WO2014071611A1 - Procédé et dispositif de transmission pour canal de commande de liaison descendante - Google Patents

Procédé et dispositif de transmission pour canal de commande de liaison descendante Download PDF

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Publication number
WO2014071611A1
WO2014071611A1 PCT/CN2012/084389 CN2012084389W WO2014071611A1 WO 2014071611 A1 WO2014071611 A1 WO 2014071611A1 CN 2012084389 W CN2012084389 W CN 2012084389W WO 2014071611 A1 WO2014071611 A1 WO 2014071611A1
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WO
WIPO (PCT)
Prior art keywords
downlink control
control channel
physical downlink
carrier
resource block
Prior art date
Application number
PCT/CN2012/084389
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English (en)
Chinese (zh)
Inventor
周永行
成艳
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201280076659.4A priority Critical patent/CN104756413B/zh
Priority to PCT/CN2012/084389 priority patent/WO2014071611A1/fr
Publication of WO2014071611A1 publication Critical patent/WO2014071611A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas

Definitions

  • Embodiments of the present invention relate to the field of communications technologies, and, more particularly, to a method and apparatus for transmitting a downlink control channel. Background technique
  • CA carrier aggregation
  • SCS Same-CC Scheduling
  • Cross-CC Scheduling Another scheme is called Cross-CC Scheduling (CCS), that is, the control channel on a certain carrier can schedule data of the carrier or other carriers.
  • CCS Cross-CC Scheduling
  • a carrier indicator field CIF
  • a 3-bit CIF is used. Due to carrier aggregation, the channel conditions and load of different carriers may be inconsistent.
  • Cross-carrier scheduling can improve the transmission performance of the control channel on the one hand, and dynamically balance the load of each carrier on the other hand.
  • the support for the enhanced physical downlink control channel (EPDCCH) cross-carrier scheduling capability supports the PDCCH cross-carrier scheduling mechanism from the perspective of backward compatibility, that is, adding a 3-bit CIF domain indication scheduling in the DCI corresponding to the EPDCCH. Which carrier is transmitting data.
  • the solution has the following problems: Adding a 3-bit CIF field to the DCI increases the DCI payload, thereby reducing the performance of the EPDCCH under limited resources.
  • the embodiments of the present invention provide a method and an apparatus for transmitting a downlink control channel, which can improve the performance of the EPDCCH under limited resources.
  • a method for transmitting a downlink control channel includes: receiving information indicating a physical resource block set carrying an enhanced physical downlink control channel, and according to the physical downlink control used to indicate bearer enhancement The information of the physical resource block set of the channel receives the enhanced physical downlink control channel;
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel includes information indicating a carrier corresponding to the physical resource block set carrying the enhanced physical downlink control channel;
  • Determining the received carrier corresponding to the enhanced physical downlink control channel according to the information of the physical resource block set for indicating the enhanced physical downlink control channel including:
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel is carried on the enhanced physical downlink control channel.
  • EPDCCH configuration information or carrier indication field CIF configuration information.
  • the physical resource block set is a physics of at least two enhanced physical downlink control channels included on a carrier where the physical resource block set of the enhanced physical downlink control channel is located
  • One of the resource block sets, the at least two physical resource block sets correspond to at least two different enhanced physical downlink control channels, and the at least two different enhanced physical downlink control channel scheduling carriers are different.
  • a method for transmitting a downlink control channel includes: transmitting, to a user equipment, information indicating a physical resource block set carrying an enhanced physical downlink control channel;
  • the enhanced physical downlink control channel Sending, by the physical resource included in the physical resource block set, the enhanced physical downlink control channel to the user equipment, so that the user equipment determines to receive according to the physical resource block set of the physical downlink control channel that is enhanced by the bearer. And the carrier corresponding to the enhanced physical downlink control channel;
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel includes information indicating a carrier corresponding to the physical resource block set carrying the enhanced physical downlink control channel.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel is included in the enhanced physical downlink control channel.
  • the carrier indicates the domain CIF configuration information.
  • the physical resource block set is at least two bearer enhanced physical downlink control channels included on a carrier where the physical resource block set of the enhanced physical downlink control channel is located
  • the at least two physical resource block sets correspond to at least two different enhanced physical downlink control channels
  • the at least two different enhanced physical downlink control channel scheduling carriers are different.
