WO2014000507A1 - Procédé et dispositif pour indiquer des ressources de canal - Google Patents

Procédé et dispositif pour indiquer des ressources de canal Download PDF

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Publication number
WO2014000507A1
WO2014000507A1 PCT/CN2013/075103 CN2013075103W WO2014000507A1 WO 2014000507 A1 WO2014000507 A1 WO 2014000507A1 CN 2013075103 W CN2013075103 W CN 2013075103W WO 2014000507 A1 WO2014000507 A1 WO 2014000507A1
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WIPO (PCT)
Prior art keywords
epdcch
location
resource indication
resource
indication field
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PCT/CN2013/075103
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English (en)
Chinese (zh)
Inventor
张兴炜
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华为技术有限公司
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Publication of WO2014000507A1 publication Critical patent/WO2014000507A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • 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
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a channel resource indication method and device.
  • LTE-A Rel-10/11 Long Term Evolution-Advance Rel-10/11, Advanced Long Term Evolution 10/11
  • CA Carrier Aggregation
  • the base station carries the scheduling grant information on the PDCCH (Physical Downlink Control CHannel) for scheduling the PDSCH (Physical Downlink Shared Channel) and the PUSCH. (Physical Uplink Shared CHannel).
  • the PDCCH is generally configured in the first 1-3 symbols of one subframe, and each PDCCH is transmitted using one or more CCEs (Control Channel Element).
  • the number of CCEs used by the PDCCH is called AL (Aggregation Level), and AL can be 1, 2, 4 or 8.
  • Due to UE User Equipment, user equipment
  • UE User Equipment, user equipment
  • the AL of the PDCCH corresponding to the DCI sent to itself and does not know the specific location of the PDCCH corresponding to the DCI sent to itself. Therefore, the UE needs to pass blind detection to determine the DCI sent to itself. The location of the corresponding PDCCH.
  • the information carried in the PDCCH is referred to as DCI (downlink control information), and the DCI includes information such as resource allocation and modulation and demodulation methods of the PDSCH or the PUSCH.
  • the DCI Format 0/4 is used to schedule the PUSCH, which is called the uplink scheduling grant command (UL grant), and the DCI Format 1/1A/1B/1C/1D/2/2A/2B/2C is used to schedule the PDSCH, which is called downlink scheduling.
  • the grant command (DL grant), DCI Format 3/3A is then used to indicate the closed loop power control commands for a group of UEs.
  • Type 0 The basic idea of Type 0 is to form a plurality of RB blocks (Resource Blocks) into one RBG (Resource Block Grou).
  • the bit map is used to indicate resource allocation, so that lbit corresponds to one RBG, which is used to indicate Whether the RBG is assigned to the UE.
  • the size of the RBG (that is, the number of RB blocks in the RBG) is represented by P, and the value of P is related to the system bandwidth. For example, N ⁇ indicates that the DL (downlink) system bandwidth (specifically, the number of resource blocks RBs included) is 26, and P is 2, then the number of RBGs is 13.
  • Type 1 also uses a bitmap to indicate resource allocation. However, unlike Type 0, Type 1 divides the RB into different subsets by parity, and then uses bitmap to indicate whether the RB in a subset is allocated to the UE.
  • Type 2 is a centralized distribution method, assigned to a certain UE-segment continuous RB; Type2
  • the indicated information includes a starting location of the time-frequency resource allocated to the UE and a length of the time-frequency resource.
  • an ePDCCH Enhanced Physical Downlink Control Channel
  • the ePDCCH is multiplexed with the PDSCH by means of FDM (Frequency Division Multiplexing).
  • the information of the ePDCCH may be indicated by a secondary PDCCH or by high layer signaling.
  • the PDCCH indication belongs to the dynamic indication, and the PDCCH of the current subframe may indicate the location of the ePDCCH of the current subframe.
  • the high-level signaling (such as MAC CE or RRC signaling indication) is a semi-static indication, and it takes a long time to update the indication information.
  • the existing resource allocation modes for the PDSCH do not apply to the indication of the ePDCCH.
  • the main problems are as follows:
  • the current time-frequency resource indication mode of the three types of PDSCH can only indicate the RB or RBG level, and the ePDCCH can only occupy part of the CCE in one RB, that is, one RB can be complexed by the ePDCCH of multiple UEs.
  • the existing resource indication mode the exact location of the ePDCCH cannot be known.
