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WO2016161581A1 - Procédé et appareil permettant d'acquérir des informations de commande de liaison descendante, terminal et station de base - Google Patents

Procédé et appareil permettant d'acquérir des informations de commande de liaison descendante, terminal et station de base Download PDF

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Publication number
WO2016161581A1
WO2016161581A1 PCT/CN2015/076103 CN2015076103W WO2016161581A1 WO 2016161581 A1 WO2016161581 A1 WO 2016161581A1 CN 2015076103 W CN2015076103 W CN 2015076103W WO 2016161581 A1 WO2016161581 A1 WO 2016161581A1
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Prior art keywords
information
identifier
terminal
scheduled
local
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PCT/CN2015/076103
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English (en)
Chinese (zh)
Inventor
刘永俊
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2015/076103 priority Critical patent/WO2016161581A1/fr
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Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present invention relates to the field of network communication technologies, and in particular, to a method, an apparatus, a terminal, and a base station for acquiring downlink control information.
  • the Internet of Things can connect any item with the Internet, and can intelligently identify, locate, track, monitor and manage the items in the network.
  • things Networking is the Internet of things connected.
  • the Internet of Things involves a large number of terminals that are scheduled by the base station.
  • the scheduling of the terminal in the Internet of Things is completed by the base station transmitting DCI (English name: Downlink Control Information, full name in Chinese: downlink control information) to the terminal, and the DCI includes scheduling information for the terminal.
  • DCI Korean name: Downlink Control Information, full name in Chinese: downlink control information
  • the base station periodically sends DCI to the terminal, and after the terminal receives the DCI, performs verification to verify whether the received DCI is correct. If correct, the terminal performs data transmission according to the scheduling information in the DCI.
  • the DCI includes scheduling information of multiple terminals, and for any one of the terminals, it is necessary to receive scheduling information of all terminals included in the DCI, thereby verifying whether the DCI is correctly received, but for any one of them.
  • the terminal only the scheduling information of the terminal itself is useful, and the scheduling information of the remaining terminals is useless information, and the terminal must receive and verify the useless information, which causes the terminal to consume power seriously during the process of receiving the DCI.
  • the embodiments of the present invention provide a method, an apparatus, a terminal, and a base station for acquiring downlink control information, which are used to alleviate a high power consumption problem caused by receiving a large amount of useless information in a process of receiving a DCI.
  • an embodiment of the present invention provides a method for acquiring downlink control information, where the method includes:
  • the base station Acquiring, in the process of receiving the downlink control information DCI, the first information sent by the base station, where the first information includes the identifier information of any one or more to-be-scheduled terminals, where the first information is part of the information in the DCI;
  • the second information is continuously obtained, where the second information includes scheduling information of the terminal to be scheduled, and the second information is the DCI except The remaining information outside the first message.
  • the method further includes:
  • the second information is refused to be received, and/or,
  • the identifier information of the to-be-scheduled terminal When it is detected that the identifier information of the to-be-scheduled terminal does not include the local terminal identifier information, enter a sleep state; and/or,
  • the first information of the next period is re-acquired, and in the first information of the next period, the to-be-scheduled terminal is detected. Whether the identification information includes the local terminal identification information.
  • the received first information further includes a check field, where the method further includes:
  • the second information is acquired.
  • the identifier information of the scheduling terminal includes: any one or more of the identifier of the to-be-scheduled terminal, the group identifier of the to-be-scheduled terminal, the corresponding identifier of the to-be-scheduled terminal identifier, and the corresponding identifier of the group identifier to which the to-be-scheduled terminal belongs. ;
  • the local terminal identification information includes any one or more of a local terminal identifier, a group identifier of the local terminal, a corresponding identifier of the local terminal identifier, and a corresponding identifier of the group identifier to which the local terminal belongs.
  • the first possible implementation manner of the first aspect, the second possible implementation manner of the first aspect, and the third implementation manner of the first aspect, in a fourth implementation manner of the first aspect also includes:
  • the identifier information of the to-be-scheduled terminal in the first information includes the local terminal identifier information, and the identifier information of the to-be-scheduled terminal is not the identifier of the to-be-scheduled terminal, acquiring the second information, Determining the to-be-scheduled terminal identifier by using the second information, or determining the to-be-scheduled terminal identifier by using the first information and the second information.
  • an embodiment of the present invention provides an apparatus for acquiring downlink control information, where the apparatus includes:
  • an acquiring unit configured to acquire first information sent by the base station, where the first information includes identifier information of any one or more to-be-scheduled terminals, where the first information is the DCI And the second information is obtained when the identifier information of the to-be-scheduled terminal includes the local terminal identifier information, where the second information includes scheduling information of the terminal to be scheduled, and the second information is Information remaining in the DCI except the first information;
  • a storage unit configured to store the first information and the second information acquired by the acquiring unit.
  • the device further includes:
  • the device also includes:
  • the information rejection unit is configured to refuse to receive the second information when detecting that the identification information of the to-be-scheduled terminal acquired by the acquiring unit does not include the local terminal identification information, and is further configured to detect When the identifier information of the to-be-scheduled terminal that is obtained by the acquiring unit does not include the local terminal identifier information, enter a sleep state;
  • the acquiring unit is further configured to: when detecting that the identifier information of the to-be-scheduled terminal does not include the local terminal identifier information, re-acquire the first information of the next period, and the first information in the next period And detecting, by the identifier information of the to-be-scheduled terminal, the local terminal identifier information.
