP15843333.4A priority patent/EP3174352B1/en
Priority to SG11201701496QA priority patent/SG11201701496QA/en
Publication of WO2016045531A1 publication Critical patent/WO2016045531A1/zh
Anticipated expiration legal-status Critical
Priority to US15/887,728 priority patent/US10314089B2/en
Priority to US16/428,448 priority patent/US20190289649A1/en
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • 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
    • 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 signalling, 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
    • H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • 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
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Definitions

  • the present invention relates to the field of wireless communication technologies. More specifically, the present invention relates to a resource configuration method for inter-device communication, and a base station and a user equipment.
  • the first feature is the high rate of broadband.
  • the fourth generation wireless mobile communication system has a bandwidth of up to 100 MHz and a downlink rate of up to 1 Gbps.
  • the second feature is mobile internet, which promotes emerging services such as mobile Internet access, mobile video on demand, and online navigation.
  • the standardization work of the 4GPP organization on the fourth generation of the fourth generation of wireless mobile communication systems (4G, the Fourth Generation) was also launched in the first half of 2008.
  • the system is called the advanced long-term evolution system (LTE-A, Long Term). Evolution Advanced).
  • LTE-A Long Term
  • Evolution Advanced Evolution Advanced
  • the key standardization work for the physical layer process of the system was completed in early 2011.
  • the ITU organization officially announced in Chongqing, China that the LTE-A system and the WiMax system are the two official standards for 4G systems.
  • the commercial process of the LTE-A system is gradually expanding worldwide.
  • the 3rd Generation Partnership Project (3GPP) organization discussed and adopted the device-to-device (D2D) communication technology as the key technology of the enhanced fourth-generation wireless mobile communication system at the 58th plenary meeting.
  • 3GPP 3rd Generation Partnership Project
  • D2D technology enables local or peer-to-peer peer-to-peer communication without access to the core network.
  • the transmission mode using D2D technology has a very positive effect in reducing the load on the base station and prolonging the battery life of the mobile terminal.
  • the scenario of the D2D user equipment can be divided as follows: under network coverage, without network coverage, and part of the network. Coverage, where some of the network coverage scenarios refer to D2D user equipments with network coverage and no network coverage.
  • D2D authorization information Grant
  • the authorization information there are 6 bits for indicating the time-frequency resource location occupied by the D2D PSCCH (Physical Sidelink Control Channel).
  • PSCCH Physical Sidelink Control Channel
  • the present invention provides a method for indicating a resource configuration of a D2D PSCCH by a base station to a user equipment, and a method for the user equipment to obtain the indication, and a corresponding base station and user equipment for performing the method.
  • a method of notifying a user equipment UE of a resource configuration for a device to device D2D PSCCH includes: generating D2D authorization information, where the D2D authorization information includes resource configuration indication information of a D2D PSCCH, where the resource configuration indication information of the PSCCH indicates a time-frequency location of a first physical resource block pair used for transmitting a PSCCH; And transmitting the D2D grant information to the UE, wherein a time-frequency location of a second physical resource block pair for transmitting a PSCCH can be derived according to a time-frequency location of the first physical resource block pair.
  • a method of obtaining a resource configuration for a device to device D2D PSCCH at a user equipment UE includes: receiving, by a base station, D2D authorization information, where the D2D authorization information includes resource configuration indication information of a D2D PSCCH, where the resource configuration indication information of the PSCCH indicates a time frequency of a first physical resource block pair used for transmitting a PSCCH Positioning; and parsing resource configuration indication information of the PSCCH from the D2D grant information to determine a first physical resource block pair and a second physical resource block pair for transmitting a D2D PSCCH, where the second The time-frequency locations of the physical resource block pairs are derived according to the time-frequency locations of the first physical resource block pair.
  • a base station including: a generating unit, configured to generate device-to-device D2D authorization information, where the D2D authorization information includes resource configuration indication information of a D2D PSCCH, and a resource configuration indication of the PSCCH Information indicating a time-frequency location of a first physical resource block pair for transmitting a PSCCH; and a transmitting unit configured to transmit the D2D grant information to the UE, wherein the second physical resource block pair for transmitting the PSCCH
  • the time-frequency location can be derived from the time-frequency location of the first pair of physical resource blocks.
  • a user equipment comprising: a receiving unit, configured to receive device-to-device D2D authorization information from a base station, where the D2D authorization information includes resource configuration indication information of a D2D PSCCH, the PSCCH
  • the resource configuration indication information indicates a time-frequency location of the first physical resource block pair used for transmitting the PSCCH
  • the parsing unit is configured to parse the resource configuration indication information of the PSCCH from the D2D authorization information to determine The first physical resource block pair and the second one for transmitting the D2D PSCCH a physical resource block pair, wherein a time-frequency location of the second physical resource block pair is derived according to a time-frequency location of the first physical resource block pair.
  • a method of notifying a user equipment UE of a resource configuration for a device to device D2D PSCCH includes: generating D2D authorization information, where the D2D authorization information includes resource configuration indication information of a D2D PSCCH, where the resource configuration indication information of the PSCCH indicates a first and a second physical resource block pair used for transmitting a PSCCH a time domain location and a frequency domain location of a first physical resource block pair; and transmitting the D2D grant information to the UE, wherein a frequency domain location of the second physical resource block pair is capable of being based on the first physical The frequency domain location of the resource block pair is derived.
  • a method of obtaining a resource configuration for a device-to-device D2D PSCCH at a user equipment UE includes: receiving D2D grant information from a base station, where the D2D grant information includes resource configuration indication information of a D2D PSCCH, and resource configuration indication information of the PSCCH indicates first and second physical resource blocks used for transmitting a PSCCH a time domain location of the pair and a frequency domain location of the first physical resource block pair; and parsing resource configuration indication information of the PSCCH from the D2D grant information to determine a first physical resource for transmitting the D2D PSCCH And a second physical resource block pair, wherein the frequency domain location of the second physical resource block pair is derived according to a frequency domain location of the first physical resource block pair.
  • a base station including: a generating unit, configured to generate device-to-device D2D authorization information, where the D2D authorization information includes resource configuration indication information of a D2D PSCCH, and a resource configuration indication of the PSCCH Information indicating a time domain location of a first and second physical resource block pair for transmitting a PSCCH and a frequency domain location of a first physical resource block pair; and a transmitting unit configured to send the D2D authorization to the UE Information, wherein a frequency domain location of the second physical resource block pair can be derived from a frequency domain location of the first physical resource block pair.
  • a user equipment UE including: a receiving unit, configured to receive device-to-device D2D authorization information from a base station, where the D2D authorization information includes resource configuration indication information of a D2D PSCCH, the PSCCH Resource configuration indication information indicating a time domain location of a first and a second physical resource block pair for transmitting a PSCCH and a frequency domain location of a first physical resource block pair; and a parsing unit configured to grant from the D2D
  • the resource configuration indication information of the PSCCH is parsed in the right information to determine a first physical resource block pair and a second physical resource block pair for transmitting the D2D PSCCH, where the frequency of the second physical resource block pair
  • the domain location is derived from the frequency domain location of the first physical resource block pair.
  • the D2D grant information is transmitted on the PDCCH or EPDCCH and is in DCI format 0.
  • the base station also scrambles the generated D2D grant information and transmits the scrambled D2D grant information to the user equipment.
  • the user equipment first scrambles the D2D authorization information, and then parses the resource allocation indication information of the PSCCH from the descrambled D2D authorization information.
  • the D2D grant information can be scrambled using D2D-RNTI.