  • the UE can obtain the ePDCCH by blind detection even if the precise location is not indicated, the blind detection is relatively power-consuming, and if accurate indication can be performed, the power consumption of the UE will be saved.
  • aspects of the embodiments of the present invention provide a channel resource indication method and device, which can reduce the overhead of indicating control signaling of the ePDCCH, and save power consumption of the user equipment.
  • An aspect of the embodiments of the present invention provides a channel resource indication method, including:
  • the channel resource indication information includes a Y-bit resource indication field; the resource indication field is used to indicate a location of a resource used by the ePDCCH; Y is a positive integer.
  • Another aspect of the embodiments of the present invention provides a channel resource indication method, including: receiving channel resource indication information of an enhanced physical downlink control channel ePDCCH sent by a base station, where the channel resource indication information includes a resource indicator field of Y bits The resource indication field is used to indicate a location of a resource used by the ePDCCH; Y is a positive integer;
  • a base station including:
  • an indication acquiring unit configured to acquire channel resource indication information of the enhanced physical downlink control channel ePDCCH;
  • an indication sending unit configured to send the channel resource indication information to the user equipment
  • the channel resource indication information includes a Y-bit resource indication field; the resource indication field is used to indicate a location of a resource used by the ePDCCH; and Y is a positive integer.
  • a user equipment including:
  • the indication receiving unit is configured to receive channel resource indication information of the enhanced physical downlink control channel (ePDCCH) sent by the base station, where the channel resource indication information includes a Y-bit resource indication field, and the resource indication field is used to indicate the ePDCCH The location of the resource used; Y is a positive integer; and,
  • a resource determining unit configured to determine, according to the channel resource indication information, a resource used by the ePDCCH.
  • the channel resource indication method, the base station, and the user equipment provided by the embodiment of the present invention use the channel resource indication information to indicate the location of the resource used by the ePDCCH, and can reduce the control used to indicate the ePDCCH.
  • the signaling overhead is reduced, and the number of times the user equipment performs blind detection on the ePDCCH is reduced, thereby saving power consumption of the user equipment.
  • FIG. 1 is a schematic diagram of multiplexing an ePDCCH and a PDSCH in the prior art
  • FIG. 2 is a schematic flowchart of a channel resource indication method according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of another method for indicating a channel resource according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of an embodiment of a resource determining unit of the user equipment shown in FIG. 5;
  • FIG. 7 is a schematic structural diagram of another embodiment of a resource determining unit of the user equipment shown in FIG.
  • Fig. 8 is a block diagram showing the configuration of still another embodiment of the resource determining unit of the user equipment shown in Fig. 5.
  • this embodiment provides a channel resource indication method, including the following steps:
  • the channel resource indication information includes a Y-bit resource indication field; the resource indication field is used to indicate a location of a resource used by the ePDCCH; and Y is a positive integer.
  • the channel resource indication information of the enhanced physical downlink control channel ePDCCH is carried on the physical downlink control channel PDCCH or is carried by the high layer signaling; the high layer signaling includes a MAC (Medium Access Control) CE (Control Element, Control unit) Signaling or RRC (Radio Resource Control) signaling, or other signaling.
  • MAC Medium Access Control
  • CE Control Element, Control unit
  • RRC Radio Resource Control
  • steps S21 to S22 may be performed by the base station, and the channel resource indication information is sent by the base station to the user equipment.
  • the above steps S21 to S22 can also be performed by a device having a base station function.
  • the resource used by the ePDCCH may be determined according to the channel resource indication information.
  • the resource indication field can indicate a resource location used by the ePDCCH to multiplex the physical downlink shared channel PDSCH.
  • the location of the resource used by the ePDCCH includes the location of the resource block group RBG used by the ePDCCH, the location of the resource block RB, or the location of the CCE.
  • the embodiment of the present invention may not limit the accuracy of the indication of the ePDCCH resource, and the resource indication field may only indicate the RBG range, the RB range, or the CCE range to which the ePDCCH resource is located, and allow the user equipment to be in the range of the blind detection capability of the user equipment.
  • the RBG range, the RB range, or the CCE range indicated by the resource indication field is blindly detected to determine the specific location of the CCE used by the ePDCCH.
  • the resources used by the ePDCCH are located in the downlink k RBGs.
  • k is a positive integer
  • ⁇ ⁇ ⁇ is the number of RBGs that can be used to carry the ePDCCH in the downlink, and is a downlink RB that can be used to carry the ePDCCH.
