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WO2013174167A1 - Procédé de transmission d'informations de commande de liaison descendante, équipement utilisateur et station de base - Google Patents

Procédé de transmission d'informations de commande de liaison descendante, équipement utilisateur et station de base Download PDF

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Publication number
WO2013174167A1
WO2013174167A1 PCT/CN2013/072180 CN2013072180W WO2013174167A1 WO 2013174167 A1 WO2013174167 A1 WO 2013174167A1 CN 2013072180 W CN2013072180 W CN 2013072180W WO 2013174167 A1 WO2013174167 A1 WO 2013174167A1
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WIPO (PCT)
Prior art keywords
dci
message
public
resource
common
Prior art date
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PCT/CN2013/072180
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English (en)
Chinese (zh)
Inventor
夏金环
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication of WO2013174167A1 publication Critical patent/WO2013174167A1/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • 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
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to the field of communications, and in particular, to a method of transmitting downlink control information, a user equipment, and a base station. Background technique
  • LTE Long Term Evolution
  • the base station has downlink data to be sent to the user equipment (User Equipment, UE), the downlink data symbol needs to be mapped on the time-frequency resource and transmitted in the current subframe within a Transmission Time Interval (TTI).
  • TTI Transmission Time Interval
  • the downlink control information (DCI) is used to indicate scheduling information such as the location of the downlink data on the time-frequency resource and the modulation and coding mode of the data.
  • DCI downlink control information
  • Dedicated downlink data that only one UE needs to receive and detect in a TTI is indicated by a dedicated DCI.
  • Common downlink data received and detected by multiple UEs in one TTI is indicated by a public DCI, which may also be referred to as a public message, and may include a paging message, System Information (SI), or a random access response. Message (Random Access Response, RAR), etc.
  • a public DCI which may also be referred to as a public message, and may include a paging message, System Information (SI), or a random access response.
  • SI System Information
  • RAR Random Access Response
  • the embodiment of the invention provides a method for transmitting downlink control information, a user equipment, and a base station, so that two types are provided.
  • the UE can detect the respective public messages according to the public DCI.
  • a method for transmitting downlink control information including: receiving, from a base station, a common downlink control information DCI, where the common DCI is used to indicate a pin in a physical downlink shared channel PDSCH resource.
  • a method for transmitting downlink control information including: generating common downlink control information DCI, where the common DCI is used to indicate a first public message for a first type of user equipment UE in a physical downlink shared channel PDSCH resource.
  • the class UE sends the first public message or the resource occupied by the second public message to send the second public message to the second type of UE.
  • a method for transmitting downlink control information including: receiving public downlink control information DCI scrambled by an identifier, where the common DCI is used to indicate that the user equipment UE is in the physical downlink shared channel PDSCH resource.
  • a method for transmitting downlink control information comprising: generating a common downlink control information DCI scrambled by an identifier, the identifier corresponding to a category of a user equipment UE, the identifier being used to indicate the public DCI And belonging to the UE, the common DCI is used to indicate a resource occupied by a common message for the UE in the physical downlink shared channel PDSCH resource; sending the public DCI to the UE, and the resource occupied by the public message to the UE Send the public message.
  • a user equipment including: a receiving unit, configured to receive, from a base station, a common downlink control information DCI, where the common DCI is used to indicate that the first type of user equipment UE is in the physical downlink shared channel PDSCH resource. a resource occupied by a common message and a resource occupied by a second public message for the second type of UE; a detecting unit, configured to detect the first public message in a resource occupied by the first public message according to the public DCI Or the second public message in the resource occupied by the second public message.
  • a receiving unit configured to receive, from a base station, a common downlink control information DCI, where the common DCI is used to indicate that the first type of user equipment UE is in the physical downlink shared channel PDSCH resource.
  • a resource occupied by a common message and a resource occupied by a second public message for the second type of UE for the second type of UE
  • a detecting unit configured to detect the first public message in a resource occupied by
  • a base station including: a generating unit, configured to generate a common downlink control information DCI, where the common DCI is used to indicate a first public message for a first type of user equipment UE in a physical downlink shared channel PDSCH resource The occupied resource and the resource occupied by the second public message for the second type of UE; the sending unit, configured to send the public DCI to the first type of UE and the second type of UE, and occupy the first public message The resource sends the first public message to the first type of UE or The resource occupied by the second public message sends the second public message to the second type of UE.