  • the device further includes:
  • a checking unit configured to: when the first information received by the receiving and acquiring unit includes a check field, after acquiring the first information, performing the first information by using the check field check;
  • the obtaining unit is further configured to: when the verification of the first information by the verification unit is successful, and the detecting that the identification information of the to-be-scheduled terminal includes the local terminal identification information, acquiring the Second message.
  • the identifier information of the scheduling terminal includes: any one or more of the identifier of the to-be-scheduled terminal, the group identifier of the to-be-scheduled terminal, the corresponding identifier of the to-be-scheduled terminal identifier, and the corresponding identifier of the group identifier to which the to-be-scheduled terminal belongs. ;
  • the local terminal identification information includes any one or more of a local terminal identifier, a group identifier of the local terminal, a corresponding identifier of the local terminal identifier, and a corresponding identifier of the group identifier to which the local terminal belongs.
  • the obtaining unit is further configured to: when the identifier information of the to-be-scheduled terminal in the first information includes the local terminal identifier information, and the identifier information of the to-be-scheduled terminal is not the terminal identifier to be scheduled Obtaining the second information;
  • An identifier determining unit configured to determine the to-be-scheduled terminal identifier by using the second information acquired by the acquiring unit, or determine the to-be-scheduled by using the first information and the second information Terminal identification.
  • an embodiment of the present invention provides a terminal, where the terminal includes:
  • a memory for storing information including program instructions
  • a processor coupled to the memory for controlling execution of the program instructions, specifically for
  • the base station Acquiring, in the process of receiving the downlink control information DCI, the first information sent by the base station, where the first information includes the identifier information of any one or more to-be-scheduled terminals, where the first information is part of the information in the DCI;
  • the second information is continuously obtained, where the second information includes scheduling information of the terminal to be scheduled, and the second information is the DCI except The remaining information outside the first message.
  • the terminal further includes:
  • the processor is further configured to: when it is detected that the identifier information of the to-be-scheduled terminal does not include the local terminal identifier information, refuse to receive the second information, and is further configured to: when detecting the identifier of the to-be-scheduled terminal When the information does not include the local terminal identifier information, the user enters a dormant state; and is further configured to re-acquire the first information of the next period when the identifier information of the to-be-scheduled terminal does not include the local terminal identifier information, and In the first information of the next period, it is detected whether the identifier information of the to-be-scheduled terminal includes the local terminal identifier information.
  • the first information that is obtained by the processor further includes a check field, where The processor is further configured to: after obtaining the first information, verify the first information by using the check field;
  • the second information is acquired.
  • the identification information of the to-be-scheduled terminal includes: any one of a to-be-scheduled terminal identifier, a group identifier to which the to-be-scheduled terminal belongs, a corresponding identifier of the to-be-scheduled terminal identifier, and a corresponding identifier of the group identifier to which the to-be-scheduled terminal belongs. Species or several
  • the local terminal identification information includes any one or more of a local terminal identifier, a group identifier of the local terminal, a corresponding identifier of the local terminal identifier, and a corresponding identifier of the group identifier to which the local terminal belongs.
  • the processor is further configured to: when the identifier information of the to-be-scheduled terminal in the first information includes the local terminal identifier information, and the identifier information of the to-be-scheduled terminal is not the identifier of the to-be-scheduled terminal, obtain Determining, by the second information, the identifier of the to-be-scheduled terminal, or determining, by using the first information and the second information, the identifier of the to-be-scheduled terminal.
  • the embodiment of the present invention provides a method for acquiring downlink control information, where the method includes:
  • the method further includes:
  • the first information including the check field is sent to all of the terminals.
  • the identifier information of the to-be-scheduled terminal includes: a to-be-scheduled terminal identifier, and a group identifier to which the to-be-scheduled terminal belongs Corresponding identifier of the to-be-scheduled terminal identifier, the to-be-scheduled terminal Any one or several of the corresponding identifiers of the group IDs to which the end belongs.
  • an embodiment of the present invention provides a device for acquiring downlink control information, where the device includes:
  • An information generating unit configured to generate first information according to the identifier information of the one or more to-be-scheduled terminals, where the first information is part of information in the downlink control information DCI, and is further configured to generate, according to the scheduling information of the to-be-scheduled terminal a second information, where the second information is information remaining in the DCI except the first information;
  • a sending unit configured to send the first information and the second information generated by the information generating unit to all terminals, where all terminals serve all local terminals serving the base station, and all the terminals include the The terminal to be scheduled.
  • the device further includes:
  • a field adding unit configured to add a check field to the first information generated by the information generating unit
  • the sending unit is further configured to send, by using the field adding unit, the first information that includes the check field to all the terminals.
  • the identifier information of the to-be-scheduled terminal includes: a to-be-scheduled terminal identifier, and a group identifier to which the to-be-scheduled terminal belongs And any one or more of the corresponding identifier of the to-be-scheduled terminal identifier and the corresponding identifier of the group identifier to which the to-be-scheduled terminal belongs.