  • the number, w ra is the number of CCEs contained in one RB, and the mathematical symbol ".” represents the smallest integer greater than or equal to a.
  • the probability of selecting 4 CCEs in the RB is C ⁇ x4 in total, and only the log 2 (C ⁇ x4 ) 1 bits is needed to indicate the location range of the CCE occupied by the ePDCCH.
  • the resource indication field is 00, it indicates the ePDCCH used.
  • CCE is the first CCE of the RB; when the resource indication field is 01, it indicates the ePDCCH used.
  • the CCE is the second CCE of the RB.
  • the CCE used by the ePDCCH is the third CCE of the RB.
  • the resource indication field is 11
  • the ePDCCH is used.
  • CCE is the fourth CCE of RB.
  • the location range of the RBG used by the ePDCCH can be indicated.
  • the location range of the RB used by the ePDCCH can be indicated.
  • the location range of the CCE used by the ePDCCH can be indicated.
  • the possible convergence level AL of the ePDCCH is used (AL indicates the number of CCEs used by the ePDCCH, for example, the AL may be 1, 2, 4 or 8) Perform blind detection in the location range of the RBG indicated by the resource indication field, the location range of the RB, or the location range of the CCE, and determine the specific location of the CCE used by the ePDCCH.
  • the resource indication field included in the channel resource indication information indicates only the location range of the RBG where the ePDCCH resource is located, the location range of the RB, or the location range of the CCE, and the blind detection capability range of the user equipment.
  • the user equipment is allowed to perform blind detection in the location range of the RBG, the location range of the RB, or the location range of the CCE indicated by the resource indication field, which can reduce the bits occupied by the resource indication domain, thereby reducing the control for indicating the ePDCCH.
  • the overhead of signaling is allowed to perform blind detection in the location range of the RBG, the location range of the RB, or the location range of the CCE indicated by the resource indication field, which can reduce the bits occupied by the resource indication domain, thereby reducing the control for indicating the ePDCCH.
  • the channel resource indication information of the ePDCCH further includes an X-bit aggregation level indication field; the convergence level indication field is used to indicate the number of control channel units CCE used by the ePDCCH; and X is a positive integer.
  • the aggregation level AL represents the number of CCEs used by the ePDCCH
  • the mathematical symbol W represents the smallest integer greater than or equal to a.
  • the aggregation level indication field is 00
  • the AL indicating the ePDCCH is 1
  • the aggregation level indication field is 01
  • the AL indicating the ePDCCH is 2
  • the aggregation level indication field is 10
  • the AL of the ePDCCH is 4
  • the aggregation level indication field is 11
  • the AL of the ePDCCH is 8.
  • the present invention only indicates that the AL can be 1, 2, 4 or 8 as an example.
  • the configuration method of the domain is explained.
  • the AL may also be other values.
  • the embodiment of the present invention uses the convergence level indication field to indicate the number of CCEs used by the ePDCCH, so that the user equipment does not need to determine the number of CCEs used by the ePDCCH by using blind detection, and the power consumption of the user equipment can be saved. For example, when the user equipment passes the resource indication field of the above formula (1), (2) or (3), the location range of the RBG where the ePDCCH resource is located, the location range of the RB, or the location range of the CCE is determined, and the domain is indicated by the convergence level.
  • the user equipment can directly detect the location range of the RBG, the location range of the RB, or the location range of the CCE by using the determined AL value to obtain the The specific location of the CCE used by the ePDCCH can reduce the number of times the user equipment performs blind detection, thereby saving power consumption of the user equipment.
  • the embodiment of the present invention may further indicate the specific location of the CCE used by the ePDCCH in the channel resource indication information. After the user equipment obtains the channel resource indication information, the CCE used by the ePDCCH may be determined. The specific location of the resources, thus saving power consumption of the user equipment.
  • the resource used by the ePDCCH is located in at least one RB of the downlink, ⁇ : log 2 (C ) ( 4 ) or located in one RB of the downlink; ⁇ log 2 « ) ( 5 Or in two RBs in the downlink, and are used by the ePDCCH in the two RBs
  • CCE is in the same location, (6) where AL is the number of CCEs used by the ePDCCH, is the number of RBs that can be used to carry the ePDCCH in the downlink, and w ra is the number of CCEs included in one RB, and the mathematical symbol W Represents the smallest integer greater than or equal to a.