  • Figure 1 shows a schematic diagram of a communication system in which the present invention can be applied
  • FIG. 2 shows a schematic diagram of a physical resource block pair for transmitting a PSCCH
  • FIG. 3 is a flowchart showing a method of notifying a user equipment UE of a resource configuration for a D2D PSCCH according to a first embodiment of the present invention
  • FIG. 4 shows a flow chart of a method of acquiring a resource configuration for a device-to-device D2D PSCCH at a user equipment UE according to a first embodiment of the present invention
  • FIG. 5 is a flowchart showing a method of notifying a user equipment UE of a resource configuration for a D2D PSCCH according to a second embodiment of the present invention
  • FIG. 6 shows a flow chart of a method of acquiring a resource configuration for a device-to-device D2D PSCCH at a user equipment UE according to a second embodiment of the present invention
  • Figure 7 shows an example of a PSCCH transmission pattern
  • Figure 8 shows another example of a PSCCH transmission pattern
  • FIG. 9 shows a schematic block diagram of a base station according to an embodiment of the present invention.
  • FIG. 10 shows a schematic block diagram of a user equipment according to an embodiment of the present invention.
  • the method for the base station to notify the user equipment UE of the resource configuration for the device-to-device D2D PSCCH, and the resource configuration for the device-to-device D2D PSCCH, are described in detail below with reference to the accompanying drawings and specific embodiments. And the corresponding base station and user equipment. It should be noted that the present invention should not be limited to the specific embodiments described below. In addition, detailed descriptions of well-known techniques that are not directly related to the present invention are omitted for the sake of brevity to prevent confusion of the understanding of the present invention.
  • the embodiments of the present invention are mainly directed to D2D communication under the coverage of a base station.
  • UE User Equipment
  • the LTE mobile communication system is hereinafter described as an example application environment, it should be understood that the present invention is not limited to the LTE environment, but may be applicable to other wireless communication systems that need to notify the UE of the resource configuration for the D2D PSCCH, such as future 5G cellular communication. System, etc.
  • FIG. 1 shows a schematic diagram of a communication system 30 in which the present invention may be applied.
  • System 30 includes a base station 10 and user equipment 20a and 20b. As shown, user equipment 20a can communicate with base station 10 within the coverage of base station 10. In addition, D2D communication is supported between user devices 20a and 20b. Although only one base station and two user equipments are shown in FIG. 1, it should be understood that system 30 can include more base stations and user equipment.
  • the important channels between the base station 10 and the user equipment 20a include a physical downlink control channel (PDCCH) and an enhanced physical downlink control channel (EPDCCH).
  • PDCCH physical downlink control channel
  • EPDCCH enhanced physical downlink control channel
  • the 3GPP specifies that the D2D grant information (Grant) corresponding to the D2D PSCCH can be transmitted using the PDCCH and the EPDCCH.
  • the authorization information there will be 6 bits for indicating the time-frequency resource location occupied by the D2D PSCCH.
  • PSCCH can be transmitted in two physical resource block pairs (PRB pairs) during a PSCCH transmission period.
  • Figure 2 shows a schematic diagram of a physical resource block pair for transmitting a PSCCH.
  • the first physical block pair can be determined by the time domain location first_nt and the frequency domain location first_nf
  • the second physical block pair can be determined by the time domain location second_nt and the frequency domain location second_nf.
  • FIG. 3 shows a flow diagram of a method 100 of notifying a user equipment UE of a resource configuration for a D2D PSCCH in accordance with a first embodiment of the present invention.
  • the base station In step S110, the base station generates D2D authorization information for the UE.
  • the D2D authorization information includes resource indication first indication information of the D2D PSCCH.
  • the first indication information indicates a frequency domain location (first_nf) and time of a first physical resource block pair used for transmitting a PSCCH Domain location (first_nt).
  • the first indication information does not include information indicating a frequency domain location and a time domain location where a second physical resource block pair for transmitting a PSCCH is located.
  • the frequency domain location and the time domain location of the second physical block pair may be implicitly obtained by the frequency domain location of the first physical resource block pair and the time domain subframe location.
  • the positional relationship between the second physical block pair and the first physical block pair may be semi-statically configured by RRC.
  • the frequency domain location first_nf of the first physical resource block pair may be obtained by dividing the first indication information by the quotient of the time domain resource indication Nt, and the first physical resource block is obtained.
  • the time domain location first_nt of the pair may be obtained by the remainder of the first indication information residing time domain resource indication Nt.
  • Nt may be a value related to the information PSCCH period (saPeriod) related to the RRC configured time domain resource.
  • the PSCCH period typically corresponds to several subframes.
  • Nt saPeriod/2
  • Nt may be related to the number of subframes M that can be actually allocated to the D2D PSCCH transmission in the subframe corresponding to the RRC-configured time domain resource related information saPeriod.
  • Nt M/2 can be specified
  • the time domain location first_nt of the first physical resource block pair may be obtained by dividing the first indication information by the frequency domain resource indication Nf, and the first physical resource is obtained.
  • the frequency domain location where the PRB pair is located may be obtained by the remainder obtained by the first indication information taking the residual frequency domain resource indication Nf.
  • the Nf may be a value related to the information saNumPRB related to the RRC configured frequency domain resource.
  • the length of the first indication information is 6 bits.
  • the base station transmits the generated D2D authorization information to the UE.
  • the D2D authorization information may be sent by using a PDCCH or an EPDCCH, and the transmission format corresponding to the D2D authorization information may be in a DCI format.
  • method 100 further includes a scrambling step. Specifically, the base station first scrambles the D2D authorization information generated in step 110, and then sends the addition to the user equipment in step S120. Disturbed D2ED authorization information.
  • the D2D authorization information may be scrambled using a D2D-RNTI (Radio Network Temporary Identifier).
  • D2D-RNTI Radio Network Temporary Identifier
  • FIG. 4 shows a flow diagram of a method 200 of obtaining a resource configuration for a device-to-device D2D PSCCH at a user equipment UE, in accordance with a first embodiment of the present invention.
  • the user equipment receives D2D authorization information from the base station.
  • the D2D authorization information includes resource indication first indication information of the D2D PSCCH.
  • the first indication information indicates a frequency domain location (first_nf) and a time domain location (first_nt) where the first physical resource block pair for transmitting the PSCCH is located.
  • step S220 the user equipment parses the resource configuration first indication information of the PSCCH from the received D2D authorization information to determine a first physical resource block pair and a second physical resource block for transmitting the D2D PSCCH. Correct.
  • the first indication information does not include information indicating a frequency domain location and a time domain location where a second physical resource block pair for transmitting a PSCCH is located.
  • the frequency domain location (second_nf) and the time domain location (second_nt) of the second physical block pair may be implicitly obtained by the frequency domain location of the first physical resource block pair and the time domain subframe position.
  • the positional relationship between the second physical block pair and the first physical block pair may be semi-statically configured by RRC.
  • the frequency domain location (second_nf) and the time domain location (second_nt) of the second physical block pair may be derived as follows:
  • Second_nt first_nt+Nt
  • Second_nf mod(first_nf+ceil(Nf/2),Nf);
  • the frequency domain location (second_nf) and the time domain location (second_nt) of the second physical block pair may be derived as follows:
  • Second_nt first_nt+Nt/2
  • Second_nf mod(first_nf+ceil(Nf), Nf*2).
  • first_nt and second_nt indicate the position of the subframe in which the PSCCH is transmitted in one saPeriod in all subframes, or the subframe in which the PSCCH is transmitted in one saPeriod in all subframes assignable to the D2D PSCCH (ie, the foregoing The position in M subframes).
  • method 200 further includes a descrambling step. If the user equipment is in step S210 Receiving the scrambled D2D authorization information, performing descrambling on the D2D, and then parsing the resource allocation first indication information of the PSCCH from the descrambled D2D authorization information in step S220.