  • an embodiment of the present invention provides a base station, where the base station includes:
  • a memory for storing information including program instructions
  • a processor coupled to the memory and the transceiver, for controlling execution of the program instruction, specifically, generating first information according to identifier information of one or more to-be-scheduled terminals, where the first information is downlink control a part of the information in the DCI; generating second information according to the scheduling information of the to-be-scheduled terminal, where the second information is information remaining in the DCI except the first information;
  • the transceiver is configured to send the first information and the second information generated by the processor to all terminals, where all terminals serve all local terminals serving the base station, and all the terminals include The scheduling terminal is mentioned.
  • the processor is further configured to add a check field to the first information
  • the transceiver is further configured to send, by the processor, the first information that includes the check field to the all terminals.
  • the identifier information of the to-be-scheduled terminal includes: a to-be-scheduled terminal identifier, and a group identifier to which the to-be-scheduled terminal belongs And any one or more of the corresponding identifier of the to-be-scheduled terminal identifier and the corresponding identifier of the group identifier to which the to-be-scheduled terminal belongs.
  • An embodiment of the present invention provides a method, an apparatus, a terminal, and a base station for acquiring downlink control information.
  • the first information sent by the base station is obtained, and when the identifier information of the to-be-scheduled terminal in the first information is detected,
  • the local terminal identifies the information
  • the local terminal continues to acquire the second information, where the first information is part of the information in the DCI, and the second information is information remaining in the DCI except the first information.
  • the technical solution provided in this embodiment only needs to acquire a part of the information in the DCI, and only when the local terminal is scheduled to be scheduled, whether the terminal is scheduled to receive all the DCIs.
  • the technical solution provided by the embodiment significantly reduces the power consumption when the terminal receives the DCI.
  • Figure 1-1 is a schematic diagram of an application scenario of a method for acquiring downlink control information according to an embodiment of the present invention
  • FIG. 1 is a flowchart of a method for acquiring downlink control information according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for acquiring downlink control information according to another embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a device for acquiring downlink control information according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of another apparatus for acquiring downlink control information according to another embodiment of the present invention.
  • 4-1 is a schematic structural diagram of a device for acquiring downlink control information according to an embodiment of the present invention.
  • 4-2 is a schematic structural diagram of a device for acquiring downlink control information according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a terminal used for acquiring downlink control information according to another embodiment of the present disclosure
  • FIG. 5-1 is a schematic structural diagram of a base station used in a method for acquiring downlink control information according to another embodiment of the present invention.
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency-Division Multiple Access
  • SC-FDMA single carrier FDMA
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • the user equipment may be a wireless terminal or a wired terminal, and the wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem.
  • the wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal
  • RAN Radio Access Network
  • the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • a wireless terminal may also be called a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, and a Remote Terminal.
  • Remote Terminal Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
  • a base station (e.g., an access point) can be a device in an access network that communicates with wireless terminals over one or more sectors over an air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolution in LTE.
  • BTS Base Transceiver Station
  • NodeB base station
  • WCDMA evolution in LTE.
  • a type of base station (NodeB or eNB or e-NodeB, evolutional Node B) is not limited in the present invention.
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • the base station serves three local terminals as an example.
  • this application scenario includes: one base station and three local terminals, and three local terminals are respectively represented by A, B, and C, where A and B are to be scheduled terminals, C
  • a and B are to be scheduled terminals
  • C For terminals that are not scheduled, the base station can communicate with terminals A, B, and C, respectively.
  • the character naming of the local terminal involved in the FIG. 1-1 is only for the sake of brevity, and the embodiment does not limit this, and of course, other representations and base station services are also available.
  • the local terminal and the local terminal are the to-be-scheduled terminals, and are not limited to the above description in this embodiment.
  • An embodiment of the present invention provides a method for acquiring downlink control information, where the method is applied to a terminal in a wireless communication system to receive a DCI process sent by a base station.
  • the DCI includes the first information and the second information.
  • the terminal determines whether the local terminal identifier information is included in the current information by using the identifier information carried in the first information. When the local terminal identifier information is carried in the identifier information, the local terminal continues to acquire the second information.
  • the local terminal only needs to obtain a part of the information in the DCI, and use this part of the information to determine whether the local terminal is scheduled this time, and if so, continue to receive another part of the information in the subsequent DCI, instead of In the technology, the local terminal must receive the entire DCI from the base station, so the technical solution provided by this embodiment can reduce the power consumption when the local terminal receives the DCI.
  • an embodiment of the present invention provides a method for acquiring downlink control information, which is applied to a terminal, and for a more specific description,
  • the terminal that executes the method flow is described in the form of a local terminal, as shown in FIG. 1 , the method includes:
  • the first information includes the identifier information of any one or more to-be-scheduled terminals, and is part of the information in the DCI.
  • the second information includes scheduling information of the terminal to be scheduled, and is information remaining in the DCI except the first information, that is, the first information and the second information constitute a DCI.
  • the first information includes the identifier information of the one or more to-be-scheduled terminals
  • the step 102 is to detect whether the local terminal is included in the to-be-scheduled terminal, and specifically, the first information is detected. Whether the identification information of the scheduling terminal includes the local terminal identification information.
  • the method for obtaining the downlink control information is provided by the embodiment of the present invention.