  • the determining the location according to the carrier Determining, by the carrier, the enhancement of the corresponding carrier of the carrier, according to the carrier, and the corresponding relationship between the physical resource set and the carrier, A collection of physical resource blocks of a physical downlink control channel.
  • the determining, by the user equipment, the scheduled carrier, and determining, according to the carrier, the physical resource block set that carries the enhanced physical downlink control channel corresponding to the carrier further includes: determining that the user equipment is not configured with a carrier indication domain CIF.
  • an apparatus for transmitting a downlink control channel includes: a transceiver module, configured to receive information indicating a physical resource block set carrying an enhanced physical downlink control channel, and according to the use Receiving an enhanced physical downlink control channel for information indicating a set of physical resource blocks carrying the enhanced physical downlink control channel;
  • a determining module configured to determine, according to the information indicating a physical resource block set that carries the enhanced physical downlink control channel, a carrier corresponding to the enhanced physical downlink control channel, where the transceiver module is further configured to The received EPDCCH receives a physical downlink shared channel on the determined carrier or transmits a physical uplink shared channel on the determined carrier according to the received EPDCCH.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel carries the information of the carrier corresponding to the physical resource block set of the enhanced physical downlink control channel;
  • the determining module is specifically configured to determine, according to the information about the carrier corresponding to the physical resource block set indicating the enhanced physical downlink control channel, the received carrier corresponding to the enhanced physical downlink control channel.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel includes the configuration information of the enhanced physical downlink control channel EPDCCH, or the carrier indication domain CIF configuration. Information.
  • the physical resource block set is at least two bearer enhanced physical downlink control channels included on a carrier where the physical resource block set of the enhanced physical downlink control channel is located
  • the at least two physical resource block sets correspond to at least two different enhanced physical downlink control channels
  • the at least two different enhanced physical downlink control channel scheduling carriers are different.
  • an apparatus for transmitting a downlink control channel includes: a transceiver module, configured to send, to a user equipment, information indicating a physical resource block set carrying an enhanced physical downlink control channel;
  • a determining module configured to determine a carrier that the user equipment needs to be scheduled, and determine, according to the carrier, a physical resource block set that carries the enhanced physical downlink control channel corresponding to the carrier;
  • the transceiver module is further configured to send the enhanced physical downlink control channel by using the physical resource included in the physical resource block set, so that the user equipment is configured according to the physical resource block of the enhanced physical downlink control channel of the bearer.
  • the set determines the carrier corresponding to the received enhanced physical downlink control channel;
  • the transceiver module is further configured to send, by using a carrier corresponding to the enhanced physical downlink control channel, a physical downlink shared channel corresponding to the enhanced physical downlink control channel to the user equipment, or a transceiver module, where And receiving, by the carrier corresponding to the enhanced physical downlink control channel, a physical uplink shared channel corresponding to the enhanced physical downlink control channel sent by the user equipment.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel includes information indicating a carrier corresponding to the physical resource block set carrying the enhanced physical downlink control channel.
  • the information indicating a physical resource block set carrying the enhanced physical downlink control channel is included in the enhanced physical downlink control channel.
  • the carrier indicates the domain CIF configuration information.
  • the physical resource block set is at least two bearer enhanced physical downlink control channels included on a carrier where the physical resource block set of the enhanced physical downlink control channel is located
  • the at least two physical resource block sets correspond to at least two different enhanced physical downlink control channels
  • the at least two different enhanced physical downlink control channel scheduling carriers are different.
  • the determining module is specifically configured to determine, according to the carrier, a correspondence between the physical resource set and the carrier, A set of physical resource blocks of the enhanced physical downlink control channel.
  • the determining module is specifically configured to determine that the user equipment is not configured with a carrier indication field CIF.
  • an apparatus for transmitting a downlink control channel includes: a receiver, configured to receive information indicating a physical resource block set carrying an enhanced physical downlink control channel, and according to the use Physical resources indicating the physical downlink control channel carrying the enhanced The information of the block set receives the enhanced physical downlink control channel;
  • a processor configured to determine, according to the information indicating a physical resource block set that carries the enhanced physical downlink control channel, a received carrier corresponding to the enhanced physical downlink control channel; Receiving the received EPDCCH to receive a physical downlink shared channel on the determined carrier, or
  • a transmitter configured to send, according to the received EPDCCH, a physical uplink shared channel on the determined carrier.