  • FIG. 3 and FIG. 4 respectively illustrate operations performed at the base station and the UE according to the first embodiment of the present invention, the operations of which are corresponding, and thus the detailed operation of the method 200 will not be described again.
  • FIG. 5 shows a flow diagram of a method 300 of notifying a user equipment UE of a resource configuration for a D2D PSCCH in accordance with a second embodiment of the present invention.
  • the base station In step S310, the base station generates D2D authorization information for the UE.
  • the D2D authorization information includes resource indication second indication information of the D2D PSCCH.
  • the second indication information indicates a time domain location (first_nt and second_nt) of the first and second physical resource block pairs for transmitting the PSCCH and a frequency domain location (first_nf) of the first physical resource block pair.
  • the second indication information does not include information indicating a frequency domain location in which the second physical resource block pair for transmitting the PSCCH is located.
  • the frequency domain location of the second physical block pair may be implicitly obtained by the frequency domain location of the second physical resource block pair.
  • the relationship between the frequency domain location of the second physical block pair and the frequency domain location of the first physical block pair may be semi-statically configured by RRC.
  • a PSCCH pattern associated with X bits is predefined in the system.
  • the PSCCH transmission pattern can correspond to the T-RPT pattern of the data, as shown in FIG.
  • the PSCCH transmission pattern may correspond to a position of a sub-frame that can be used for PSCCH transmission indicated by saSubframeBitmap and saOffsetIndicator in SaPeriod, as shown in FIG.
  • 0 indicates that the marked subframe is not allocated for PSCCH transmission
  • 1 indicates that the marked subframe is allocated for PSCCH transmission.
  • the subframe indicated by saOffsetIndicator is not allowed to be used for transmitting the PSCCH even if it is marked as 1.
  • the length of X is 2 (the length of X can be configured by RRC or predefined by the system), then:
  • the saNumPRB allocated to the PSCCH transmission in the frequency domain is divided into 2 L groups, wherein the size of each group is rounded up by saNumPRB divided by 2 L.
  • Y 010, indicating that the first physical resource block pair of the PSCCH is transmitted in the third PRB pair group.
  • Y 011, indicating that the first physical resource block pair of the PSCCH is transmitted in the fourth PRB pair group.
  • Y 100, indicating that the first physical resource block pair of the PSCCH is transmitted in the fifth PRB pair group.
  • Y 101, indicating that the first physical resource block pair of the PSCCH is transmitted in the sixth PRB pair group.
  • Y 110, indicating that the first physical resource block pair of the PSCCH is transmitted in the seventh PRB pair group.
  • Y 111, indicating that the first physical resource block pair of the PSCCH is transmitted in the eighth PRB pair group.
  • which resource block in the group indicated by Y is used for PSCCH transmission (ie, the location of the first resource block in the indicated group) may be determined as follows:
  • the system can be pre-defined to transmit PSCCH only on the first PRB pair in the group or on a fixed PRB pair in each group.
  • the PCID offset corresponding to the cell where the UE is located may be obtained, for example, the remainder of the cell PCID mod 3 is the number of offset PRB pairs.
  • it may be obtained according to the UE's own C-RNTI offset, such as the remainder of the C-RNTI mod 3 being the offset PRB pair number.
  • it may be obtained according to a D2D-RNTI offset, such as the remainder of the D2D-RNTI mod 3 being the offset PRB pair number.
  • the base station transmits the generated D2D authorization information to the UE.
  • the D2D authorization information may be sent by using a PDCCH or an EPDCCH, and the transmission format corresponding to the D2D authorization information may be in a DCI format.
  • method 300 also includes a scrambling step. Specifically, the base station first scrambles the D2D authorization information generated in step 310, and then sends the addition to the user equipment in step S320. Disturbed D2ED authorization information.
  • the D2D authorization information may be scrambled using a D2D-RNTI (Radio Network Temporary Identifier).
  • D2D-RNTI Radio Network Temporary Identifier
  • FIG. 6 shows a flow diagram of a method 400 of obtaining a resource configuration for a device-to-device D2D PSCCH at a user equipment UE, in accordance with a second embodiment of the present invention.
  • the user equipment receives D2D authorization information from the base station.
  • the D2D authorization information includes resource indication second indication information of the D2D PSCCH.
  • the second indication information indicates a time domain location (first_nt and second_nt) of the first and second physical resource block pairs for transmitting the PSCCH and a frequency domain location (first_nf) of the first physical resource block pair.
  • step S420 the user equipment parses the resource configuration second indication information of the PSCCH from the received D2D grant information to determine a first physical resource block pair and a second physical resource block for transmitting the D2D PSCCH. Correct.
  • the second indication information does not include information indicating a frequency domain location in which the second physical resource block pair for transmitting the PSCCH is located.
  • the frequency domain location of the second physical block pair may be implicitly obtained by the frequency domain location of the second physical resource block pair.
  • the relationship between the frequency domain location of the second physical block pair and the frequency domain location of the first physical block pair may be semi-statically configured by RRC.
  • the frequency domain location (second_nf) of the second physical block pair can be derived as follows:
  • Second_nf mod(first_nf+ceil(Nf/2),Nf);
  • Second_nf mod(first_nf+ceil(Nf),Nf*2)
  • method 400 also includes a descrambling step. If the user equipment receives the scrambled D2D authorization information in step S410, performing descrambling on the D2D, and then parsing the resource allocation second indication of the PSCCH from the descrambled D2D authorization information in step S420. information.
  • 5 and 6 respectively illustrate operations performed at a base station and a UE according to a second embodiment of the present invention, the operations of which are corresponding, and thus the detailed operation of the method 400 will not be described again.
  • FIG. 9 shows a schematic block diagram of a base station according to an embodiment of the present invention.
  • the base station 10 can include a generating unit 12 and a transmitting unit 14.
  • the generating unit 12 is configured to generate D2D authorization information
  • the D2D authorization information includes resource configuration first indication information of the D2D PSCCH.
  • the first indication information indicates a time-frequency location of a first physical resource block pair used to transmit a PSCCH.
  • the generating unit 12 is configured to generate D2D authorization information, the D2D authorization information including resource configuration second indication information of the D2D PSCCH.
  • the second indication information indicates a time domain location of the first and second physical resource block pairs for transmitting the PSCCH and a frequency domain location of the first physical resource block pair.
  • the transmitting unit 14 is configured to send the D2D authorization information to the UE.
  • base station 10 may also include a scrambling unit.
  • the scrambling unit may be configured to scramble the D2D authorization information generated by the generating unit 12. Then, the transmitting unit 14 transmits the scrambled D2D authorization information to the user equipment.
  • the D2D authorization information may be scrambled using a D2D-RNTI (Radio Network Temporary Identifier).
  • D2D-RNTI Radio Network Temporary Identifier
  • FIG. 10 shows a schematic block diagram of a user equipment according to an embodiment of the present invention.
  • user device 20 can include receiving unit 22 and parsing unit 24.
  • the receiving unit 12 may be configured to receive device-to-device D2D grant information from the base station, the D2D grant information including resource configuration first indication information of the D2D PSCCH.
  • the first indication information indicates a time-frequency location of a first physical resource block pair used to transmit a PSCCH.
  • the receiving unit 12 may be configured to receive device-to-device D2D grant information from a base station, the D2D grant information including resource configuration second indication information of the D2D PSCCH.
  • the second indication information indicates a time domain location of the first and second physical resource block pairs for transmitting the PSCCH and a frequency domain location of the first physical resource block pair.
  • the parsing unit 24 is configured to parse resource configuration indication information (first indication information or second indication information) of the PSCCH from the D2D authorization information, to determine a first physical resource block pair and a second for transmitting the D2D PSCCH Physical resource block pairs.