  • the local terminal In the process of receiving the DCI, the local terminal first acquires the first information sent by the base station, and when detecting that the identifier information of the to-be-scheduled terminal in the first information includes the local terminal identifier, When the information is received, the local terminal continues to acquire the second information, where the first information is part of the information in the DCI, and the second information is information remaining in the DCI except the first information.
  • the technical solution provided in this embodiment only needs to acquire a part of the information in the DCI, and only when the local terminal is scheduled to be scheduled, whether the terminal is scheduled to receive all the DCIs. Continuing to obtain another part of the information of the DCI, the technical solution provided by the embodiment significantly reduces the power consumption when the terminal receives the DCI.
  • Another embodiment of the present invention provides a method for acquiring downlink control information.
  • the method for detecting that the identifier information includes the local terminal information is detected.
  • the embodiment will give an execution flow in the case of no inclusion, and the process includes:
  • the second information is refused to be received, or the local terminal is instructed to enter a dormant state, or the second information is refused to be received. Indicates that the local terminal is in a sleep state.
  • the identification information of the terminal to be scheduled does not include the local terminal identifier
  • the local terminal is not scheduled
  • the other may be: the local terminal is scheduled.
  • the first information is unpacked, so that no information matching the local terminal identification information is detected in the identification information.
  • the terminal mentioned here is a general term for the terminal to be scheduled.
  • the DRX English full name: Discontinuous Receive, Chinese full name: discontinuous reception
  • the terminal only needs to monitor during the receiving time specified by DRX.
  • the DRX cycle is often much longer than the DCI cycle.
  • the former can be minutes or even hours, while the latter may be less than one second. In this way, in the time period when the monitoring is not needed, as long as the terminal has no data to send, it can enter the sleep state, thereby saving power consumption.
  • the base station since the base station will transmit the DCI to the terminal multiple times within one DRX cycle, even if the terminal fails to receive in one of the DCI cycles, the terminal can continue to receive in the next DCI cycle, improving reliability.
  • the maximum number of times the terminal receives DCI is the number of times the DCI is sent in one DRX cycle.
  • the DCI may be sent only once per DRX cycle. In this case, if the terminal does not find its own identifier after receiving the first information, it may be considered that this time is not scheduled.
  • the local terminal may continue to receive in the next DCI period, and re-determine whether it is scheduled.
  • the first information of the next period is re-acquired, and in the first information of the next period, whether the identifier information of the to-be-scheduled terminal includes the local terminal identifier information is detected.
  • the judgment method is the same as the step procedure involved in the above 102 until the maximum number of received DCIs specified by the local terminal is reached. If the local terminal still does not detect the inclusion of its own identifier in the first information, it is considered that this time is not scheduled. .
  • the local terminal will sleep.
  • Another embodiment of the present invention provides a method for acquiring downlink control information.
  • the local terminal receives the first information and does not detect the identity of the first information, the local terminal may be the local terminal. Unpacking error caused.
  • the implementation flow of the implementation is proposed, as shown in FIG. 2, including:
  • the base station adds a check field to the first information.
  • the base station sends the first information that carries the check field to the local terminal.
  • the local terminal After obtaining the first information, the local terminal performs verification on the first information by using a check field.
  • the check field involved in this embodiment is used to verify whether the content received by the first information is correct, so that after receiving the first information once, it can be directly determined that the local terminal is not. Is scheduled or unpacked error, if not scheduled, you can go directly to sleep, if it is unpacking error, you can continue to receive the next first message.
  • the actual content of the check field is determined by the check mode adopted by the local terminal.
  • the check mode may be that the base station negotiates with the local terminal before the base station sends the DCI, or the base station specifies the local.
  • the verification method used by the terminal For example, the verification method can be parity.
  • the to-be-scheduled terminal includes not only the downlink to-be-scheduled terminal identifier but also the uplink terminal identifier.
  • a terminal identifier, and each of the to-be-scheduled terminals corresponds to one identifier, but in this embodiment, only the uplink to-be-scheduled terminal identification information is schematically given, and the identification information of all the uplink scheduling to-be-scheduled terminals is shown. Similarly, the downlink scheduling terminal identification information is given.
  • the composition of the first information including this check field can now be explained by the following Table 1.
  • the first information includes a DCI length, downlink pending terminal identification information, uplink to-be-scheduled terminal identification information, and a check field.
  • the information may be: the identifier of the terminal to be scheduled, the group identifier of the terminal to be scheduled, the corresponding identifier of the terminal identifier to be scheduled, and the corresponding identifier of the group identifier to which the terminal to be scheduled belongs, and may be any one of the four types of identification information listed above or Several.
  • the identifier corresponding to the to-be-scheduled terminal identifier may be a short identifier, and the short identifier is shorter than the original to-be-scheduled terminal identifier, and may be some of the original identifiers, such as the last 4 digits, or mapped with the original identifier of the to-be-scheduled terminal.
  • the short identifier here is allocated by the base station for the terminal to be scheduled.
  • the short identifier assigned by the base station to the terminal is notified to the terminal before the first information is sent. For example, the base station may transmit the message through a new identifier or be carried in a Random Access Response and send it to the terminal.
  • the identifier corresponding to the group identifier to which the terminal to be scheduled belongs may be represented by a bitmap.