  • an apparatus for transmitting a downlink control channel includes: a transmitter, configured to send, to a user equipment, information indicating a physical resource block set carrying an enhanced physical downlink control channel;
  • the processor determines a carrier that the user equipment needs to schedule, and determines, according to the carrier, a physical resource block set that carries the enhanced physical downlink control channel corresponding to the carrier;
  • the transmitter is further configured to send, by using the physical resource included in the physical resource block set, the enhanced physical downlink control channel to the user equipment, so that the user equipment is enhanced according to the physical downlink control of the bearer.
  • the set of physical resource blocks of the channel determines the carrier corresponding to the received enhanced physical downlink control channel;
  • the transmitter is further configured to send, by using a carrier corresponding to the enhanced physical downlink control channel, a physical downlink shared channel corresponding to the enhanced physical downlink control channel to the user equipment, or a receiver, used in the
  • the physical uplink shared channel corresponding to the enhanced physical downlink control channel sent by the user equipment is received on a carrier corresponding to the enhanced physical downlink control channel.
  • 1 is a schematic diagram of a transmission method of a downlink control channel according to an embodiment of the present invention.
  • FIG. 2 is a schematic flow diagram of a method for transmitting a downlink control channel according to another embodiment of the present invention.
  • FIG. 3 is a schematic structural view of a device according to another embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a device according to another embodiment of the present invention.
  • Figure 5 is a schematic structural view of a device according to another embodiment of the present invention.
  • FIG. 6 is a block diagram showing the structure of a device in accordance with another embodiment of the present invention. detailed description
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • UMTS Universal Mobile Telecommunication System
  • a User Equipment which may also be called a Mobile Terminal, a mobile user equipment, etc.
  • a radio access network eg, RAN, Radio Access Network
  • the network communicates, and the user equipment can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a mobile device that can be portable, pocket, handheld, computer built, or in-vehicle. They exchange language and/or data with the radio access network.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or a base station (NodeB) in WCDMA, or may be an evolved base in LTE.
  • BTS Base Transceiver Station
  • NodeB base station
  • the present invention is not limited to the eNB or e-NodeB (evolutional Node B), but for convenience of description, the following embodiments are described by taking an eNB as an example.
  • a base station (eNB) and a user equipment (UE) perform communication and data transmission on one carrier.
  • the minimum time unit for eNB scheduling is one subframe, the length is one millisecond, and is scheduled.
  • the UE generally includes its own physical downlink control channel (PDCCH) in each subframe, and carries time-frequency resource allocation information indicating a physical data channel (which may be uplink or downlink), and the UE follows the PDCCH in the search space of the PDCCH.
  • PDCCH physical downlink control channel
  • the PDCCH is descrambled by its own RNTI to verify and determine its own PDCCH, and its data channel is further processed accordingly.
  • the so-called search space is a piece of resources defined according to the Control Channel Element (CCE).
  • CA Carrier Aggregation
  • SCS Same-CC Scheduling
  • Cross-CC Scheduling that is, the control channel on a certain carrier can schedule data of the carrier or other carrier.
  • CCS Carrier-CC Scheduling
  • a carrier indicator field (CIF) is added to the DCI corresponding to the PDCCH to specifically indicate which carrier is scheduled for data transmission on the current PDCCH.
  • CIF carrier indicator field
  • a 3-bit CIF is used.
  • the multi-user common PDCCH can be coexisted with the LTE UE without CIF. Due to carrier aggregation, the channel conditions and load of different carriers may be inconsistent.
  • Cross-carrier scheduling can improve the transmission performance of the control channel on the one hand, and dynamically balance the load of each carrier on the other hand.
  • An enhanced control channel is introduced in the LTE communication system.
  • the network side configures K physical resource block sets for each user, where K is a positive integer greater than or equal to 1.
  • K is a positive integer greater than or equal to 1.
  • Each resource block set set includes at least one physical resource block PRB pair (for example, it may be 2 PRB pairs or 4 PRB pair or 8 PRB pairs), K physical resource block sets serve as the search space for the user's enhanced control channel.
  • each system contains 4 PRBs.
  • setl contains PRB pair as PRB pairl, 4, 7, 10; set2 contains PRB pair 2, 5, 8, 11; set3 Contains PRB pair 3, 6, 9, 12.