  • user equipment 20 may also include a descrambling unit.
  • the descrambling unit is configured to descramble the D2D authorization information received by the receiving unit 12.
  • the parsing unit 24 is configured to parse the resource allocation indication information (first indication information or second indication information) of the PSCCH from the descrambled D2D grant information.
  • a base station according to an embodiment of the present invention may be configured to perform the above method 100 or 300.
  • a user equipment in accordance with an embodiment of the present invention may be configured to perform the methods 200 and 400 described above. here The operation will not be described again.
  • the above-described embodiments of the present invention can be implemented by software, hardware, or a combination of both software and hardware.
  • the base station and various components within the user equipment in the above embodiments may be implemented by various devices including, but not limited to, analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, and programmable processing. , Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), Programmable Logic Devices (CPLDs), and more.
  • ASICs Application Specific Integrated Circuits
  • FPGAs Field Programmable Gate Arrays
  • CPLDs Programmable Logic Devices
  • base station refers to a mobile communication data and control switching center having a large transmission power and a relatively large coverage area, including resource allocation scheduling, data reception and transmission, and the like.
  • User equipment refers to a user mobile terminal, for example, a terminal device including a mobile phone, a notebook, etc., which can perform wireless communication with a base station or a micro base station.
  • embodiments of the invention disclosed herein may be implemented on a computer program product.
  • the computer program product is a product having a computer readable medium encoded with computer program logic that, when executed on a computing device, provides related operations to implement The above technical solution of the present invention.
  • the computer program logic When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in the embodiments of the present invention.
  • Such an arrangement of the present invention is typically provided as software, code and/or other data structures, or such as one or more, that are arranged or encoded on a computer readable medium such as an optical medium (e.g., CD-ROM), floppy disk, or hard disk.
  • Software or firmware or such a configuration may be installed on the computing device such that one or more processors in the computing device perform the technical solutions described in the embodiments of the present invention.

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Abstract

本公开提供了基站向用户设备UE通知针对设备到设备D2D PSCCH的资源配置的方法以及相应的基站和用户设备。所述方法包括:生成D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个物理资源块对的时频位置;以及向所述UE发送所述D2D授权信息,其中用于传输PSCCH的第二个物理资源块对的时频位置能够根据所述第一个物理资源块对的时频位置导出。

Description

设备间通信的资源配置方法以及基站和用户设备 技术领域
本发明涉及无线通信技术领域。更具体地,本发明涉及设备间通信的资源配置方法以及基站和用户设备。
背景技术
现代无线移动通信系统呈现出两个显著特点。特点一是宽带高速率。比如第四代无线移动通信系统的带宽可达100MHz,下行速率可以高达1Gbps。特点二是移动互联,推动了移动上网、手机视频点播、在线导航等新兴业务。这两个特点对无线移动通信技术提出了较高要求,如:超高速率无线传输、区域间干扰抑制、在移动中可靠传输信号、支持分布式/集中式信号处理等等。在未来的增强的第四代(4G)及第五代(5G)无线移动通信系统中,需要满足上述发展需求。
在2007年10月,国际电信联盟(ITU)批准全球微波互联接入系统(WiMax,Worldwide Interoperability for Microwave Access)成为第四个3G系统标准。该事件实际上是4G标准争夺战的预演。事实上,为了应对以无线局域网和WiMax为代表的无线IP技术流的挑战,从2005年开始,第三代3GPP组织就着手进行全新的系统升级,即长期演进系统(LTE,Long Term Evolution)的标准化工作。这是一个基于正交频分复用技术(OFDM,Orthogonal Frequency Division Multiplexing)的准四代系统,已于2009年初推出第一版,并在2010年陆续在全球开始商用。与此同时,3GPP组织关于第四代无线移动通信系统(4G,the Fourth Generation)的标准化制定工作也已经于2008年上半年启动,该系统称为先进的长期演进系统(LTE-A,Long Term Evolution Advanced)。该系统的物理层过程的关键标准化工作已于2011年初完成。在2011年11月ITU组织在中国重庆正式宣布,LTE-A系统和WiMax系统是4G系统的两个官方标准。目前,LTE-A系统的商用过程正在全球范围逐步展开。