  • the local terminal identification information includes: a local terminal identifier, a group identifier of the local terminal, a corresponding identifier of the local terminal identifier, a corresponding identifier of the group identifier to which the local terminal belongs, or the like, or may be the four types of identification information listed above. Any one or several of them.
  • Another embodiment of the present invention provides a method for acquiring downlink control information.
  • the DCI length set by the base station is changing.
  • the DCI is divided into two parts: DCI0 and DCI1.
  • the length of the DCI0 is fixed.
  • the DCI0 includes the length information of the entire DCI and the identifier information of the terminal to be scheduled.
  • the identifier information of the terminal to be scheduled is the identifier of all the terminals to be scheduled in the current DCI period; At least a scheduling letter containing the terminal to be scheduled
  • the scheduling information may be: scheduled channel, MCS (English full name: Modulation and Coding Scheme, Chinese full name: modulation and coding mode), scheduling start time, scheduling duration and other information.
  • the DCI0 and DCI1 mentioned here correspond to the first information and the second information described above, respectively.
  • the following describes the composition of the DCI0 and the corresponding execution flow of the downlink control information when the identification information is in different forms, and the local terminal indicates the information in the form of an identification information entry.
  • Information corresponding to the identification information in DCI0 For example, when the identifier information in the DCI0 is the identifier of the terminal to be scheduled, correspondingly, the local terminal uses the local terminal identifier as the local terminal identifier information to perform detection.
  • the identifier information in the first information is the terminal identifier to be scheduled:
  • a to-be-scheduled terminal identifier in DCI0 can uniquely represent a to-be-scheduled terminal. That is, when the local terminal receives the DCI and the local terminal unpacks correctly, when the local terminal identifier is included in the terminal identifier to be scheduled, the local terminal continues to receive DCI1, or the local terminal enters sleep, the specific content is as shown in FIG. 1 The corresponding method flow shown in FIG. 2 is the same, and the description is not repeated here.
  • the current DCI indicates that the terminal to be scheduled by the base station includes: a downlink to-be-scheduled terminal and an uplink to-be-scheduled terminal, and includes m downlink to-be-scheduled terminals, n uplink to-be-scheduled terminals, and the to-be-scheduled terminals.
  • the identifier is represented by the downlink terminal identifier 1 ... the downlink terminal identifier m, the uplink terminal identifier 1 ... the uplink terminal identifier n, and specifically, will be described by the following Table 2.
  • DCI0 includes: DCI length, downlink scheduling number, downlink terminal identifier 1, ... downlink terminal identifier m, uplink scheduling number, uplink terminal identifier 1, ..., and uplink terminal identifier n.
  • the number of downlink scheduling may not be included.
  • the number of uplink scheduling adding the number of the downlink scheduling number and the number of uplink scheduling, only to more clearly explain the number of terminals to be scheduled this time.
  • the terminal identifier may be that when the terminal is initially connected to the network, the base station carries the terminal to the terminal through the Random Access Response, and the base station may also notify the terminal of the identifier assigned to the terminal by using other forms, and no longer A note.
  • the identifier information in the first information is a corresponding identifier of the terminal identifier to be scheduled.
  • the identification information is a short identifier as an example, and the specific short identifier may be combined with the corresponding description after step 203.
  • the case where the identifier information is a short identifier is described in detail in Table 3 below.
  • the table 3 is based on the description format of the foregoing Table 2 and the corresponding entry, except that the downlink terminal identifier is the downlink terminal short identifier, and the uplink terminal is The identifier is the short identifier of the uplink terminal.
  • the identification information is represented by a short identifier, which is shorter than the original terminal identifier, and may be some of the original identifier, such as the last 4 digits, or a short identifier mapped to the original identifier.
  • the terminal identifier is often long. For example, a terminal identifier is 20 bits, and the length of the DCI0 is fixed. Therefore, as shown in Table 2, the method of identifying the information may limit the number of terminals that can be scheduled.
  • the number of terminals listening to the same base station signal is often very large, so there will be a huge number of terminal identifiers, although the local terminal only needs to receive DCI0 to know that it is not scheduled, but if the length of DCI0 is long It still needs a certain amount of energy to receive, so using short marks can significantly improve the receiving efficiency.
  • the DCI0 In combination with the description of the peer identifier, for example, when the terminal identifier is 20 bits and the short identifier is the last 4 digits of the terminal identifier, then the DCI0 only includes the short identifier of 4 bits, and the same length is compared with the 20-bit terminal identifier.
  • the DCI0 can contain 5 times the number of terminals, or under the premise of scheduling the same number of terminals, the length of the DCI0 is reduced to about 1/5 of the original, so the local terminal DCI receives the work. The energy consumption is greatly reduced, and can be reduced by up to 80% to 90%.
  • the DCI0 does not contain complete identification information in the second aspect, the information contained in the DCI1 is required for the local terminal to more clearly determine whether it is scheduled and what scheduling information is to be executed. Corresponding adjustments are made to determine the complete pending terminal identifier according to the DCI, and the terminal identifier to be scheduled may be determined by the second information (DCI0) or by the first information and the second information (DCI1).
  • the DCI1 may include the complete to-be-scheduled terminal identifier, or the remaining identifier bits in the complete identifier except for the identifier bits already included in the DCI0.
  • the terminal identifier to be scheduled can be determined by using the second information.