  • each system can be configured with a maximum of 2 physical resource block sets.
  • a step 101 of the embodiment of the present invention is described in detail below with reference to FIG. 1, the user equipment receives information indicating a physical resource block set carrying an enhanced physical downlink control channel, and according to the physical downlink control used to indicate bearer enhancement.
  • the information of the physical resource block set of the channel receives the enhanced physical downlink control channel;
  • the user equipment may determine, according to the information of the physical resource block set that carries the enhanced physical downlink control channel, the number of physical resource block sets transmitted on the downlink carrier, and/or the PRB pair included in the at least one physical resource block set.
  • the information indicating the physical physical control block set of the enhanced physical downlink control channel may also include information indicating a carrier corresponding to the enhanced physical downlink control channel physical resource block set.
  • the carrier corresponding to the set of physical resource blocks that is, the carrier corresponding to the enhanced physical downlink control channel received in the set of physical resource blocks. If the corresponding carrier is a downlink carrier, the EPDCCH schedules a PDSCH on the downlink carrier; if the corresponding carrier is an uplink carrier, the EPDCCH schedules PUSCH transmission on the uplink carrier.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel may correspond to one configuration carrier, that is, the information of the physical resource block set carrying the enhanced physical downlink control channel on one carrier, when the user equipment When at least two carriers are configured, the user equipment needs to receive at least two pieces of physical resource block sets indicating the enhanced physical downlink control channel, and each piece of information corresponds to one configured carrier.
  • One of the steps indicates that the information of the physical resource block set carrying the enhanced physical downlink control channel may also correspond to all configured carriers. In this case, the different parts of the information indicate the bearer enhanced physical downlink control channel on different configured carriers.
  • the user equipment determines, according to the information indicating the physical resource block set carrying the enhanced physical downlink control channel, the bearer enhancement on each configured carrier. The information of the physical resource block set of the physical downlink control channel.
  • At least two physical resource block sets correspond to different carriers; or, when the user equipment is not present
  • the CIF when it is determined that there are at least two physical resource block sets on one carrier according to the information indicating the physical resource block set of the physical downlink control channel, the carrier corresponding to at least two physical resource block sets is different.
  • the user equipment may determine the location of the PRB pair included in the physical resource block set according to the information indicating the physical downlink control channel physical resource block set, so as to detect the EPDCCH in the corresponding PRB pair position.
  • Step 102 The user equipment determines the received carrier wave corresponding to the enhanced physical downlink control channel.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel in step 101 includes the information indicating the carrier corresponding to the enhanced physical downlink control channel physical resource block set
  • the physical downlink control of the user equipment according to the indication is enhanced in this step.
  • the information of the carrier corresponding to the set of channel physical resource blocks determines the carrier corresponding to the received enhanced physical downlink control channel.
  • the user equipment determines, according to the information about the physical resource block set that indicates the enhanced physical downlink control channel, the physical resource block set of the enhanced physical downlink control channel on each configured carrier, and the enhanced physical according to the indication.
  • the information of the carrier corresponding to the set of physical resource blocks of the downlink control channel determines the carrier corresponding to each physical resource block set on each configured carrier, so as to determine the received carrier corresponding to the enhanced physical downlink control channel.
  • the user equipment can also be performed as follows:
  • Manner 1 The user equipment determines, according to the information indicating the carrier corresponding to the enhanced physical downlink control channel physical resource block set, the carrier corresponding to the received enhanced physical downlink control channel;
  • Manner 2 When the user equipment is not configured with the CIF, the user equipment determines, according to the information of the carrier corresponding to the enhanced physical downlink control channel physical resource block set, the carrier corresponding to the received enhanced physical downlink control channel; or when the user equipment does not have When the CIF is configured, the user equipment determines, according to the information indicating the physical resource block set carrying the enhanced physical downlink control channel, the carrier corresponding to the received enhanced physical downlink control channel;
  • the physical downlink control channel is indicated according to the indication.
  • the information corresponding to the carrier of the physical resource block set determines the carrier corresponding to the received enhanced physical downlink control channel, or determines the received enhanced physical downlink control channel according to the information of the physical resource block set indicating the enhanced physical downlink control channel of the bearer. Carrier. If the user equipment is configured with CIF, wave.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel in step 101 does not include the information indicating the carrier corresponding to the enhanced physical downlink control channel physical resource block set, the information may be as follows:
  • Manner 1 The user equipment determines, according to a predetermined correspondence between the set of physical resource blocks and the carrier, the carrier corresponding to the received enhanced physical downlink control channel, where the correspondence between the predetermined physical resource block set and the carrier may be the first physical resource block.