未来十年,对于增强的第四代无线移动通信系统,大致有以下几点发展需求:
-更高的无线宽带速率,且重点优化局部的小区热点区域;
-进一步提高用户体验,特别需要优化小区边界区域的通信服务;
-考虑到可用频谱不可能有1000倍的扩展,需要继续研究能够提高频谱利用效率的新技术;
-高频段的频谱(5GHz,甚至更高)将被投入使用,以获得较大的通信带宽;
-现有网络(2G/3G/4G,WLAN,WiMax等)之间的协同工作,以分担数据流量;
-针对不同业务、应用和服务特定优化;
-加强系统支持大规模机器通信的能力;
-灵活、智能且廉价的网络规划与布网;
-设计方案以节省网络的用电量和用户设备的电池消耗。
为了实现上述发展需求,国际第三代伙伴计划(3GPP)组织在第58次全会上讨论并通过了将设备到设备(D2D)通信技术作为增强的第四代无线移动通信系统的关键技术。
D2D技术可以实现本地通信或对等的点对点通信,而无需接入核心网络。采用D2D技术的传输方式,在减轻基站负载和延长移动终端电池的使用时间方面具有十分积极的作用。通常根据实现D2D传输的用户设备(以下称为D2D用户设备)所处的场景是否有宏基站的覆盖,可以将D2D用户设备的场景划分如下:有网络覆盖下、无网络覆盖下、以及部分网络覆盖,其中部分网络覆盖的场景是指包含有网络覆盖和无网络覆盖的D2D用户设备的情况。
目前针对D2D通信,特别是基站覆盖下的D2D通信,3GPP定义了D2D授权信息(Grant)。在该授权信息中,将有6个比特(bit)位用于指示D2D PSCCH(物理侧链路控制信道,Physical Sidelink Control Channel)所占用的时频资源位置。目前,针对如何有效利用此6bit来指示PSCCH所占用的时频资源位置,现有技术中还没有标准化的解决方案。
因此,需要一种利用此6bit向UE通知采用哪些时频资源传输D2D PSCCH的有效方案。
发明内容
为了实现上述目的,本发明提出了基站对用户设备的关于D2D PSCCH的资源配置指示方法和用户设备如何获得该指示的方法,以及执行所述方法的相应的基站和用户设备
根据本发明的第一方面,提供了一种向用户设备UE通知针对设备到设备D2D PSCCH的资源配置的方法。所述方法包括:生成D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个物理资源块对的时频位置;以及向所述UE发送所述D2D授权信息,其中用于传输PSCCH的第二个物理资源块对的时频位置能够根据所述第一个物理资源块对的时频位置导出。
根据本发明的第二方面,提供了一种在用户设备UE处获取针对设备到设备D2D PSCCH的资源配置的方法。所述方法包括:从基站接收D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个物理资源块对的时频位置;以及从所述D2D授权信息中解析出所述PSCCH的资源配置指示信息,以确定用于传输D2D PSCCH的第一个物理资源块对和第二个物理资源块对,其中所述第二个物理资源块对的时频位置是根据所述第一个物理资源块对的时频位置导出的。
根据本发明的第三方面,提供了一种基站,包括:生成单元,配置为生成设备到设备D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个物理资源块对的时频位置;以及发送单元,配置为向所述UE发送所述D2D授权信息,其中用于传输PSCCH的第二个物理资源块对的时频位置能够根据所述第一个物理资源块对的时频位置导出。
根据本发明的第四方面,提供了一种用户设备UE,包括:接收单元,配置为从基站接收设备到设备D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个物理资源块对的时频位置;以及解析单元,配置为从所述D2D授权信息中解析出所述PSCCH的资源配置指示信息,以确定用于传输D2D PSCCH的第一个物理资源块对和第二个 物理资源块对,其中所述第二个物理资源块对的时频位置是根据所述第一个物理资源块对的时频位置导出的。
根据本发明的第五方面,提供了一种向用户设备UE通知针对设备到设备D2D PSCCH的资源配置的方法。所述方法包括:生成D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个和第二个物理资源块对的时域位置和第一个物理资源块对的频域位置;以及向所述UE发送所述D2D授权信息,其中所述第二个物理资源块对的频域位置能够根据所述第一个物理资源块对的频域位置导出。
根据本发明的第六方面,提供了一种在用户设备UE处获取针对设备到设备D2D PSCCH的资源配置的方法。所述方法包括:从基站接收D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个和第二个物理资源块对的时域位置和第一个物理资源块对的频域位置;以及从所述D2D授权信息中解析出所述PSCCH的资源配置指示信息,以确定用于传输D2D PSCCH的第一个物理资源块对和第二个物理资源块对,其中所述第二个物理资源块对的频域位置是根据所述第一个物理资源块对的频域位置导出的。
根据本发明的第七方面,提供了一种基站,包括:生成单元,配置为生成设备到设备D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个和第二个物理资源块对的时域位置和第一个物理资源块对的频域位置;以及发送单元,配置为向所述UE发送所述D2D授权信息,其中所述第二个物理资源块对的频域位置能够根据所述第一个物理资源块对的频域位置导出。
根据本发明的第八方面,提供了一种用户设备UE,包括:接收单元,配置为从基站接收设备到设备D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个和第二个物理资源块对的时域位置和第一个物理资源块对的频域位置;以及解析单元,配置为从所述D2D授 权信息中解析出所述PSCCH的资源配置指示信息,以确定用于传输D2D PSCCH的第一个物理资源块对和第二个物理资源块对,其中所述第二个物理资源块对的频域位置是根据所述第一个物理资源块对的频域位置导出的。
在本发明的一些实施例中,所述D2D授权信息在PDCCH或者EPDCCH上传输,并且采用DCI格式0。
在本发明的一些实施例中,基站还对生成的D2D授权信息进行加扰,并且向用户设备发送加扰后的D2D授权信息。对应的,当用户设备接收到这种加扰的D2D授权信息后,先对其进行加扰,然后从解扰后的D2D授权信息中解析出PSCCH的资源配置指示信息。优选地,可以使用D2D-RNTI对D2D授权信息进行加扰。
附图说明
通过下文结合附图的详细描述,本发明的上述和其它特征将会变得更加明显,其中:
图1示出了可以在其中适用本发明的通信系统的示意图;
图2示出了用于传输PSCCH的物理资源块对的示意图;
图3示出了根据本发明的第一实施例的向用户设备UE通知针对D2D PSCCH的资源配置的方法的流程图;
图4示出了根据本发明的第一实施例的在用户设备UE处获取针对设备到设备D2D PSCCH的资源配置的方法的流程图;
图5示出了根据本发明的第二实施例的向用户设备UE通知针对D2D PSCCH的资源配置的方法的流程图;
图6示出了根据本发明的第二实施例的在用户设备UE处获取针对设备到设备D2D PSCCH的资源配置的方法的流程图;
图7示出了PSCCH传输图样的一个示例;
图8示出了PSCCH传输图样的另一个示例;
图9示出了根据本发明实施例的基站的示意框图;以及
图10示出了根据本发明实施例的用户设备的示意框图。
具体实施方式
以下将结合附图和具体实施例,详细阐述本发明所提出的基站向用户设备UE通知针对设备到设备D2D PSCCH的资源配置的方法,在用户设备UE处获取针对设备到设备D2D PSCCH的资源配置的方法,以及对应的基站和用户设备。应当注意,本发明不应局限于下文所述的具体实施例。另外,为了简便起见,省略了对与本发明没有直接关联的公知技术的详细描述,以防止对本发明的理解造成混淆。
本发明实施例主要针对基站覆盖下的D2D通信。在本文中,在提到用户设备(UE)时,指的是支持D2D通信的终端设备。尽管下文以LTE移动通信系统作为示例应用环境,但是应该理解,本发明不限于LTE环境,而是可适用于需要向UE通知针对D2D PSCCH的资源配置的其它无线通信系统,例如今后的5G蜂窝通信系统等。
图1示出了可以在其中适用本发明的通信系统30的示意图。系统30包括基站10和用户设备20a和20b。如图所示,用户设备20a在基站10的覆盖范围内,可以与基站10进行通信。此外,在用户设备20a和20b之间支持D2D通信。尽管图1中仅示出一个基站和两个用户设备,但是应该理解系统30可以包括更多的基站和用户设备。