  • the first information and the second information are required to be determined.
  • the terminal identifier to be scheduled That is, the local terminal receives the DCI1 after receiving the DCI0, and then receives the DCI1, and obtains the complete pending terminal identifier, that is, obtains the complete to-be-scheduled terminal identifier directly from the DCI1, or obtains the remaining to-be-scheduled terminal identifier from the DCI1. , combined with the short identifier in DCI0 to form a complete terminal identifier.
  • the identifier information in the first information is a group identifier to which the terminal to be scheduled belongs.
  • DCI0 may also include the identifier of the group to which all the terminals to be scheduled in the current DCI period belong.
  • the terminal accesses the network, the terminal is grouped and the group ID of the terminal delivered by the base station is obtained.
  • the local terminal determines whether the identifier information included in the DCI0 includes the local terminal group identifier, which is similar to the method shown in the first aspect or the second aspect, except that in the third aspect, the local terminal It is judged according to the group identifier of the terminal to be scheduled.
  • the base station is not necessarily all terminals that schedule the entire group, so the complete identification information of the scheduled terminal should be included in DCI1.
  • DCI0 includes: DCI length Degree, downlink scheduling group number, downlink terminal group identifier 1, ... downlink terminal group identifier m, uplink scheduling group number, uplink terminal group identifier 1, ..., uplink terminal group identifier n.
  • the fourth aspect the corresponding identifier of the group identifier to which the identity information to be scheduled is to be scheduled in the first information
  • a bitmap may be used to indicate the group identifier of the to-be-scheduled terminal, that is, the corresponding identifier of the group identifier to which the to-be-scheduled terminal belongs.
  • a 16-bit bitmap can represent 16 groups. A "0" on the bitmap indicates that the group of terminals is not scheduled, and a "1" indicates that the group of terminals is scheduled. The local terminal can determine whether it is possible to be scheduled according to the setting of the bitmap.
  • the local terminal A belongs to the nth group, and if the nth position bit is "1", the terminal of the nth group is scheduled, and the local terminal determines that it may be scheduled to continue receiving DCI1, otherwise Determine that you may not be scheduled, go to sleep, or receive the next DCI0 to judge again.
  • DCI0 includes: DCI length, downlink scheduling bitmap, and uplink scheduling bitmap.
  • the structure of the DCI0 still has scheduling for the randomly accessed terminal, because the random access is usually not specific to the specific Terminal, so the terminal identification associated with random access is not given in DCI0 in the above example.
  • check field in DCI0 is given in Table 1, and for the different representations of the identification information, the check field can be added to the above four aspects.
  • an entry may be added in Table 2 to Table 5, but the specific addition position of the check field is not limited.
  • the apparatus includes: a storage unit 31 and an obtaining unit 32.
  • the storage unit 31 is configured to store the first information and the second information acquired by the obtaining unit 32.
  • the obtaining unit 32 is configured to acquire, in the process of receiving the DCI, the first information that is sent by the base station, where the first information includes the identifier information of the one or more to-be-scheduled terminals, and is used to detect the identifier information of the to-be-scheduled terminal.
  • the second information is continuously obtained, where the second information includes scheduling information of the terminal to be scheduled.
  • the first information is part of information in the DCI
  • the second information is information remaining in the DCI except the first information.
  • the apparatus further includes: an information rejection unit 33, a verification unit 34, Identification determination unit 35.
  • the information rejection unit 33 is configured to refuse to receive the second information when it is detected that the identification information of the to-be-scheduled terminal acquired by the obtaining unit 32 does not include the local terminal identification information, and is also used to detect that the acquisition unit 32 has acquired When the identifier information of the scheduling terminal does not include the local terminal identifier information, the local terminal is instructed to enter a sleep state.
  • the obtaining unit 32 is further configured to: when detecting that the identifier information of the to-be-scheduled terminal does not include the local terminal identifier information, re-acquire the first information of the next period, and detect the identifier of the to-be-scheduled terminal in the first information of the next period. Whether the information contains local terminal identification information.
  • the checking unit 34 is configured to check the first information by using a check field when the first information acquired by the obtaining unit 32 includes a check field.
  • the obtaining unit 32 is further configured to: when the verification of the first information by the verification unit 33 is successful, and the detection of the identification information of the to-be-scheduled terminal includes the local terminal identification information, acquire the second information.
  • the identifier information of the to-be-scheduled terminal includes: the identifier of the to-be-scheduled terminal, the group identifier of the to-be-scheduled terminal, and the corresponding identifier of the to-be-scheduled terminal identifier, to be scheduled. Any one or several of the corresponding identifiers of the group ID to which the terminal belongs.
  • the local terminal identifier information includes any one or more of a local terminal identifier, a group identifier of the local terminal, a corresponding identifier of the local terminal identifier, and a corresponding identifier of the group identifier to which the local terminal belongs.
  • the device further includes: an identifier determining unit 35, in combination with the description of the different embodiments of the identifier information of the terminal to be scheduled and the local terminal identifier information.
  • the obtaining unit 32 is further configured to: when the identifier information of the to-be-scheduled terminal in the first information includes the local terminal identifier information, and the identifier information of the to-be-scheduled terminal is not the terminal identifier to be scheduled, acquire the second information.