  • the set corresponds to the first carrier, and the second set of physical resource blocks corresponds to the second carrier;
  • the first carrier may be the one with a smaller carrier index
  • the second carrier may be the one with a larger carrier index
  • Manner 2 The user equipment receives information indicating a carrier corresponding to the enhanced physical downlink control channel physical resource block set, and determines, according to the information indicating the carrier corresponding to the enhanced physical downlink control channel physical resource block set, The carrier corresponding to the enhanced physical downlink control channel.
  • the information indicating the carrier corresponding to the enhanced physical downlink control channel physical resource block set may not be included in the information indicating the enhanced physical downlink control channel physical resource block set.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel in step 101 does not include information indicating the carrier corresponding to the enhanced physical downlink control channel physical resource block set
  • the user equipment determines, according to the mode 1 or the mode 2, the carrier corresponding to the received enhanced physical downlink control channel. If the user equipment is configured with the CIF, the user equipment determines the carrier corresponding to the physical downlink control channel according to the CIF field in the DCI corresponding to the EPDCCH.
  • Step 103 The user equipment receives a physical downlink shared channel on the determined carrier according to the received EPDCCH, or sends a physical uplink shared channel on the determined carrier according to the received EPDCCH.
  • the user equipment receives the physical on the determined carrier according to the received EPDCCH.
  • the downlink shared channel or the physical uplink shared channel are examples of the downlink shared channel.
  • the carrier corresponding to the enhanced physical downlink control channel may be a carrier of the enhanced physical downlink control channel scheduling.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel includes information indicating a carrier corresponding to the physical resource block set carrying the enhanced physical downlink control channel;
  • Determining the received carrier corresponding to the enhanced physical downlink control channel according to the information of the physical resource block set for indicating the enhanced physical downlink control channel including:
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel is included in the configuration information of the enhanced physical downlink control channel EPDCCH, or the carrier indication field CIF configuration information.
  • the physical resource block set is one of a set of physical resource blocks of at least two enhanced physical downlink control channels that are included in a carrier of the physical resource block set of the enhanced physical downlink control channel, where The at least two physical resource block sets correspond to at least two different enhanced physical downlink control channels, and the at least two different enhanced physical downlink control channel scheduling carriers are different.
  • the foregoing at least two physical resource block sets corresponding to the at least two different enhanced physical downlink control channels may include at least two physical resource block sets and corresponding to at least two different enhanced physical downlink control channels.
  • the foregoing at least two physical resource block sets corresponding to the at least two different enhanced physical downlink control channels may include at least two physical resource block sets corresponding to the same enhanced physical downlink control channel, or at least two Different enhanced physical downlink control channels correspond to corresponding sets of physical resource blocks.
  • the determining, by the user equipment, the received carrier corresponding to the enhanced physical downlink control channel according to the information of the physical resource block set for indicating the enhanced physical downlink control channel includes:
  • the user equipment determines, according to the information about the physical resource block set indicating the enhanced physical downlink control channel, and the corresponding relationship between the physical resource block set and the carrier, the carrier corresponding to the enhanced physical downlink control channel.
  • the method further includes:
  • the user equipment determines that the carrier indication domain CIF is not configured.
  • the carrier corresponding to the enhanced physical downlink control channel may be a carrier scheduled by the enhanced physical downlink control channel.
  • the enhanced physical downlink control channel and the corresponding relationship between the carriers may be stored in the user equipment.
  • the cross-carrier scheduling under the EPDCCH is implemented by associating the enhanced physical downlink control channel physical resource block set with the carrier, and the EPDCCH can be improved by not adding the 3-bit CIF in the DCI, thereby increasing the DCI payload.
  • Transmission performance on the other hand, because the cross-carrier scheduling mechanism that supports the addition of a 3-bit CIF domain in the DCI is a UE capability, and only some user equipments can be supported in the system, the present invention enables all UEs to Support cross-carrier scheduling.
  • Embodiment 2 of the present invention will be described in detail below with reference to FIG.