在基站10和用户设备20a之间的重要信道包括:物理下行控制信道(PDCCH)和增强的物理下行控制信道(EPDCCH)。如前文所述,3GPP规定了可以利用PDCCH和EPDCCH来传输D2D PSCCH对应的D2D授权信息(Grant)。在该授权信息中,将有6个比特(bit)位用于指示D2D PSCCH所占用的时频资源位置。目前,3GPP规定在PSCCH传输周期中,可以在两个物理资源块对(PRB pair)中传输PSCCH。图2示出了用于传输PSCCH的物理资源块对的示意图。从图2中可以看出,第一物理块对可以由时域位置first_nt和频域位置first_nf来确定,第二物理块对可以由时域位置second_nt和频域位置second_nf来确定。
图3示出了根据本发明的第一实施例的向用户设备UE通知针对D2D PSCCH的资源配置的方法100的流程图。
在步骤S110中,基站生成针对UE的D2D授权信息。该D2D授权信息包含D2D PSCCH的资源配置第一指示信息。所述第一指示信息指示用于传输PSCCH的第一个物理资源块对所在的频域位置(first_nf)和时 域位置(first_nt)。
在该第一实施例中,所述第一指示信息并不包含指示用于传输PSCCH的第二个物理资源块对所在的频域位置和时域位置的信息。但是,第二个物理块对的频域位置和时域位置可以由第一个物理资源块对所在的频域位置及时域子帧位置隐性获得。第二物理块对和第一物理块对之间的位置关系可以通过RRC半静态地配置。
作为一个示例实现,该第一个物理资源块对所在的频域位置first_nf可以由所述第一指示信息除以时域资源指示Nt所得到的商下取整获得,而第一个物理资源块对所在的时域位置first_nt可以由所述第一指示信息取余时域资源指示Nt所得到的余数获得。
可选地,Nt可以是与RRC配置的时域资源相关的信息PSCCH周期(saPeriod)有关的值。该PSCCH周期通常对应于若干个子帧。
在该情况下,可以规定Nt=saPeriod/2;
或者,也可以规定Nt=saPeriod。
可选地,Nt可以与RRC配置的时域资源相关的信息saPeriod所对应的子帧中实际可分配给D2D PSCCH传输的子帧数M有关。
在这种情况下,可以规定Nt=M/2;
或者,也可以规定Nt=M。
作为另一个示例实现,该第一个物理资源块对所在的时域位置first_nt可以由所述第一指示信息除以频域资源指示Nf所得到的商下取整获得,而第一个物理资源块对(PRB pair)所在的频域位置可以由所述第一指示信息取余频域资源指示Nf所得到的余数获得。其中,Nf可以是与RRC配置的频域资源相关的信息saNumPRB有关的值。
例如,可以规定Nf=saNumPRB;
或者,也可以规定Nf=saNumPRB/2。
在具体实现中,所述第一指示信息的长度为6bit。
在步骤S120中,基站向UE发送所生成的D2D授权信息。例如,可以通过PDCCH或EPDCCH发送来发送所述D2D授权信息,并且该D2D授权信息对应的发送格式可以采用DCI格式0
优选地,方法100还包括加扰步骤。具体地,基站先对步骤110中生成的D2D授权信息进行加扰,然后在步骤S120中向用户设备发送加 扰后的D2ED授权信息。优选地,可以利用D2D-RNTI(无线网络临时标识符)对D2D授权信息进行加扰。
图4示出了根据本发明的第一实施例的在用户设备UE处获取针对设备到设备D2D PSCCH的资源配置的方法200的流程图。
在步骤S210中,用户设备从基站接收D2D授权信息。该D2D授权信息包含D2D PSCCH的资源配置第一指示信息。所述第一指示信息指示用于传输PSCCH的第一个物理资源块对所在的频域位置(first_nf)和时域位置(first_nt)。
在步骤S220中,用户设备从所接收的D2D授权信息中解析出所述PSCCH的资源配置第一指示信息,以确定用于传输D2D PSCCH的第一个物理资源块对和第二个物理资源块对。
如前所述,在该第一实施例中,所述第一指示信息并不包含指示用于传输PSCCH的第二个物理资源块对所在的频域位置和时域位置的信息。但是,第二个物理块对的频域位置(second_nf)和时域位置(second_nt)可以由第一个物理资源块对所在的频域位置及时域子帧位置隐性获得。第二物理块对和第一物理块对之间的位置关系可以通过RRC半静态地配置。
作为一个示例实现,可以如下导出第二个物理块对的频域位置(second_nf)和时域位置(second_nt):
second_nt=first_nt+Nt,且
second_nf=mod(first_nf+ceil(Nf/2),Nf);
作为另一个示例实现,可以如下导出第二个物理块对的频域位置(second_nf)和时域位置(second_nt):
second_nt=first_nt+Nt/2,
second_nf=mod(first_nf+ceil(Nf),Nf*2)。
此处,first_nt和second_nt表示在一个saPeriod中传输PSCCH的子帧在所有子帧中的位置,或者表示在一个saPeriod中传输PSCCH的子帧在所有的可分配给D2D PSCCH的子帧(即,前述M个子帧)中的位置。
优选地,方法200还包括解扰步骤。如果用户设备在步骤S210中 接收的是加扰的D2D授权信息,则先对D2D执行解扰,然后在步骤S220中从解扰后的D2D授权信息中解析出所述PSCCH的资源配置第一指示信息。
图3和图4分别示出了根据本发明的第一实施例在基站和UE处执行的操作,两者的操作是对应的,因此不再对方法200的详细操作进行赘述。
图5示出了根据本发明的第二实施例的向用户设备UE通知针对D2D PSCCH的资源配置的方法300的流程图。
在步骤S310中,基站生成针对UE的D2D授权信息。该D2D授权信息包含D2D PSCCH的资源配置第二指示信息。所述第二指示信息指示用于传输PSCCH的第一个和第二个物理资源块对的时域位置(first_nt和second_nt)和第一个物理资源块对的频域位置(first_nf)。
根据本发明的第二实施例,所述第二指示信息并不包含指示用于传输PSCCH的第二个物理资源块对所在的频域位置的信息。但是,第二个物理块对的频域位置可以由第二个物理资源块对所在的频域位置隐性获得。第二物理块对的频域位置和第一物理块对的频域位置之间的关系可以通过RRC半静态地配置。
所述第二指示信息中的前(或者后)X个bit用于first_nt和second_nt的指示,而后(或这前)Y个bit用于first_nf的指示,其中X+Y=6。
在该第二实施例中,系统中预定义与X个bit相关联的PSCCH传输图样(PSCCH pattern)。PSCCH传输图样可以对应于数据的T-RPT图样,如图7所示。或者,PSCCH传输图样可以对应于SaPeriod中通过saSubframeBitmap和saOffsetIndicator指示出的可以用于PSCCH传输的子帧的位置,如图8所示。在图7和图8中,0表示在所标记的子帧没有分配给PSCCH传输,1表示所标记的子帧分配给PSCCH传输。此外,在图8中,saOffsetIndicator所指示的子帧即使标记为1也不允许用于传输PSCCH。
作为一个示例实现,若X的长度为2(X的长度可以通过RRC配置或由系统预先定义),则:
X=00可以表示在PSCCH pattern中,连续的3个分配给PSCCH传输的子帧中,第1个和第2个用于PSCCH的传输。
X=01可以表示在PSCCH pattern中,连续的3个分配给PSCCH传输的子帧中,第1个和第3个用于PSCCH的传输。
X=10可以表示在PSCCH pattern中,连续的3个分配给PSCCH传输的子帧中,第2个和第3个用于PSCCH的传输。
X=11不使用。
作为另一个示例实现,若X的长度为3(此长度可以通过RRC配置或由系统预先定义),则:
X=000可以表示在PSCCH pattern中,连续的4个分配给PSCCH传输的子帧中,第1个和第2个用于PSCCH的传输。
X=001可以表示在PSCCH pattern中,连续的4个分配给PSCCH传输的子帧中,第1个和第3个用于PSCCH的传输。
X=010可以表示在PSCCH pattern中,连续的4个分配给PSCCH传输的子帧中,第1个和第4个用于PSCCH的传输。
X=011可以表示在PSCCH pattern中,连续的4个分配给PSCCH传输的子帧中,第2个和第3个用于PSCCH的传输。
X=100可以表示在PSCCH pattern中,连续的4个分配给PSCCH传输的子帧中,第2个和第4个用于PSCCH的传输。
X=101可以表示在PSCCH pattern中,连续的4个分配给PSCCH传输的子帧中,第3个和第4个用于PSCCH的传输。
X=110和X=111不使用。
作为又一个示例实现,若X的长度为4(此长度可以通过RRC配置或由系统预先定义),则:
X=0000可以表示在PSCCH pattern中,连续的6个分配给PSCCH传输的子帧中,第1个和第2个用于PSCCH的传输。
X=0001可以表示在PSCCH pattern中,连续的6个分配给PSCCH传输的子帧中,第1个和第3个用于PSCCH的传输。
X=0010可以表示在PSCCH pattern中,连续的6个分配给PSCCH传输的子帧中,第1个和第4个用于PSCCH的传输。