  • the identifier determining unit 35 is configured to determine the to-be-scheduled terminal identifier by using the second information acquired by the obtaining unit 32, or determine the to-be-scheduled terminal identifier by using the first information and the second information.
  • another embodiment of the present invention provides another apparatus for acquiring downlink control information, which is the peer device shown in FIG. 3 and FIG. As shown in 4-1, this apparatus includes an information generating unit 411 and a transmitting unit 412.
  • the information generating unit 411 is configured to generate first information according to the identifier information of the one or more to-be-scheduled terminals, and is further configured to generate second information according to the scheduling information of the terminal to be scheduled.
  • the first information is part of information in the DCI
  • the second information is information remaining in the DCI except the first information.
  • the sending unit 412 is configured to send the first information and the second information generated by the information generating unit 411 to all terminals.
  • all terminals are all local terminals that provide services for the base station, and all the terminals include terminals to be scheduled.
  • the device further includes: a field adding unit 413.
  • the field adding unit 413 is configured to add a check field to the first information generated by the information generating unit 411.
  • the sending unit 412 is further configured to include the check word obtained by the field adding unit 413
  • the first information of the segment is sent to all terminals.
  • the identification information of the terminal to be scheduled applied to the device includes: the identifier of the terminal to be scheduled, the group identifier of the terminal to be scheduled, and the identifier of the terminal to be scheduled. ID or any one or more of the corresponding identifiers of the group IDs to which the terminal to be scheduled belongs.
  • the device shown in FIG. 4-1 and FIG. 4-2 is the opposite device of the device shown in FIG. 3 and FIG. 4, that is, only the device shown in FIG. 4-1 and FIG. 4-2 is generated.
  • the DCI sends it to the local terminal, so that the device shown in FIG. 3 and FIG. 4 receives the DCI, and then performs the subsequent process.
  • FIG. 3, FIG. 4, FIG. 4-1, and FIG. 4-2 can be used to implement the method flow shown in FIG. 1 and FIG. 2, and for the convenience of description, only For the related parts of the embodiments of the present invention, the specific technical details are not disclosed. Please refer to the related content description of the embodiments of the present invention shown in FIG. 1 and FIG. 2 . Further, in combination with the above-described method flow shown in FIGS. 1 and 2, the apparatus of the present invention as shown in FIGS. 3 and 4 is applied to a local terminal.
  • An embodiment of the present invention provides an apparatus for acquiring downlink control information, where the first information sent by the base station is obtained by the acquiring unit, and when the identifier information of the to-be-scheduled terminal in the first information includes the local terminal identifier information, the method continues to acquire.
  • the second information where the first information is part of information in the DCI, and the second information is information remaining in the DCI except the first information.
  • the technical solution provided in this embodiment only needs to acquire a part of the information in the DCI, and only when the local terminal is scheduled to be scheduled, whether the terminal is scheduled to receive all the DCIs. Continuing to obtain another part of the information of the DCI, the technical solution provided by the embodiment significantly reduces the power consumption when the terminal receives the DCI.
  • the terminal includes a memory 501 and a processor 502.
  • the memory 501 and the processor 502 are communicably connected through a bus 503.
  • the memory 501 can be a read only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (Random Access Memory, RAM).
  • the memory 501 can store an operating system and other applications.
  • the program code for implementing the technical solution provided by the embodiment of the present invention is saved in the memory 501 and executed by the processor 502.
  • the processor 502 can be a general-purpose central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits for executing related programs.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • Bus 503 can include a path for communicating information between various components of the device (e.g., memory 501, processor 502).
  • FIG. 5 only shows the memory 501, the processor 502, and the bus 503, in the specific implementation process, those skilled in the art should understand that the terminal also includes other necessary for normal operation. Device. At the same time, those skilled in the art will appreciate that hardware devices that implement other functions may also be included, depending on the particular needs.
  • the memory 501 is configured to store information including program instructions.
  • the processor 502 is coupled to the memory 501, and is configured to control the execution of the program instruction. Specifically, when the DCI is received, the first information sent by the base station is acquired, and when the identifier information of the to-be-scheduled terminal includes the local terminal identifier information, , continue to get the second information.
  • the first information includes the identifier information of any one or more to-be-scheduled terminals, and is part of the information in the DCI.
  • the second information includes scheduling information of the terminal to be scheduled, and is information remaining in the DCI except the first information.
  • the processor 502 is further configured to: when detecting that the identifier information of the to-be-scheduled terminal does not include the local terminal identifier information, rejecting the second information; and when detecting the to-be-scheduled terminal When the identification information does not include the local terminal identification information, the local terminal is instructed to enter the dormant state; and when the identification information of the to-be-scheduled terminal does not include the local terminal identification information, the first information of the next cycle is re-acquired, and is under In the first information of a period, it is detected whether the identifier information of the terminal to be scheduled includes local terminal identifier information.
  • the first information that is obtained by the processor 502 further includes a check field. After the first information is obtained, the first information is verified by using a check field. When the first information is successfully verified, and the identification information of the to-be-scheduled terminal includes the local terminal identification information, the second information is obtained.
  • the identifier information of the to-be-scheduled terminal includes: one of the to-be-scheduled terminal identifier, the group identifier of the to-be-scheduled terminal, the corresponding identifier of the to-be-scheduled terminal identifier, and the corresponding identifier of the group identifier to which the to-be-scheduled terminal belongs.