  • Step 201 The base station sends, to the user equipment, information for indicating a physical resource block set carrying the enhanced physical downlink control channel.
  • the base station sends information to the user equipment for indicating a physical resource block set carrying the enhanced physical downlink control channel.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel may include information indicating a carrier corresponding to the enhanced physical downlink control channel physical resource block set.
  • the carriers corresponding to at least two physical resource block sets are different.
  • the information indicating the physical resource block set of the enhanced physical downlink control channel may be: when the CIF is not configured for the user equipment, the information indicating the physical resource block set indicating the enhanced physical downlink control channel includes the indication enhancement.
  • Step 202 The base station determines a carrier that the user equipment needs to be scheduled, and determines, according to the carrier, the physical resource block set that carries the enhanced physical downlink control channel corresponding to the carrier.
  • the base station determines the carrier that the user equipment needs to be scheduled, and may refer to the downlink carrier that the base station determines to carry the PDSCH scheduled by the user equipment, and may also refer to the uplink carrier that the base station determines to bear the PUSCH scheduled by the user equipment.
  • the base station may determine, according to the correspondence between the physical resource block set and the carrier, and the carrier to be scheduled, the physical resource block set of the enhanced physical downlink control channel corresponding to the carrier that needs to be scheduled;
  • the base station may determine, according to the correspondence between the physical resource block set and the carrier, and the carrier that needs to be scheduled, the enhanced physical medium corresponding to the carrier that needs to be scheduled. a set of physical resource blocks of the downlink control channel;
  • the physical resource block set carrying the enhanced physical downlink control channel in step 201 includes the information indicating the carrier corresponding to the enhanced physical downlink control channel physical resource block set
  • the physical resource block set corresponds to the carrier.
  • the relationship may be consistent with the correspondence between the physical resource block set and the carrier indicated by the information of the carrier corresponding to the physical downlink control channel physical resource block set indicating the enhanced.
  • the corresponding relationship between the physical resource block set and the carrier may be as follows: the first physical resource block set corresponds to the first carrier, and/or the second physical resource block set corresponds to the second carrier;
  • the first carrier may be the one with a smaller carrier index
  • the second carrier may be the one with a larger carrier index
  • the correspondence between the carrier and the set of physical resource blocks carrying the enhanced physical downlink control channel corresponding to the carrier may be stored in the base station.
  • Step 203 The base station sends the enhanced physical downlink control channel to the user equipment by using the physical resource included in the physical resource block set, so that the user equipment is configured according to the physical resource of the physical downlink control channel enhanced by the user equipment.
  • the set of blocks determines the carrier corresponding to the received enhanced physical downlink control channel;
  • Step 204 The base station sends, to the user equipment, a physical downlink shared channel corresponding to the enhanced physical downlink control channel, or a carrier corresponding to the enhanced physical downlink control channel, on a carrier corresponding to the enhanced physical downlink control channel. And receiving, by the user equipment, a physical uplink shared channel corresponding to the enhanced physical downlink control channel.
  • the carrier corresponding to the enhanced physical downlink control channel may be a carrier scheduled by the enhanced physical downlink control channel.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel includes information indicating a carrier corresponding to the physical resource block set carrying the enhanced physical downlink control channel.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel is included in the configuration information of the enhanced physical downlink control channel EPDCCH, or the carrier indication field CIF configuration information.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel includes information indicating a carrier corresponding to the physical resource block set carrying the enhanced physical downlink control channel;
  • the physical resource block set is one of at least two physical resource block sets of the enhanced physical downlink control channel included in the carrier of the physical resource block set of the enhanced physical downlink control channel, the at least two physical The resource block set corresponds to at least two different enhanced physical downlink control channels, and the at least two different enhanced physical downlink control channel scheduling carriers are different.
  • the cross-carrier scheduling under the EPDCCH is implemented by associating the enhanced physical downlink control channel physical resource block set with the carrier, and the EPDCCH can be improved by not adding the 3-bit CIF in the DCI, thereby increasing the DCI payload.
  • the transmission performance enables all UEs to support cross-carrier scheduling.
  • Embodiment 3 of the present invention will be described in detail below with reference to FIG.
  • An apparatus for transmitting a downlink control channel includes:
  • the transceiver module 301 is configured to receive information for indicating a physical resource block set carrying the enhanced physical downlink control channel, and receive the enhanced physical according to the information used to indicate the physical resource block set carrying the enhanced physical downlink control channel.