  • a generating unit configured to generate a common downlink control information DCI, where the common DCI is used to indicate a first public message for a first type of user equipment UE in a physical downlink shared channel PDSCH resource The occupied resource and the resource occupied by the second public message for the second type of UE
  • the sending unit configured to send the public DCI to the first type of UE and the second
  • a user equipment including: a receiving unit, configured to receive a common downlink control information DCI scrambled by an identifier, where the common DCI is used to indicate that the user equipment UE is in the physical downlink shared channel PDSCH resource. a resource occupied by the public message; a detecting unit, configured to: when determining that the identifier is an identifier corresponding to the UE, detect a public message of the UE in a resource occupied by the public message according to the public DCI.
  • a base station including: a generating unit, configured to generate a common downlink control information DCI scrambled by an identifier, where the identifier corresponds to a category of a user equipment UE, the identifier is used to indicate the public DCI
  • the public DCI is used to indicate the resource occupied by the public message for the UE in the physical downlink shared channel (PDSCH) resource
  • the sending unit is configured to send the public DCI to the UE, and is occupied by the public message.
  • the resource sends the public message to the UE.
  • the common DCI indicates two common messages for the two types of UEs
  • the two types of UEs can respectively detect the respective public messages according to the common DCI. , thereby improving the transmission efficiency of public messages.
  • FIG. 1 is a schematic flow chart of a method of transmitting a DCI according to an embodiment of the present invention.
  • FIG. 2 is a schematic flow chart of a method of transmitting a DCI according to an embodiment of the present invention.
  • 3 is a schematic flow chart of a process of a method of transmitting a DCI according to an embodiment of the present invention.
  • 4 is a map of a first common message and a second common message in a PDSCH resource, in accordance with one embodiment of the present invention.
  • FIG. 5 is a map of a first public message and a second public message in a PDSCH resource according to another embodiment of the present invention.
  • FIG. 6 is a schematic flow chart of a method of transmitting a DCI according to an embodiment of the present invention.
  • FIG. 7 is a schematic flow chart of a method of transmitting a DCI according to an embodiment of the present invention.
  • FIG. 8 is a schematic block diagram of a user equipment according to an embodiment of the present invention.
  • 9 is a schematic block diagram of a base station in accordance with an embodiment of the present invention.
  • FIG. 10 is a schematic block diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 11 is a schematic block diagram of a base station according to an embodiment of the present invention. detailed description
  • the technical solution of the present invention can be applied to various communication systems, for example: Global mobile communication system
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access Wireless
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • the UE may also be referred to as a mobile terminal (MT), a mobile user equipment, etc., and may communicate with one or more core networks via a radio access network (eg, Radio Access Network, RAN), and the user equipment may be mobile.
  • a terminal such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device.
  • the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an eNB or an e-NodeB in LTE, and the present invention is not limited thereto.
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB eNodeB
  • LTE Long Term Evolution
  • FIG. 1 is a schematic flow chart of a method of transmitting a DCI according to an embodiment of the present invention.
  • the method of Figure 1 is performed by a UE, for example, a first type of UE or a second type of UE.
  • PDSCH Physical Downlink Shared Channel
  • the first type of UE and the second type of UE may be divided according to the capabilities of the UE.
  • the first type of UE may have a higher receiving capability, and may be referred to as a high-capacity UE.
  • the second type of UE has lower receiving capability, It is called a low-capacity UE and can only receive data in part of the bandwidth and cannot receive data in the full-band bandwidth.
  • the UEs of the first type and the second type of UEs may also be divided according to other attribute information of the UE, which is not limited by the embodiment of the present invention.
  • the common DCI indicates a resource occupied by a first common message for a first type of UE in a PDSCH resource and a resource occupied by a second public message for a second type of UE in a PDSCH resource, that is, Two common messages for two types of UEs can be indicated by one common DCI, which can improve resource utilization.
  • the common DCI may include a first part of the DCI and a second part of the DCI, where the first part of the DCI includes a first downlink resource block allocation field, where the first downlink resource block allocation field is used to indicate the first common message.
  • the second part of the DCI includes a second downlink resource block allocation field, and the second downlink resource block allocation field is used to indicate the number of physical resource blocks (PRBs) occupied by the second common message in the PDSCH resource.
  • PRBs physical resource blocks
  • the second part of the DCI may be dedicated by the second type of UE.
  • the first part of the DCI can be used by the first type of UE and the second type of UE, which can save resources.
  • the public DCI may further include a third part DCI, where the third part DCI may be used to indicate that the public DCI indicates two common messages.
  • the third portion of the DCI may also indicate that the public DCI indicates the first common message for the first type of UE, at which time the public DCI is used by the first type of UE.