  • the local terminal identification information includes any one or more of a local terminal identifier, a group identifier of the local terminal, a corresponding identifier of the local terminal identifier, and a corresponding identifier of the group identifier to which the local terminal belongs.
  • the processor 502 is further configured to determine, by using the second information, that the identifier information of the to-be-scheduled terminal is not the to-be-scheduled terminal identifier, in combination with the foregoing description of the identifier information of the terminal to be scheduled and the local terminal identifier information.
  • the terminal identifier determines the terminal identifier to be scheduled by using the first information and the second information.
  • the base station includes: a memory 511, a processor 512, and a transceiver 513, where the memory 511.
  • the processor 512 and the transceiver 513 are communicably connected by a bus 514.
  • the memory 511 is configured to store information including program instructions.
  • the processor 512 is coupled to the memory 511 and the transceiver 513 for controlling the execution of the program instructions, and is specifically configured to generate the first information according to the identifier information of the one or more to-be-scheduled terminals, and generate the first information according to the scheduling information of the terminal to be scheduled. Two information.
  • the first information is part of information in the DCI
  • the second information is information remaining in the DCI except the first information.
  • the transceiver 513 is configured to send the first information and the second information generated by the processor 512 to all terminals.
  • All of the local terminals that serve the base station are all terminals, and the terminals include the to-be-scheduled terminal.
  • the processor 512 is further configured to add the first information. Add a checksum field.
  • the transceiver 513 is further configured to send the first information including the check field acquired by the processor 512 to all terminals.
  • the identifier information of the to-be-scheduled terminal includes: one of the to-be-scheduled terminal identifier, the group identifier of the to-be-scheduled terminal, the corresponding identifier of the to-be-scheduled terminal identifier, and the corresponding identifier of the group identifier to which the to-be-scheduled terminal belongs. .
  • a terminal provided by the embodiment of the present invention is a local terminal in the foregoing description process, and the terminal shown in FIG. 5 is combined with the base station shown in FIG. 5-1, and the foregoing FIG. 1 can be implemented.
  • the method flow shown in FIG. 2 is the same as the description of related content, and the description is not repeated here.
  • the terminal provided by the embodiment of the present invention in the process of receiving the DCI, first acquires the first information sent by the base station by using the processor, and continues to acquire when the identifier information of the to-be-scheduled terminal in the first information includes the local terminal identifier information.
  • the second information wherein the first information is part of information in the DCI, and the second information is information remaining in the DCI except the first information.
  • the technical solution provided in this embodiment only needs to acquire a part of the information in the DCI, and only when the local terminal is scheduled to be scheduled, whether the terminal is scheduled to receive all the DCIs. Continuing to obtain another part of the information of the DCI, the technical solution provided by the embodiment significantly reduces the power consumption when the terminal receives the DCI.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative, for example, the division of the modules or units is merely a logical functional division, There may be additional divisions in actual implementation, for example multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented.
  • 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 units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to 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 above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, 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 all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor 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 mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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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 appareil permettant d'acquérir des informations de commande de liaison descendante, un terminal et une station de base, qui se rapportent au domaine technique des communications de réseau, et qui réduisent le problème de consommation d'énergie élevée généré par le terminal dans le processus de réception d'informations de commande de liaison descendante (DCI) en raison du fait qu'une grande quantité d'informations inutiles est reçue. La solution spécifique est comme suit : un terminal local acquiert premièrement des premières informations envoyées par une station de base ; et lorsqu'il est détecté que des informations d'identificateur concernant un terminal à planifier dans les premières informations contiennent des informations d'identificateur concernant le terminal local, le terminal local continue à acquérir des secondes informations, les premières informations faisant partie d'informations dans des DCI, et les secondes informations étant les informations restantes dans les DCI à l'exception des premières informations. La présente invention s'applique à un flux dans lequel un terminal acquiert des DCI.
PCT/CN2015/076103 2015-04-08 2015-04-08 Procédé et appareil permettant d'acquérir des informations de commande de liaison descendante, terminal et station de base Ceased WO2016161581A1 (fr)

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EP3902334A4 (fr) * 2018-12-20 2022-02-23 Datang Mobile Communications Equipment Co., Ltd. Procédé, appareil et dispositif de traitement d'informations et support de stockage lisible par ordinateur
CN114337945A (zh) * 2020-09-28 2022-04-12 维沃移动通信有限公司 信息指示方法、装置、终端、网络设备和存储介质

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CN103491640A (zh) * 2012-06-12 2014-01-01 电信科学技术研究院 终端设备的调度方法和设备
WO2014085964A1 (fr) * 2012-12-03 2014-06-12 富士通株式会社 Procédé de transmission d'informations, procédé de détection d'informations, dispositif et système correspondants

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EP3902334A4 (fr) * 2018-12-20 2022-02-23 Datang Mobile Communications Equipment Co., Ltd. Procédé, appareil et dispositif de traitement d'informations et support de stockage lisible par ordinateur
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CN114337945A (zh) * 2020-09-28 2022-04-12 维沃移动通信有限公司 信息指示方法、装置、终端、网络设备和存储介质

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