  • a determining module 302 configured to: according to the object used to indicate an enhanced physical downlink control channel The information of the resource block set determines the carrier corresponding to the received enhanced physical downlink control channel;
  • the transceiver module 301 is further configured to: receive, according to the received EPDCCH, a physical downlink shared channel on the determined carrier wave or send a physical uplink shared channel on the determined carrier according to the received EPDCCH.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel includes information indicating a carrier corresponding to the physical resource block set carrying the enhanced physical downlink control channel;
  • the determining module is specifically configured to determine, according to the information about the carrier corresponding to the physical resource block set indicating the enhanced physical downlink control channel, the received carrier corresponding to the enhanced physical downlink control channel.
  • the determining module is specifically configured to determine, according to the information about the physical resource block set indicating the enhanced physical downlink control channel, and the relationship between the physical resource block set and the carrier, the received enhanced The carrier corresponding to the physical downlink control channel.
  • the determining module is specifically configured to determine that the user equipment is not configured with a carrier indication domain CIF.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel is included in the configuration information of the enhanced physical downlink control channel EPDCCH, or the carrier indication field CIF configuration information.
  • the physical resource block set is one of at least two physical resource block sets of the enhanced physical downlink control channel included in the carrier of the physical resource block set of the enhanced physical downlink control channel, the at least two physical The resource block set corresponds to at least two different enhanced physical downlink control channels, and the at least two different enhanced physical downlink control channel scheduling carriers are different.
  • Embodiment 4 of the present invention will be described in detail below with reference to FIG.
  • An apparatus for transmitting a downlink control channel includes:
  • the transceiver module 401 is configured to send, to the user equipment, information for indicating a physical resource block set carrying the enhanced physical downlink control channel;
  • the determining module 402 is configured to determine a carrier that the user equipment needs to schedule, and determine, according to the carrier, a physical resource block set that carries the enhanced physical downlink control channel corresponding to the carrier;
  • the transceiver module 401 is further configured to send the enhanced physical downlink control channel by using the physical resource included in the physical resource block set, so that the user equipment is configured according to the physical resource of the enhanced physical downlink control channel of the bearer.
  • the set of blocks determines the carrier corresponding to the received enhanced physical downlink control channel;
  • the transceiver module 401 is further configured to send, by using a carrier corresponding to the enhanced physical downlink control channel, a physical downlink shared channel corresponding to the enhanced physical downlink control channel to the user equipment, or
  • the transceiver module 401 is configured to receive, on a carrier corresponding to the enhanced physical downlink control channel, a physical uplink shared channel corresponding to the enhanced physical downlink control channel sent by the user equipment.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel includes information indicating a carrier corresponding to the physical resource block set carrying the enhanced physical downlink control channel.
  • the information indicating the physical resource block set carrying the enhanced physical downlink control channel is included in the configuration information of the enhanced physical downlink control channel EPDCCH, or the carrier indication field CIF configuration information.
  • the physical resource block set is one of at least two physical resource block sets of the enhanced physical downlink control channel included in the carrier of the physical resource block set of the enhanced physical downlink control channel, the at least two physical The resource block set corresponds to at least two different enhanced physical downlink control channels, and the at least two different enhanced physical downlink control channel scheduling carriers are different.
  • the determining module 402 is specifically configured to determine, according to the carrier, a correspondence between the physical resource set and the carrier, the physical resource block set that carries the enhanced physical downlink control channel corresponding to the carrier.
  • the determining module is further configured to determine that the user equipment is not configured with a carrier indication domain CIF.
  • Embodiment 5 of the present invention will be described in detail below with reference to FIG.
  • An apparatus for transmitting a downlink control channel includes:
  • the receiver 501 is configured to receive information for indicating a physical resource block set carrying the enhanced physical downlink control channel, and receive the enhanced physical according to the information used to indicate the physical resource block set carrying the enhanced physical downlink control channel.
  • the processor 502 is configured to determine, according to the information about the physical resource block set indicating the enhanced physical downlink control channel, the received carrier corresponding to the enhanced physical downlink control channel, where the receiver 501 is configured to: Receiving, by the received EPDCCH, a physical downlink shared channel on the determined carrier,
  • the transmitter 503 is further configured to send, according to the received EPDCCH, a physical uplink shared channel on the determined carrier.