  • the first type of UE may detect its own first public message according to the public DCI.
  • the public DCI may include used fields in the public DCI of the prior art, and the definition of each field is similar to the prior art, in order to avoid duplication, I will not repeat them here.
  • the third part of the DCI may also indicate that the public DCI indicates a common message, and the first type UE and the second type UE both receive the public message, that is, the first type UE and the second type UE need to receive the same public message.
  • the common DCI may include the used field in the public DCI of the prior art, and the first type UE and the second type UE both detect the public message indicated by the public DCI according to the public DCI, and the specific process may refer to the current There are techniques, in order to avoid repetition, we will not repeat them here.
  • the first type of UE may detect the first public message in the resource occupied by the first public message according to the public DCI. Specifically, the first type of UE may be according to the first Part of the DCI detects the first public message.
  • the second type of UE may detect the second public message in the resource occupied by the second public message according to the public DCI. Specifically, the second type of UE may detect the second common message according to the first part of the DCI and the second part of the DCI.
  • the second type of UE may determine, according to the first downlink resource block allocation field, an end position of the PRB occupied by the first common message in the PDSCH resource, and the next PRB of the end position.
  • the location of the second public message in the PDSCH resource and the location of the first public message in the PDSCH resource may be adjacent, that is, adjacent to the last PRB occupied by the first common message in the PDSCH resource.
  • One PRB is the first PRB occupied by the second public message in the PDSCH resource. In this way, it is not necessary to indicate to the second type of UE in the public DCI the starting position of the PRB occupied by the second common message in the PDSCH resource, thereby saving the overhead of the public DCI.
  • the second type of UE when the method is performed by the second type of UE, the second type of UE may be in the PDSCH resource according to the starting position of the PRB occupied by the second common message in the PDSCH resource and the second common message.
  • the number of PRBs occupied in the second public message is detected in the resource occupied by the second public message, and the starting position of the PRB occupied by the second public message in the PDSCH resource may be predefined.
  • the predefined starting location of the PRB occupied by the second common message in the PDSCH resource may be indicated by system information or Radio Resource Control (RRC) signaling. Or it may be a fixed position in the PDSCH resource, or may be the starting position of the dedicated subband of the second type UE in the PDSCH resource, or may be a position offset from the starting position of the dedicated subband by a fixed frequency domain.
  • RRC Radio Resource Control
  • the dedicated subband may be a dedicated subband that is divided for the second type of UE.
  • the second type of UE when the second type of UE is a low-capacity UE, it can only receive data in a part of the bandwidth, for example, can only receive data of 1/4 system bandwidth, then the 1/4 bandwidth can be called a dedicated sub-band of the low-capability UE.
  • the second type of UE may be obtained by means of high layer signaling or frequency hopping sent by the base station. In this way, it is not necessary to indicate to the second type of UE in the public DCI that the second public message accounts for PDSCH resources. The starting position of the PRB used, thereby saving the overhead of the public DCI.
  • the common DCI indicates two common messages for the two types of UEs
  • the two types of UEs can respectively detect the respective public messages according to the common DCI. , thereby improving the transmission efficiency of public messages.
  • FIG. 2 is a schematic flow chart of a method of transmitting a DCI according to an embodiment of the present invention.
  • the method of Figure 2 is performed by a base station.
  • 210 Generate a public DCI, where the common DCI is used to indicate resources occupied by a first common message for a first type of UE in a PDSCH resource and a second common message for a second type of UE.
  • the first type of UE and the second type of UE may be divided according to the capabilities of the UE.
  • the first type of UE may have a higher receiving capability, and may be referred to as a high-capacity UE.
  • the second type of UE has lower receiving capability and can be called a low-capacity UE. It can only receive data in part of the bandwidth and cannot receive data in the full-band bandwidth.
  • the first type of UE and the second type of UE may be further divided according to other attribute information of the UE, which is not limited by the embodiment of the present invention.
  • the common DCI may include a first part of the DCI and a second part of the DCI, where the first part of the DCI may include a first downlink resource block allocation field, where the first downlink resource block allocation field is used to indicate the first public The starting position and number of PRBs that the message occupies in the PDSCH resource.
  • the second part DCI may include a second downlink resource block allocation field, where the second downlink resource block allocation field is used to indicate the number of PRBs occupied by the second common message in the PDSCH resource. .
  • the location of the next PRB of the end position of the PRB occupied by the first common message in the PDSCH resource may be the starting position of the PRB occupied by the second common message in the PDSCH resource.