  • the channel resource indication information of the ePDCCH further includes an X-bit aggregation level indication field; the convergence level indication field is used to indicate the number of CCEs used by the ePDCCH; and X is a positive integer.
  • the method of the above formula (4) is applied, and one or two CCEs of all possible CCEs are used to carry the ePDCCH, and the two CCEs may be continuous or discontinuous, if two CCEs
  • the frequency domain diversity gain can be obtained without discontinuity. This is because there are differences in the frequency domain between the two CCEs, the channel fading of different frequencies is different, and the probability that different frequencies experience deep fading at the same time is reduced, thereby obtaining a certain diversity gain.
  • the method of the above formula (4) or (5) is applied to limit the CCE of the ePDCCH to be selected from one or two RBs, so that the CCE positions of the ePDCCH can be concentrated.
  • the resource indication method provided in this embodiment where the channel resource indication information includes an aggregation level indication field and a resource indication field, and the number of bits Y occupied by the resource indication field is the above formula (4), (5) or (6),
  • the specific location of the CCE used by the ePDCCH can be accurately indicated.
  • the user equipment performs a table lookup or a derivation operation according to the value of the resource indication field, and can obtain a specific location of the CCE used by the ePDCCH, and does not need to perform blind detection, thereby saving power consumption of the user equipment. Referring to FIG.
  • this embodiment provides another channel resource indication method, including the following steps: S31: Receive channel resource indication information of an enhanced physical downlink control channel (ePDCCH) sent by a base station, where the channel resource indication information includes Y bits. a resource indication field; the resource indication field is used to indicate a location of a resource used by the ePDCCH; Y is a positive integer. S32. Determine, according to the channel resource indication information, a resource used by the ePDCCH.
  • ePDCCH enhanced physical downlink control channel
  • steps S31 to S32 may be performed by the user equipment, and the channel resource indication information is sent by the base station to the user equipment.
  • steps S31 to S32 can also be performed by a device having a user device function.
  • the resource indication field can indicate that the ePDCCH is multiplexed in a physical downlink shared channel.
  • the location of the resource used by the ePDCCH includes the location of the resource block group RBG used by the ePDCCH, the location of the resource block RB, or the control channel unit.
  • the resources used by the ePDCCH are located in the downlink k RBGs; ⁇ log 2 (Ck )
  • ⁇ ⁇ is the number of RBGs that can be used to carry the ePDCCH in the downlink
  • RBs that can be used to carry the ePDCCH in the downlink
  • w ra is the number of CCEs included in one RB
  • the determining, according to the channel resource indication information, the resource used by the ePDCCH includes:
  • the resource configuration table includes binding information of each of different values of the resource indication domain and the resource location corresponding to each value.
  • the resource configuration table may be pre-configured according to actual needs.
  • the algorithm used may be a Best M (Best M Value) algorithm or a Top N (Best N Value) algorithm.
  • the channel resource indication information includes an aggregation level indication field and a resource indication field, where the user equipment determines, by using the resource indication field, a location range of the RBG where the ePDCCH resource is located, a location range of the RB, or a CCE.
  • the user equipment may directly detect the location range of the RBG, the location range of the RB, or the location range of the CCE by using the determined AL value to obtain The specific location of the CCE used by the ePDCCH can reduce the number of times the user equipment performs blind detection, thereby saving power consumption of the user equipment.
  • the resources used by the ePDCCH are located in the downlink k
  • ⁇ ⁇ is the number of RBGs that can be used to carry the ePDCCH in the downlink
  • RBs that can be used to carry the ePDCCH in the downlink
  • w ra is the number of CCEs included in one RB
  • the channel resource indication information of the ePDCCH further includes an X-level convergence level indication.
  • the aggregation level indication field is used to indicate the number of CCEs used by the ePDCCH; X is a positive integer;
  • the determining, according to the channel resource indication information, the resource used by the ePDCCH includes:
  • the resource configuration table includes binding information of each of the different values of the resource indication domain and the resource location corresponding to each of the values;
  • Detecting according to the number of CCEs used by the ePDCCH, the location range of the RBG, the location range of the RB, or the location range of the CCE, and determining the location of the CCE used by the ePDCCH.
  • the embodiment of the present invention uses the convergence level indication field to indicate the number of CCEs used by the ePDCCH, so that the user equipment does not need to determine the number of CCEs used by the ePDCCH by using blind detection, and the power consumption of the user equipment can be saved. For example, when the user equipment passes the resource indication field of the above formula (1), (2) or (3), the location range of the RBG where the ePDCCH resource is located, the location range of the RB, or the location range of the CCE is determined, and the domain is indicated by the convergence level.