X=0011可以表示在PSCCH pattern中,连续的6个分配给PSCCH传输的子帧中,第1个和第5个用于PSCCH的传输。
X=0100可以表示在pattern中,连续的6个分配给传输的子帧中, 第1个和第6个用于PSCCH的传输。
X=0101可以表示在PSCCH pattern中,连续的6个分配给PSCCH传输的子帧中,第2个和第3个用于PSCCH的传输。
X=0110可以表示在PSCCH pattern中,连续的6个分配给PSCCH传输的子帧中,第2个和第4个用于PSCCH的传输。
X=0111可以表示在PSCCH pattern中,连续的6个分配给PSCCH传输的子帧中,第2个和第5个用于PSCCH的传输。
X=1000可以表示在PSCCH pattern中,连续的6个分配给PSCCH传输的子帧中,第2个和第6个用于PSCCH的传输。
X=1001可以表示在PSCCH pattern中,连续的6个分配给PSCCH传输的子帧中,第3个和第4个用于PSCCH的传输。
X=1010可以表示在PSCCH pattern中,连续的6个分配给PSCCH传输的子帧中,第3个和第5个用于PSCCH的传输。
X=1011可以表示在PSCCH pattern中,连续的6个分配给PSCCH传输的子帧中,第3个和第6个用于PSCCH的传输。
X=1100可以表示在PSCCH pattern中,连续的6个分配给PSCCH传输的子帧中,第4个和第5个用于PSCCH的传输。
X=1101可以表示在PSCCH pattern中,连续的6个分配给PSCCH传输的子帧中,第4个和第6个用于PSCCH的传输。
X=1110可以表示在PSCCH pattern中,连续的6个分配给PSCCH传输的子帧中,第5个和第6个用于PSCCH的传输。
X=1111不使用。
根据本发明的第二实施例,若X的长度为K,Y的长度为L=6-K,则:
作为一个实现方式,将频域中分配给PSCCH传输的saNumPRB分成2L个组,其中每个组的大小为saNumPRB除以2L下取整。并用长度为L的bitmap来指示这2L个PRB pair组里,哪个组用于PSCCH的第一个物理资源块对的传输。举例来说,若X的长度为3,Y的长度为3,且saNumPRB=40,则可以将整个分配给PSCCH的频域资源分成23=8个组,每个组的大小为40/23=5。
于是可以Y的值可以设计如下:
Y=000,表示PSCCH的第1个物理资源块对在第1个PRB pair组中传输。
Y=001,表示PSCCH的第1个物理资源块对在第2个PRB pair组中传输。
Y=010,表示PSCCH的第1个物理资源块对在第3个PRB pair组中传输。
Y=011,表示PSCCH的第1个物理资源块对在第4个PRB pair组中传输。
Y=100,表示PSCCH的第1个物理资源块对在第5个PRB pair组中传输。
Y=101,表示PSCCH的第1个物理资源块对在第6个PRB pair组中传输。
Y=110,表示PSCCH的第1个物理资源块对在第7个PRB pair组中传输。
Y=111,表示PSCCH的第1个物理资源块对在第8个PRB pair组中传输。
具体地,Y所指示的组中的哪个资源块被用于PSCCH传输(即第一资源块在所指示的组中的位置)可以按照如下规定来确定:
作为一个示例实现,系统可以预定义,只在组中的第一个PRB pair上或者在每组的某个固定的PRB pair上传输PSCCH。
作为另一个示例实现,可以根据UE所处小区对应的PCID偏移获得,如小区PCID mod 3的余数为偏移的PRB pair数。
作为又一个示例实现,可以根据UE自己的C-RNTI偏移获得,如C-RNTI mod 3的余数为偏移的PRB pair数。
作为又一个示例实现,可以根据D2D-RNTI偏移获得,如D2D-RNTI mod 3的余数为偏移的PRB pair数。
在步骤S320中,基站向UE发送所生成的D2D授权信息。例如,可以通过PDCCH或EPDCCH发送来发送所述D2D授权信息,并且该D2D授权信息对应的发送格式可以采用DCI格式0
优选地,方法300还包括加扰步骤。具体地,基站先对步骤310中生成的D2D授权信息进行加扰,然后在步骤S320中向用户设备发送加 扰后的D2ED授权信息。优选地,可以利用D2D-RNTI(无线网络临时标识符)对D2D授权信息进行加扰。
图6示出了根据本发明的第二实施例的在用户设备UE处获取针对设备到设备D2D PSCCH的资源配置的方法400的流程图。
在步骤S410中,用户设备从基站接收D2D授权信息。该D2D授权信息包含D2D PSCCH的资源配置第二指示信息。所述第二指示信息指示用于传输PSCCH的第一个和第二个物理资源块对的时域位置(first_nt和second_nt)和第一个物理资源块对的频域位置(first_nf)。
在步骤S420中,用户设备从所接收的D2D授权信息中解析出所述PSCCH的资源配置第二指示信息,以确定用于传输D2D PSCCH的第一个物理资源块对和第二个物理资源块对。
如前所述,根据本发明的第二实施例,所述第二指示信息并不包含指示用于传输PSCCH的第二个物理资源块对所在的频域位置的信息。但是,第二个物理块对的频域位置可以由第二个物理资源块对所在的频域位置隐性获得。第二物理块对的频域位置和第一物理块对的频域位置之间的关系可以通过RRC半静态地配置。
作为一个示例实现,可以如下导出第二个物理块对的频域位置(second_nf):
second_nf=mod(first_nf+ceil(Nf/2),Nf);
或者:
second_nf=mod(first_nf+ceil(Nf),Nf*2);
优选地,方法400还包括解扰步骤。如果用户设备在步骤S410中接收的是加扰的D2D授权信息,则先对D2D执行解扰,然后在步骤S420中从解扰后的D2D授权信息中解析出所述PSCCH的资源配置第二指示信息。
图5和图6分别示出了根据本发明的第二实施例在基站和UE处执行的操作,两者的操作是对应的,因此不再对方法400的详细操作进行赘述。
图9示出了根据本发明实施例的基站的示意框图。如图所示,基站10可以包括生成单元12和发送单元14。
根据本发明的第一实施例,生成单元12配置为生成D2D授权信息, 所述D2D授权信息包含D2D PSCCH的资源配置第一指示信息。所述第一指示信息指示用于传输PSCCH的第一个物理资源块对的时频位置。
根据本发明的第二实施例,生成单元12配置为生成D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置第二指示信息。所述第二指示信息指示用于传输PSCCH的第一个和第二个物理资源块对的时域位置和第一个物理资源块对的频域位置。
发送单元14配置为向所述UE发送所述D2D授权信息。
优选地,基站10还可以包括加扰单元。加扰单元可以配置为对生成单元12生成的D2D授权信息进行加扰。于是,发送单元14向用户设备发送加扰后的D2D授权信息。优选地,可以利用D2D-RNTI(无线网络临时标识符)对D2D授权信息进行加扰。
图10示出了根据本发明实施例的用户设备的示意框图。如图所示,用户设备20可以包括接收单元22和解析单元24。
根据本发明的第一实施例,接收单元12可以配置为从基站接收设备到设备D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置第一指示信息。所述第一指示信息指示用于传输PSCCH的第一个物理资源块对的时频位置。
根据本发明的第二实施例,接收单元12可以配置为从基站接收设备到设备D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置第二指示信息。所述第二指示信息指示用于传输PSCCH的第一个和第二个物理资源块对的时域位置和第一个物理资源块对的频域位置。
解析单元24配置为从所述D2D授权信息中解析出PSCCH的资源配置指示信息(第一指示信息或者第二指示信息),以确定用于传输D2D PSCCH的第一个物理资源块对和第二个物理资源块对。
优选地,用户设备20还可以包括解扰单元。解扰单元配置为对接收单元12接收的D2D授权信息进行解扰。于是解析单元24配置为从解扰后的D2D授权信息中解析出PSCCH的资源配置指示信息(第一指示信息或者第二指示信息)。
根据本发明实施例的基站可以配置为执行上述方法100或300。根据本发明实施例的用户设备可以配置为执行上述方法200和400。在此 不再对其操作进行赘述。
应该理解,本发明的上述实施例可以通过软件、硬件或者软件和硬件两者的结合来实现。例如,上述实施例中的基站和用户设备内部的各种组件可以通过多种器件来实现,这些器件包括但不限于:模拟电路器件、数字电路器件、数字信号处理(DSP)电路、可编程处理器、专用集成电路(ASIC)、现场可编程门阵列(FPGA)、可编程逻辑器件(CPLD),等等。
在本申请中,“基站”是指具有较大发射功率和较广覆盖面积的移动通信数据和控制交换中心,包括资源分配调度、数据接收发送等功能。“用户设备”是指用户移动终端,例如包括移动电话、笔记本等可以与基站或者微基站进行无线通信的终端设备。