  • the starting position of the PRB occupied by the second common message in the PDSCH resource may be predefined, where the starting position of the PRB occupied by the second common message in the PDSCH resource may be indicated by system information or RRC signaling, Or a fixed position in the PDSCH resource, or a starting position of a dedicated subband of the second type UE in the PDSCH resource, or a position offset from the starting position of the dedicated subband by a fixed frequency domain.
  • the second part of the DCI may be dedicated by the second type of UE.
  • the first part of the DCI can be used by the first type of UE and the second type of UE, which can save resources.
  • the first public message is sent to the first type of UE or the second public message is sent to the second type of UE in the resource occupied by the second public message.
  • the public DCI may further include a third part DCI, where the third part DCI may be used to indicate that the public DCI indicates two common messages.
  • the third part of the DCI may be used to indicate that the public DCI indicates two common messages. If the base station determines to transmit only the first common message to the first type of UE, the third partial DCI may indicate that the public DCI indicates the first common message for the first type of UE, at which time the public DCI is used by the first type of UE.
  • the first type of UE may detect its own first public message according to the public DCI. At this time, the public DCI may include used fields in the public DCI of the prior art, and the definition of each field is similar to the prior art, in order to avoid duplication, I will not repeat them here.
  • the third part of the DCI may indicate that the public DCI indicates a common message, and at this time, the public DCI may include the public DCI of the prior art.
  • the used field, the UE of the first type and the UE of the second type are all detected by the public DCI according to the common DCI.
  • the specific process may refer to the prior art. To avoid repetition, details are not described herein again.
  • the first type of UE and the second type of UE may detect its own first public message according to the public DCI, and the second type of UE may detect its second public message according to the public DCI. .
  • the base station can separately transmit the common messages of the two types of UEs respectively, thereby improving the transmission efficiency of the common message.
  • FIG. 3 is a schematic flow chart of a process of a method of transmitting a DCI according to an embodiment of the present invention.
  • the base station generates a common DCI, where the common DCI may indicate resources occupied by the first common message for the first type of UE in the PDSCH resource and resources occupied by the second common message for the second type of UE in the PDSCH resource.
  • the common DCI may include a first partial DCI and a second partial DCI, the first partial DCI being used to indicate the first common message, and the first partial DCI and the second partial DCI may be used to indicate the second public message. Therefore, the first partial DCI can be shared by the first type of UE and the second type of UE, and the second partial DCI can be dedicated by the second type of UE.
  • the length of the common DCI may be the same as the length of the public DCI in the prior art, the first part of the DCI may include bits used in the prior art common DCI, and the second part of the DCI may be retained in the public DCI of the prior art.
  • the bits, the base station and the second type of UE may predefine the reserved bits as fields specific to the second type of UE.
  • the first part of the DCI may include a first downlink resource block allocation field, where the first downlink resource block allocation field may be used to indicate a location of the first common message in the PDSCH resource for the first type of UE, that is, the first public message is The starting position and number of PRBs occupied in the PDSCH resource.
  • the first part of the DCI may further include a first PUCCH power control field, similar to the PUCCH power control field in the public DCI of the prior art, where the first PUCCH power control field may be used to indicate a bit of the transport block sent by the base station to the first type of UE.
  • the number of corresponding PRBs may be used to indicate a bit of the transport block sent by the base station to the first type of UE. The number of corresponding PRBs.
  • the first part of the DCI may further include a Modulation and Coding Scheme (MCS) field, and the MCS field may be used to indicate a modulation mode used for the first common message and the second common message, and to the first class UE and the second The index corresponding to the transport block sent by the UE.
  • MCS Modulation and Coding Scheme
  • the first part of the DCI may also include other used fields in the public DCI of the prior art, such as format 0 and 1A difference identification fields, virtual resource block allocation type identification fields, and new data indication fields, etc., the definitions of these fields may be referred to In the prior art, in order to avoid repetition, details are not described herein again.
  • the second part of the DCI may include a second downlink resource block allocation field, and the second downlink resource block allocation field may be used to indicate the number of PRBs occupied by the PDSCH resource for the second common message of the second type of UE.
  • the length of the second downlink resource block allocation field may be 2 bits, and the mapping relationship between the 2nd bit of the second downlink resource block allocation field and the resource length occupied by the second common message may be defined, as shown in Table 1.
  • the narrow bandwidth may indicate the bandwidth that the second type of UE can support, and may also refer to the total number of PRBs that can be received.
  • the length of the second downlink resource block allocation field may be other number of bits
  • the mapping between the second downlink resource block allocation field and the number of PRBs occupied by the second common message may also be other mapping relationships. Not limited.