  • Embodiment 6 of the present invention will be described in detail below with reference to FIG.
  • the transmitter 601 is configured to send, to the user equipment, information for indicating a physical resource block set carrying the enhanced physical downlink control channel;
  • the processor 602 is configured to determine a carrier that the user equipment needs to be scheduled, and determine, according to the carrier, the physical resource block set that carries the enhanced physical downlink control channel corresponding to the carrier;
  • the transmitter 601 is further configured to send, by using the physical resource included in the physical resource block set, the enhanced physical downlink control channel to the user equipment, so that the user equipment is enhanced according to the physical downlink of the bearer.
  • the set of physical resource blocks of the control channel determines the carrier corresponding to the received enhanced physical downlink control channel;
  • the transmitter 601 is further configured to send, by using a carrier corresponding to the enhanced physical downlink control channel, a physical downlink shared channel corresponding to the enhanced physical downlink control channel to the user equipment, or, optionally,
  • the receiver 602 is configured to receive, on a carrier corresponding to the enhanced physical downlink control channel, a physical uplink shared channel corresponding to the enhanced physical downlink control channel sent by the user equipment.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • 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.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the components displayed for the unit may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

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

Abstract

L'invention concerne un procédé et un dispositif de transmission destinés à un canal de commande de liaison descendante. Ledit procédé comprend : la réception d'informations servant à indiquer un ensemble de blocs de ressources physiques qui porte un canal de commande de liaison descendante physique amélioré, et la réception de ce canal de commande de liaison descendante physique amélioré en fonction des informations servant à indiquer l'ensemble de blocs de ressources physiques qui porte le canal de commande de liaison descendante physique amélioré; selon les informations servant à indiquer l'ensemble de blocs de ressources physiques qui porte le canal de commande de liaison descendante physique amélioré, la détermination d'une porteuse qui correspond au canal de commande de liaison descendante physique amélioré (EPDCCH) reçu, et la réception d'un canal partagé de liaison descendante physique par le biais de la porteuse déterminée conformément à l'EPDCCH reçu, ou l'envoi d'un canal partagé de liaison montante physique par le biais de la porteuse déterminée suivant l'EPDCCH reçu. Ainsi, la performance d'un EPDCCH peut être améliorée en cas de ressources limitées.
PCT/CN2012/084389 2012-11-09 2012-11-09 Procédé et dispositif de transmission pour canal de commande de liaison descendante WO2014071611A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201280076659.4A CN104756413B (zh) 2012-11-09 2012-11-09 一种下行控制信道的传输方法和装置
PCT/CN2012/084389 WO2014071611A1 (fr) 2012-11-09 2012-11-09 Procédé et dispositif de transmission pour canal de commande de liaison descendante

Applications Claiming Priority (1)

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PCT/CN2012/084389 WO2014071611A1 (fr) 2012-11-09 2012-11-09 Procédé et dispositif de transmission pour canal de commande de liaison descendante

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102201885A (zh) * 2010-03-25 2011-09-28 电信科学技术研究院 一种载波调度信息传输方法及其装置
WO2012040901A1 (fr) * 2010-09-28 2012-04-05 富士通株式会社 Procédé, équipement utilisateur, station de base, et système de détermination d'une porteuse de composante ordonnancée dans un ordonnancement de porteuses croisées
CN102450073A (zh) * 2010-06-18 2012-05-09 联发科技股份有限公司 载波聚合下的探测方法

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Publication number Priority date Publication date Assignee Title
WO2008084624A1 (fr) * 2007-01-12 2008-07-17 Ntt Docomo, Inc. Dispositif de station de base, station mobile, système de communication radio et procédé de commande de communication
CN101801090B (zh) * 2009-02-05 2012-09-12 电信科学技术研究院 一种配置下行物理控制信道的方法、基站和用户终端

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102201885A (zh) * 2010-03-25 2011-09-28 电信科学技术研究院 一种载波调度信息传输方法及其装置
CN102450073A (zh) * 2010-06-18 2012-05-09 联发科技股份有限公司 载波聚合下的探测方法
WO2012040901A1 (fr) * 2010-09-28 2012-04-05 富士通株式会社 Procédé, équipement utilisateur, station de base, et système de détermination d'une porteuse de composante ordonnancée dans un ordonnancement de porteuses croisées

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