  • the user equipment can directly detect the location range of the RBG, the location range of the RB, or the location range of the CCE by using the determined AL value to obtain the The specific location of the CCE used by the ePDCCH can reduce the number of times the user equipment performs blind detection, thereby saving power consumption of the user equipment.
  • the resource used by the ePDCCH is located in at least one RB in the downlink, where:
  • AL is the number of CCEs used by the ePDCCH
  • w ra is the number of CCEs included in one RB
  • W represents the smallest integer greater than or equal to a.
  • the channel resource indication information of the ePDCCH further includes an X-bit aggregation level indication field; the convergence level indication field is used to indicate the number of CCEs used by the ePDCCH; X is a positive integer;
  • the determining, according to the channel resource indication information, the resource used by the ePDCCH includes:
  • the resource configuration table includes each of different values of the resource indication domain. Binding information of the value and the resource location corresponding to each of the values.
  • the channel resource indication information includes an aggregation level indication field and a resource indication field
  • the user equipment performs a table lookup or a derivation operation according to the value of the convergence level indication field and the resource indication field, and can obtain an ePDCCH.
  • the specific location of the CCE used, no need to blind Detection can save power consumption of user equipment.
  • the embodiment of the present invention further provides a base station, which can implement the channel resource indication method in the foregoing embodiment of FIG. 2.
  • this embodiment provides a base station, including an indication obtaining unit 41 and an indication sending unit 42, as follows:
  • the indication obtaining unit 41 is configured to acquire channel resource indication information of the enhanced physical downlink control channel ePDCCH.
  • the indication sending unit 42 is configured to send the channel resource indication information to the user equipment.
  • the channel resource indication information includes a Y-bit resource indication field; the resource indication field is used to indicate a location of a resource used by the ePDCCH; and Y is a positive integer.
  • the channel resource indication information of the ePDCCH further includes an X-bit aggregation level indication field; the convergence level indication field is used to indicate the number of control channel units CCE used by the ePDCCH; and X is a positive integer.
  • the resource indication field can indicate a resource location used by the ePDCCH to multiplex the physical downlink shared channel PDSCH.
  • the location of the resource used by the ePDCCH includes the location of the resource block group RBG used by the ePDCCH, the location of the resource block RB, or the location of the CCE.
  • the channel resource indication information of the enhanced physical downlink control channel ePDCCH is carried on the physical downlink control channel PDCCH, or is carried by the high layer signaling; the high layer signaling includes a MAC CE signaling or RRC signaling.
  • ⁇ ⁇ is the number of RBGs that can be used to carry the ePDCCH in the downlink
  • RBs that can be used to carry the ePDCCH in the downlink
  • w ra is the number of CCEs included in one RB
  • the resource used by the ePDCCH is located in at least one RB in the downlink, ⁇ : log 2 (C)
  • the embodiment of the present invention further provides a user equipment, which can implement the channel resource indication method in the foregoing embodiment of FIG.
  • this embodiment provides a user equipment, including an indication receiving unit 51 and a resource determining unit 52, which are specifically as follows:
  • the indication receiving unit 51 is configured to receive the channel resource indication information of the enhanced physical downlink control channel (ePDCCH) sent by the base station, where the channel resource indication information includes a Y-bit resource indication field, and the resource indication field is used to indicate the ePDCCH.
  • the location of the resource used; Y is a positive integer.
  • the resource determining unit 52 is configured to determine, according to the channel resource indication information, a resource used by the ePDCCH.
  • the resource indication field can indicate a resource location used by the ePDCCH to multiplex the physical downlink shared channel PDSCH.
  • the location of the resource used by the ePDCCH includes the location of the resource block group RBG used by the ePDCCH, the location of the resource block RB, or the location of the CCE.
  • the resources used by the ePDCCH are located in the downlink k RBGs; ⁇ log 2 (Ck )
  • k is a positive integer
  • B is the number of RBGs that can be used to carry the ePDCCH in the downlink
  • RB is the number of RBs that can be used to carry the ePDCCH in the downlink
  • w ra is the number of CCEs included in one RB
  • this embodiment provides a resource determining unit, including a first range determining subunit 61 and a first detecting subunit 62, as follows:
  • the first range determining sub-unit 61 queries the resource configuration table according to the value of the resource indication field, or performs a derivation operation according to the value of the resource indication field, and obtains a location range of the resource block group RBG used by the ePDCCH, and an RB. a location range or a location range of the CCE; the resource configuration table includes binding information of each of the different values of the resource indication domain and the resource location corresponding to each of the values.