  • the starting position of the second public message in the PDSCH resource can be determined in different ways without indicating in the public DCI, which can save the overhead of the public DCI.
  • the location of the second common message in the PDSCH resource may be adjacent to the location of the first common message in the PDSCH resource, and the starting position of the occupied PRB may be occupied by the first common message in the PDSCH resource. The position of the next PRB at the end of the PRB.
  • FIG. 4 is a map of a first public message and a second common message in a PDSCH resource, in accordance with one embodiment of the present invention.
  • Fig. 4 the positional relationship of the first public message and the second public message in the LTE Release 8 system in the PDSCH resource is described. In this way, it is not necessary to indicate to the second type of UE in the public DCI the starting position of the PRB occupied by the second common message in the PDSCH resource, thereby saving the overhead of the public DCI.
  • the starting position of the second public message in the PDSCH resource may be predefined.
  • the starting position of the PRB occupied by the second common message in the PDSCH resource may be indicated by system information or RRC signaling, or may be a fixed position in the PDSCH resource, or may be a second type of UE in the PDSCH resource.
  • the starting position of the dedicated subband or may be a fixed frequency domain offset from the starting position of the dedicated subband.
  • the starting position of the second common message in the PDSCH resource is the starting position of the dedicated subband of the second class UE in the PDSCH resource.
  • the location of the dedicated sub-band may be determined by means of high-level signaling indication or frequency hopping. In this way, it is not necessary to indicate to the second type of UE in the common DCI the starting position of the PRB occupied by the second common message in the PDSCH resource, thereby saving the overhead of the common DCI.
  • 302. The base station sends, to the first type of UE and the second type of UE, the public DCI generated in step 301, and sends the first public message to the first type of UE and the second public message in the resource occupied by the first public message. A second public message is sent to the second type of UE in the resource.
  • the first type of UE detects the first public message in the resource occupied by the first public message according to the public DCI in step 302.
  • the first type of UE may detect the first public message in the resource occupied by the first public message according to the first part of the DCI in the public DCI. For example, the first type of UE may determine, according to the first downlink resource block allocation field, a starting position and number of PRBs occupied by the first common message in the PDSCH resource. The first type of UE may determine the modulation mode of the first common message and the index corresponding to the transport block sent by the base station to itself according to the MCS field. The first type of UE may also determine the number of bits of the transport block according to the first PUCCH power control field and the MCS field.
  • the specific operation process of the first type of UE for detecting the first public message may refer to the prior art. To avoid repetition, details are not described herein again.
  • the second type of UE detects the second type of public message in the resource occupied by the second public message according to the public DCI in step 302.
  • the second type of UE may detect the public message in the resource occupied by the second common message according to the first part of the DCI and the second part of the DCI in the public DCI.
  • the UE of the second type may determine, according to the first part of the DCI, the end position of the PRB occupied by the first common message in the PDSCH resource, and the location of the next PRB of the end position as the PRB occupied by the second common message in the PDSCH resource. starting point.
  • the second type of UE may detect the second location of the PRB occupied by the second common message in the PDSCH resource and the second downlink resource block allocation field in the second part of the DCI. Class public message.
  • the second type of UE may further detect the second resource in the resource occupied by the second common message according to the start position of the PRB occupied by the second common message in the PDSCH resource and the second downlink resource block allocation field in the second part of the DCI.
  • the public message of the class, the starting position of the PRB occupied by the second public message in the PDSCH resource may be predefined. For details, refer to step 301.
  • the second type of UE may further determine, according to the second PUCCH power control field in the second part of the DCI, the number of PRBs corresponding to the transport block sent by the base station to itself.
  • the modulation mode of the second common message and the index corresponding to the transport block may also be determined according to the MCS field of the first part of the DCI.
  • the number of bits of the transport block may also be determined according to the MCS field and the second PUCCH power control field.
  • the second type of UE may determine other related scheduling information of the second common message according to the first part of the DCI, and may refer to the prior art. To avoid repetition, details are not described herein again.
  • step 303 can be performed in parallel with step 304 or thereafter.
  • the common DCI indicates two common messages for the two types of UEs
  • the two types of UEs can respectively detect the respective public messages according to the common DCI. , thereby improving the transmission efficiency of public messages.
  • the public DCI may further include a third portion DCI, and in the case where the third portion DCI is used to indicate that the public DCI indicates two common messages, the above steps 301 to 304 may be performed.
  • the third portion of the DCI may include reserved bits in the prior art public DCI.