此外,这里所公开的本发明的实施例可以在计算机程序产品上实现。更具体地,该计算机程序产品是如下的一种产品:具有计算机可读介质,计算机可读介质上编码有计算机程序逻辑,当在计算设备上执行时,该计算机程序逻辑提供相关的操作以实现本发明的上述技术方案。当在计算系统的至少一个处理器上执行时,计算机程序逻辑使得处理器执行本发明实施例所述的操作(方法)。本发明的这种设置典型地提供为设置或编码在例如光介质(例如CD-ROM)、软盘或硬盘等的计算机可读介质上的软件、代码和/或其他数据结构、或者诸如一个或多个ROM或RAM或PROM芯片上的固件或微代码的其他介质、或一个或多个模块中的可下载的软件图像、共享数据库等。软件或固件或这种配置可安装在计算设备上,以使得计算设备中的一个或多个处理器执行本发明实施例所描述的技术方案。
尽管以上已经结合本发明的优选实施例示出了本发明,但是本领域的技术人员将会理解,在不脱离本发明的精神和范围的情况下,可以对本发明进行各种修改、替换和改变。因此,本发明不应由上述实施例来限定,而应由所附权利要求及其等价物来限定。

Claims (27)

  1. 一种向用户设备UE通知针对设备到设备D2D物理侧链路控制信道PSCCH的资源配置的方法,包括:
    生成D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个物理资源块对的时频位置;以及
    向所述UE发送所述D2D授权信息,
    其中用于传输PSCCH的第二个物理资源块对的时频位置能够根据所述第一个物理资源块对的时频位置导出。
  2. 根据权利要求1所述的方法,其中,所述D2D授权信息是在PDCCH或者EPDCCH上发送,并且采用DCI格式0。
  3. 根据权利要求1所述的方法,其中,用于传输PSCCH的第一个物理资源块对的频域位置通过由PSCCH的资源配置指示信息除以Nt所得的商向下取整来确定,其中Nt是由RRC配置的与PSCCH周期相关的信息。
  4. 根据权利要求3所述的方法,其中,所述Nt的取值等于PSCCH周期,其中所述PSCCH周期由RRC配置。
  5. 根据权利要求1-4中任一项所述的方法,其中,用于传输PSCCH的第一个物理资源块对的时域位置通过由PSCCH的资源配置指示信息取余Nt得到的余数来确定,其中Nt是由RRC配置的与PSCCH周期相关的信息。
  6. 根据权利要求1-4中任一项所述的方法,还包括:在发送步骤之前,对所述D2D授权信息进行加扰。
  7. 一种在用户设备UE处获取针对设备到设备D2D PSCCH的资源配置的方法,包括:
    从基站接收D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个物理资源块对的时频位置;以及
    从所述D2D授权信息中解析出所述PSCCH的资源配置指示信息, 以确定用于传输D2D PSCCH的第一个物理资源块对和第二个物理资源块对,
    其中所述第二个物理资源块对的时频位置是根据所述第一个物理资源块对的时频位置导出的。
  8. 根据权利要求7所述的方法,其中,所述D2D授权信息是在PDCCH或者EPDCCH上接收,并且采用DCI格式0。
  9. 根据权利要求7或8所述的方法,还包括:在解析步骤之前,对所接收的D2D授权信息进行解扰。
  10. 一种基站,包括:
    生成单元,配置为生成设备到设备D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个物理资源块对的时频位置;以及
    发送单元,配置为向所述UE发送所述D2D授权信息,
    其中用于传输PSCCH的第二个物理资源块对的时频位置能够根据所述第一个物理资源块对的时频位置导出。
  11. 根据权利要求10所述的基站,其中,所述D2D授权信息在PDCCH或者EPDCCH上发送,并且采用DCI格式0。
  12. 根据权利要求10或11所述的基站,还包括:加扰单元,配置为对生成的D2D授权信息进行加扰。
  13. 一种用户设备UE,包括:
    接收单元,配置为从基站接收设备到设备D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个物理资源块对的时频位置;以及
    解析单元,配置为从所述D2D授权信息中解析出所述PSCCH的资源配置指示信息,以确定用于传输D2D PSCCH的第一个物理资源块对和第二个物理资源块对,
    其中所述第二个物理资源块对的时频位置是根据所述第一个物理资源块对的时频位置导出的。
  14. 根据权利要求13所述的UE,其中,所述D2D授权信息是在 PDCCH或者EPDCCH上接收的,并且采用DCI格式0。
  15. 根据权利要求13或14所述的UE,还包括:解扰单元,配置为对所接收的D2D授权信息进行解扰。
  16. 一种向用户设备UE通知针对设备到设备D2D PSCCH的资源配置的方法,包括:
    生成D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个和第二个物理资源块对的时域位置和第一个物理资源块对的频域位置;以及
    向所述UE发送所述D2D授权信息,
    其中所述第二个物理资源块对的频域位置能够根据所述第一个物理资源块对的频域位置导出。
  17. 根据权利要求16所述的方法,其中,所述D2D授权信息在PDCCH或者EPDCCH上发送,并且采用DCI格式0。
  18. 根据权利要求16或17所述的方法,还包括:在发送步骤之前,对所述D2D授权信息进行加扰。
  19. 一种在用户设备UE处获取针对设备到设备D2D PSCCH的资源配置的方法,包括:
    从基站接收D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个和第二个物理资源块对的时域位置和第一个物理资源块对的频域位置;以及
    从所述D2D授权信息中解析出所述PSCCH的资源配置指示信息,以确定用于传输D2D PSCCH的第一个物理资源块对和第二个物理资源块对,
    其中所述第二个物理资源块对的频域位置是根据所述第一个物理资源块对的频域位置导出的。
  20. 根据权利要求19所述的方法,其中,所述D2D授权信息是在PDCCH或者EPDCCH上接收的,并且采用DCI格式0。
  21. 根据权利要求19或20所述的方法,还包括:在解析步骤之前, 对所接收的D2D授权信息进行解扰。
  22. 一种基站,包括:
    生成单元,配置为生成设备到设备D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个和第二个物理资源块对的时域位置和第一个物理资源块对的频域位置;以及
    发送单元,配置为向所述UE发送所述D2D授权信息,
    其中所述第二个物理资源块对的频域位置能够根据所述第一个物理资源块对的频域位置导出。
  23. 根据权利要求22所述的基站,其中,所述D2D授权信息在PDCCH或者EPDCCH上发送,并且采用DCI格式0。
  24. 根据权利要求22或23所述的基站,还包括:加扰单元,配置为对生成的D2D授权信息进行加扰。
  25. 一种用户设备UE,包括:
    接收单元,配置为从基站接收设备到设备D2D授权信息,所述D2D授权信息包含D2D PSCCH的资源配置指示信息,所述PSCCH的资源配置指示信息指示用于传输PSCCH的第一个和第二个物理资源块对的时域位置和第一个物理资源块对的频域位置;以及
    解析单元,配置为从所述D2D授权信息中解析出所述PSCCH的资源配置指示信息,以确定用于传输D2D PSCCH的第一个物理资源块对和第二个物理资源块对,
    其中所述第二个物理资源块对的频域位置是根据所述第一个物理资源块对的频域位置导出的。
  26. 根据权利要求25所述的UE,其中,所述D2D授权信息是在PDCCH或者EPDCCH上接收的,并且采用DCI格式0。
  27. 根据权利要求25或26所述的UE,还包括:解扰单元,配置为对所接收的D2D授权信息进行解扰。
PCT/CN2015/089843 2014-09-22 2015-09-17 设备间通信的资源配置方法以及基站和用户设备 Ceased WO2016045531A1 (zh)

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US15/887,728 US10314089B2 (en) 2014-09-22 2018-02-02 Method performed by a user equipment, method performed by an enodeb, user equipment and enodeb
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US20170280489A1 (en) 2017-09-28
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