  • the first detecting sub-unit 62 is configured to perform blind detection in the range of the location of the RBG, the location range of the RB, or the location range of the CCE according to the number of possible CCEs used by the ePDCCH, and determine the ePDCCH usage.
  • the location of the CCE In another optional implementation manner, the resources used by the ePDCCH are located in the downlink k
  • k is a positive integer
  • B is the number of RBGs that can be used to carry the ePDCCH in the downlink
  • RB is the number of RBs that can be used to carry the ePDCCH in the downlink
  • w ra is the number of CCEs included in one RB
  • the channel resource indication information of the ePDCCH further includes an X-bit aggregation level indication field; the convergence level indication field is used to indicate the number of CCEs used by the ePDCCH; and X is a positive integer.
  • this embodiment provides another resource determining unit, including a convergence level determining subunit 71, a second range determining subunit 72, and a second detecting subunit 73, as follows:
  • the aggregation level determining sub-unit 71 is configured to determine, according to the value of the aggregation level indication field, the number of CCEs used by the ePDCCH.
  • the second range determining sub-unit 72 is configured to query the resource configuration table according to the value of the resource indication field, or perform a derivation operation according to the value of the resource indication field, to obtain a location range of the RBG used by the ePDCCH, and a location of the RB. a range of locations of the CCEs; the resource configuration table includes binding information of each of the different values of the resource indication domain and the resource location corresponding to each of the values.
  • the second detecting sub-unit 73 is configured to detect, according to the number of CCEs used by the ePDCCH, the location range of the RBG, the location range of the RB, or the location range of the CCE, and determine the location of the CCE used by the ePDCCH.
  • the resource used by the ePDCCH is located in at least one RB in the downlink, where:
  • AL is the number of CCEs used by the ePDCCH
  • w ra is the number of CCEs included in one RB
  • W represents the smallest integer greater than or equal to a.
  • the channel resource indication information of the ePDCCH further includes an X-bit aggregation level indication field; the convergence level indication field is used to indicate the number of CCEs used by the ePDCCH; and X is a positive integer.
  • this embodiment provides another resource determining unit, which includes an aggregation level determining subunit 81, a resource indication determining subunit 82, and a resource obtaining subunit 83, as follows:
  • the aggregation level determining sub-unit 81 is configured to determine, according to the value of the convergence level indication field, the number of CCEs used by the ePDCCH, and obtain the value of the AL.
  • the resource indication determining sub-unit 82 is configured to calculate a value of the resource indication field according to the value of the AL.
  • a resource obtaining sub-unit 83 configured to query a resource configuration table according to the value of the resource indication field, or perform a derivation operation according to the value of the resource indication field, to obtain a location of a CCE used by the ePDCCH;
  • the resource configuration table includes The resource indicates binding information of each of the different values of the domain and the resource location corresponding to each of the values.
  • the channel resource indication method, the base station, and the user equipment provided by the embodiment of the present invention use the channel resource indication information to indicate the location of the resource used by the ePDCCH, and can reduce the overhead of the control signaling for indicating the ePDCCH, and reduce the user equipment to blind the ePDCCH. The number of detections saves the power consumption of the user equipment.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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

Abstract

La présente invention porte sur un procédé pour indiquer des ressources de canal. Le procédé comprend : l'obtention des informations d'indication de ressources de canal du canal de commande de liaison descendante physique amélioré (ePDCCH); et l'émission des informations d'indication de ressources de canal à l'équipement utilisateur; les informations d'indication de ressources de canal comprenant le domaine d'indication de ressource à Y bits; le domaine d'indication de ressource indiquant la localisation des ressources utilisées par l'ePDCCH; et Y étant un nombre entier positif. La présente invention porte également sur une station de base et un équipement utilisateur. Des modes de réalisation de la présente invention peuvent réduire la surcharge de la signalisation de commande utilisée pour indiquer un ePDCCH, et économiser l'énergie de l'équipement utilisateur.
PCT/CN2013/075103 2012-06-29 2013-05-03 Procédé et dispositif pour indiquer des ressources de canal WO2014000507A1 (fr)

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