  • the third portion of the DCI may be 1 bit in length.
  • the public DCI in step 301 indicates two common messages, that is, the first public message and the second public message, then the base station determines to the first type of UE.
  • the second type of UE transmits the respective common messages of the two types of UEs
  • the value of the third part of the DCI may be set to "0".
  • the value of DCI when the value of DCI is "1", it can be predefined as a different meaning according to the actual situation.
  • the value of the third part of the DCI when the value of the third part of the DCI is "1", it can be said that the public DCI at this time can indicate the first public message, that is, the public DCI at this time is used by the first type of UE. Therefore, when the base station determines to send only the first public message to the first type of UE, the value of the third part of the DCI may be set to " ⁇ , and the first type of UE detects the first public message according to the public DCI at this time, and the specific process may refer to In the prior art, in order to avoid repetition, details are not described herein.
  • the value of the third part DCI when the value of the third part DCI is "1", it may also indicate that the common DCI indication at this time is jointly received by the first type UE and the second type UE. a common message. Therefore, when the base station determines to send the same common message to the first type of UE and the second type of UE, the value of the third part of the DCI may be set to "1", and the first type of UE and the second type of UE may be based on The public DCI at this time detects the same public message, and the specific process can refer to the prior art. To avoid repetition, details are not described herein.
  • FIG. 6 is a schematic flow chart of a method of transmitting a DCI according to an embodiment of the present invention.
  • the method of Figure 6 is performed by a UE, for example, a first type of UE or a second type of UE.
  • 610 Receive a public DCI scrambled by an identifier, where the common DCI is used to indicate a resource occupied by a public message for the UE in the PDSCH resource.
  • 620 When it is determined that the identifier is an identifier corresponding to the UE, according to the public DCI, detecting a public message of the UE in a resource occupied by the public message.
  • the public message of the UE is detected in the resource occupied by the public message according to the public DCI. That is, when the method is performed by the first type of UE, the first type of UE may detect its own public message according to the public DCI in the resources occupied by the public message. When the method is performed by the second type of UE, the second type of UE may detect its own public message according to the public DCI in the resources occupied by the public message.
  • the class of the UE may be a capability class of the UE, that is, may be divided according to the capability of the UE. For example, it can be divided into a first type of UE and a second type of UE.
  • the first type of UE may have a higher receiving capability, and may be referred to as a high-capacity UE, and is capable of receiving downlink data of a full-band bandwidth.
  • the second type of UE has lower receiving capability and can be called a low-capacity UE. It can only receive data in part of the bandwidth and cannot receive data in the full-band bandwidth.
  • the first type of UE and the second type of UE may be further divided according to other attribute information of the UE, which is not limited by the embodiment of the present invention.
  • the identifier when the identifier corresponds to the first type of UE, the identifier may include a System Information-Radio Network Temporary Identifier (SI-RNTI), and a paging wireless network temporary A Paging-Radio Network Temporary Identifier (P-RNTI) or a Random Access Response-Radio Network Temporary Identifier (RAR-RNTI).
  • SI-RNTI System Information-Radio Network Temporary Identifier
  • P-RNTI Paging-Radio Network Temporary Identifier
  • RAR-RNTI Random Access Response-Radio Network Temporary Identifier
  • the identifier when the identifier corresponds to the second type of UE, the identifier may include a second type of System Information-Radio Network Temporary Identifier (SSI-RNTI), Second Paging-Radio Network Temporary Identifier (SP-RNTI) or the second type of random access response-Radio Network Temporary Identifier (SRAR) - RNTI )
  • SSI-RNTI System Information-Radio Network Temporary Identifier
  • SP-RNTI Second Paging-Radio Network Temporary Identifier
  • SRAR random access response-Radio Network Temporary Identifier
  • the common DCI for the first type of UE and the public DCI for the second type of UE are respectively scrambled by different identifiers. Therefore, after the first type UE or the second type UE receives the public DCI, when determining When the identifier scrambling the public DCI is an identifier corresponding to its own category, Public DCI detects its own public messages.
  • the identifier scrambling the common DCI corresponds to the category of the UE, so that the common DCI can correspond to different classes of UEs, in the case that the base station transmits the public message for different classes of UEs, different categories
  • the UE can detect the corresponding public message according to the respective public DCI, thereby improving the transmission efficiency of the public message.
  • FIG. 7 is a schematic flow chart of a method of transmitting a DCI according to an embodiment of the present invention. The method of Figure 7 is performed by the base station.
  • the class of the UE may be a capability class of the UE, that is, may be divided according to the capability of the UE. For example, it can be divided into a first type of UE and a second type of UE.
  • the first type of UE may have a higher receiving capability, and may be referred to as a high-capacity UE, and is capable of receiving downlink data of a full-band bandwidth.
  • the second type of UE has lower receiving capability and can be called a low-capacity UE. It can only receive data in part of the bandwidth and cannot receive data in the full-band bandwidth.
  • the first type of UE and the second type of UE may be further divided according to other attribute information of the UE, which is not limited by the embodiment of the present invention.
  • the identifier when the identifier corresponds to the first type of UE, the identifier may include an SI-RNTI, a P-RNTI, or a RAR-RNTI.
  • the identifier when the identifier corresponds to the second type of UE, the identifier may include an SSI-RNTI, an SP-RNTI, or a SRAR-RNTI. It should be understood that these identifiers are newly defined identifiers that differ from prior art scrambled identifiers in order to be associated with an identifier corresponding to the first type of UE.
  • the base station upon determining to transmit the common message to the first type of UE, may generate a common DCI scrambled by an identifier corresponding to the first type of UE, the common DCI indicating a common message for the first type of UE.
  • the base station may generate a public DCI scrambled by an identifier corresponding to the second type of UE, and the public DCI indicates a public message for the second type of UE.
  • the first type UE and the second type UE can respectively receive the public DCI corresponding to themselves, and thus respectively according to the public A total of DCI detects its own public messages.
  • the base station can separately transmit the public indicated by the public DCI corresponding to the UEs of different classes. Messages, which can improve the transmission efficiency of public messages.
  • FIG. 8 is a schematic block diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment 800 of FIG. 8 includes a receiving unit 810 and a detecting unit 820.
  • the receiving unit 810 and the detecting unit 820 may be located in a processor of the user equipment 800.
  • the receiving unit 810 receives a common DCI from the base station, where the common DCI is used to indicate resources occupied by the first common message for the first type of UE in the PDSCH resource and resources occupied by the second public message for the second type of UE.
  • the detecting unit 820 detects the first public message in the resource occupied by the first public message or the second public message in the resource occupied by the second public message according to the public DCI.
  • the common DCI indicates two common messages for two types of UEs
  • the two types of UEs can respectively detect respective public messages according to the common DCI, thereby improving The efficiency of public message transmission.
  • the common DCI may include a first part of the DCI and a second part of the DCI, where the first part of the DCI may include a first downlink resource block allocation field, where the first downlink resource block allocation field is used to indicate the first public The starting position and number of PRBs that the message occupies in the PDSCH resource.
  • the second part DCI may include a second downlink resource block allocation field, where the second downlink resource block allocation field is used to indicate the number of PRBs occupied by the second common message in the PDSCH resource.
  • the detecting unit 820 may determine, according to the first downlink resource block allocation field, an end position of the PRB occupied by the first common message in the PDSCH resource. And the location of the next PRB in the end position is used as the starting position of the PRB occupied by the second common message in the PDSCH resource, according to the starting position of the PRB occupied by the second common message in the PDSCH resource, and the second public message. The number of PRBs occupied in the PDSCH resource, and the second public message is detected in the resource occupied by the second public message.
  • the detecting unit 820 may start the PRB in the PDSCH resource according to the second common message, and the second public The second public message is detected in the resource occupied by the second common message, and the starting position of the PRB occupied by the second public message in the PDSCH resource may be predefined.
  • the starting position of the PRB occupied by the second common message on the PDSCH resource may be indicated by system information or RRC signaling, or may be a fixed position in the PDSCH resource, or may be The second type of UE is at the beginning of the dedicated subband in the PDSCH resource, or may be a fixed frequency domain offset from the starting position of the dedicated subband.
  • the foregoing second part DCI may be dedicated by the second type of UE.
  • the public DCI may further include a third part DCI, where the third part DCI may be used to indicate that the public DCI indicates two common messages.
  • the common DCI indicates two common messages for the two types of UEs
  • the two types of UEs can respectively detect the respective public messages according to the common DCI. , thereby improving the transmission efficiency of public messages.
  • the base station 900 of FIG. 9 includes a generating unit 910 and a transmitting unit 920. Generating unit 910 and transmitting unit 920 may be located specifically within a processor of base station 900.
  • the generating unit 910 generates a common DCI, which is used to indicate, in the PDSCH resource, resources occupied by the first common message for the first type of UE and resources occupied by the second common message for the second type of UE.
  • the sending unit 920 sends the common DCI to the first type of UE and the second type of UE, and sends the first public message to the first type of UE or the resource occupied by the second public message in the resource occupied by the first public message. Sending a second public message to the second type of UE.
  • the base station can separately transmit the common messages of the two types of UEs respectively, thereby improving the transmission efficiency of the common message.
  • the common DCI may include a first part of the DCI and a second part of the DCI, where the first part of the DCI may include a first downlink resource block allocation field, where the first downlink resource block allocation field is used to indicate the first public The starting position and number of PRBs that the message occupies in the PDSCH resource.
  • the second part of the DCI may include a second downlink resource block allocation field, and a second downlink resource block allocation field The number of PRBs used to indicate that the second common message is occupied in the PDSCH resource.
  • the foregoing second part DCI may be dedicated to the second type of UE.
  • the public DCI may further include a third part, the DCI, and the third part.
  • the DCI is used to indicate that the public DCI indicates two common messages.
  • the base station can separately transmit the common messages of the two types of UEs respectively, thereby improving the transmission efficiency of the common message.
  • FIG. 10 is a schematic block diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment 1000 of FIG. 10 includes a receiving unit 1010 and a detecting unit 1020.
  • the receiving unit 1010 and the detecting unit 1020 may be located in a processor of the user equipment 1000.
  • the receiving unit 1010 receives the public DCI scrambled by the identifier, the common DCI being used to indicate the resources occupied by the public message for the UE in the PDSCH resource.
  • the detecting unit 1020 determines that the identifier is an identifier corresponding to the UE, the public message of the UE is detected in the resource occupied by the common message according to the public DCI.
  • the identifier scrambling the common DCI corresponds to the category of the UE, so that the common DCI can correspond to different classes of UEs, in the case that the base station transmits the public message for different classes of UEs, different categories
  • the UE can detect the corresponding public message according to the respective public DCI, thereby improving the transmission efficiency of the public message.
  • the identifier when the identifier corresponds to the first type of UE, the identifier may include an SI-RNTL P-RNTI or a RAR-RNTI. Or when the identifier corresponds to the second type of UE, the identifier may include SSI-RNTI, SP-RNTI or SRAR-RNTI.
  • the base station 1100 of Fig. 11 includes a generating unit 1110 and a transmitting unit 1120.
  • the generating unit 1110 and the transmitting unit 1120 may be specifically located in a processor of the base station 1100.
  • a generating unit 1110 generates the common DCI scrambling identifier, the identifier corresponding to another UE class 1 J, the identifier for indicating the UE belongs to the common DCI, DCI is used to indicate the common resources directed to the PDSCH The resources occupied by the UE's public messages.
  • the sending unit 1120 sends the public DCI to the UE, and the resource occupied by the public message sends a public message to the UE.
  • the base station can separately transmit the public indicated by the public DCI corresponding to the UEs of different classes. Messages, which can improve the transmission efficiency of public messages.
  • the identifier when the identifier corresponds to the first type of UE, the identifier may include an SI-RNTL P-RNTI or a RAR-RNTI. Or when the identifier corresponds to the second type of UE, the identifier may include SSI-RNTI, SP-RNTI or SRAR-RNTI.
  • the base station can separately transmit the public indicated by the public DCI corresponding to the UEs of different classes. Messages, which can improve the transmission efficiency of public messages.
  • 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 by the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units.
  • 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)
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  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention porte sur un procédé de transmission d'informations de commande de liaison descendante, un équipement utilisateur et une station de base. Le procédé consiste à : recevoir des informations de commande de liaison descendante (DCI) communes en provenance d'une station de base, les DCI communes étant utilisées pour indiquer une ressource occupée par un premier message commun pour un premier type d'équipement utilisateur (UE) et une ressource occupée par un second message commun pour un second type d'UE dans des ressources de canal partagé de liaison descendante physique (PDSCH) ; et détecter, conformément aux DCI communes, le premier message commun dans la ressource occupée par le premier message commun ou le second message commun dans la ressource occupée par le second message commun. Selon des modes de réalisation de la présente invention, étant donné que les DCI communes indiquent deux messages communs pour deux types d'UE, lorsque la station de base envoie les deux messages communs indiqués par les DCI communes, chacun des deux types d'UE peut détecter un message commun respectif conformément aux DCI communes, ce qui permet d'améliorer l'efficacité de transmission du message commun.
PCT/CN2013/072180 2012-05-23 2013-03-05 Procédé de transmission d'informations de commande de liaison descendante, équipement utilisateur et station de base Ceased WO2013174167A1 (fr)

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