WO2015018345A1 - Procédé de transmission d'information de système, procédé de réception, et dispositif - Google Patents

Procédé de transmission d'information de système, procédé de réception, et dispositif Download PDF

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Publication number
WO2015018345A1
WO2015018345A1 PCT/CN2014/083813 CN2014083813W WO2015018345A1 WO 2015018345 A1 WO2015018345 A1 WO 2015018345A1 CN 2014083813 W CN2014083813 W CN 2014083813W WO 2015018345 A1 WO2015018345 A1 WO 2015018345A1
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WIPO (PCT)
Prior art keywords
specific sib
sib
specific
repetition period
repeatedly
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PCT/CN2014/083813
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English (en)
Chinese (zh)
Inventor
刘建华
梁靖
邢艳萍
赵亚利
Original Assignee
电信科学技术研究院
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Publication of WO2015018345A1 publication Critical patent/WO2015018345A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information

Definitions

  • the present application claims to be submitted to the Intellectual Property Office of the People's Republic of China on August 7, 2013, and the application number is 201310341954.4, and the invention name is "a method for transmitting system information, a receiving method, The priority of the Chinese Patent Application, the entire disclosure of which is incorporated herein by reference.
  • the present invention relates to the field of wireless communication technologies, and in particular, to a method, a receiving method, and an apparatus for transmitting system information. Background technique
  • Machine-to-machine communication (M2M, English: Machine-to-machine) is a new communication concept that aims to combine many different types of communication technologies (eg machine-to-machine communication, machine control communication, human-computer interaction communication, Mobile Internet communication is an organic combination that promotes the development of social production and the improvement of lifestyle.
  • MTC Machine Type Communications
  • MTC terminals also known as MTC devices
  • MTC devices have low mobility
  • the time for data transmission between the MTC terminal and the network side is controllable, that is, the MTC terminal can only access during the time period specified by the network;
  • the data transmission performed by the MTC terminal and the network side does not require high real-time performance, that is, it has time tolerance;
  • MTC terminals are energy limited and require very low power consumption
  • MTC terminals can be managed in groups
  • An actual MTC terminal can have one or more of the above characteristics.
  • SIBs System Information Blocks
  • the number of repetitions of SIB2 may be only 8 times according to the existing mechanism. For scenes where the wireless signal is severely occluded, the MTC terminal does not combine the received downlink signals 8 times to properly demodulate SIB2.
  • An object of the present invention is to provide a method, a receiving method and a device for transmitting system information, so as to solve the problem that the MTC terminal cannot correctly acquire system information when the wireless signal is severely occluded.
  • a method for transmitting system information, in each repetition period of a specific SIB includes: repeatedly transmitting scheduling information of the specific SIB;
  • the particular SIB is repeatedly transmitted at the scheduling timing of the particular SIB.
  • a specific SIB is the SIB required for the terminal to communicate.
  • the number of repetitions in one SIB modification period is at least doubled compared with the prior art, thereby satisfying the demodulation requirement of the terminal and improving system performance.
  • the length of the repetition period of the specific SIB may be the minimum repetition period notified in the SIB 1, or may be the maximum repetition period notified in the SIB1, or may be the protocol agreement or other repetition period length determined by the network side ( For example, it may be a repetition period of the configuration of the specific SIB in the prior art).
  • SIB Multicast Broadcast Single Frequency Network
  • MBSFN Multiple Broadcast Single Frequency Network
  • TDD Time Division Duplex
  • the specific SIB is repeatedly transmitted at the scheduling timing of the specific SIB based on a scheduling occasion, and may be implemented by repeatedly transmitting the specific SIB in consecutive M radio frames of a repetition period of a specific SIB.
  • the specific SIB is repeatedly sent, and the implementation may be: sending all or part of the subframes of consecutive M radio frames of the repetition period of the specific SIB. This particular SIB.
  • the initial radio frame of the consecutive M radio frames is adjacent to the last radio frame of the other SIBs in the repetition period of the specific SIB; or, the continuous M radio frames are The last M radio frames of the repetition period.
  • the specific SIB is repeatedly sent at the scheduling timing of the specific SIB according to another scheduling occasion.
  • the implementation manner may be: selecting a sending timing pattern from a pre-agreed transmission timing pattern of the specific SIB, and sending the specific
  • the transmission timing pattern of the SIB specifies the relative position of the radio frame transmitting the specific SIB in the repetition period of the specific SIB, or the transmission timing pattern for transmitting the specific SIB specifies that the subframe in which the specific SIB is transmitted is in the radio frame.
  • the number in the cell and the relative position of the radio frame in the repetition period of the specific SIB; the specific SIB is repeatedly transmitted according to the selected transmission timing pattern.
  • the method provided by the embodiment of the present invention further includes: carrying the selection result of the transmission timing pattern in the SIB1 and transmitting the result to the terminal.
  • the scheduling information of the specific SIB is repeatedly sent, and the implementation may be: sending a physical downlink control for scheduling the specific SIB on a subframe in which the specific SIB is sent.
  • the downlink downlink control information (Downlink Control Information, DCI) carried by each PDCCH is the same.
  • a method for receiving system information, in each repetition period of a specific SIB includes: repeatedly receiving scheduling information of the specific SIB, where the specific SIB is an SIB required for communication by the terminal; After acquiring the scheduling information of the specific SIB, the downlink signal is repeatedly received at the scheduling timing of the specific SIB, to acquire the specific SIB according to the received downlink signal, within the modification period of the specific SIB.
  • the terminal can repeatedly receive the downlink signal at the scheduling timing of the specific SIB within one repetition period, if the number of repetitions is sufficient, the downlink signal received in one repetition period can be combined to correctly demodulate the specific SIB. Even if the specific SIB cannot be correctly demodulated in one repetition period, since the specific SIB is repeatedly transmitted in the repetition period, the number of repetitions in one SIB modification period is at least doubled compared with the prior art, thereby being able to satisfy Terminal demodulation requirements, improve systemicity]
  • the downlink signal is repeatedly received at the scheduling timing of the specific SIB according to a scheduling occasion.
  • the actual manner may be: repeatedly receiving the downlink signal in consecutive M radio frames of a repetition period of a specific SIB.
  • the downlink signal is repeatedly received in consecutive M radio frames of a repetition period of a specific SIB, and the implementation may be: all or part of subframes of consecutive M radio frames of a repetition period of a specific SIB, Receiving the downlink signal.
  • the starting radio frame of consecutive M radio frames is adjacent to the last radio frame of other SIBs in the repetition period of the specific SIB; or, the continuous M radio frames are the last of the repetition period. M radio frames.
  • the receiving method provided by the embodiment of the present invention may further include: obtaining, from the received SIB1, a selection result of sending a transmission timing pattern of the specific SIB, and sending, according to another scheduling occasion,
  • the transmission timing pattern of the specific SIB specifies a relative position of a radio frame in which the specific SIB is transmitted in a repetition period of a specific SIB, or a transmission timing pattern in which the specific SIB is transmitted specifies a subframe in which the specific SIB is transmitted.
  • the downlink signal is repeatedly received at the scheduling timing of the specific SIB, and the implementation may be: determining, by using a predetermined transmission timing pattern of the specific SIB, a transmission timing pattern indicated by the selection result; The transmission timing pattern repeatedly receives the downlink signal.
  • the scheduling information of the specific SIB is repeatedly received, which may be implemented by: receiving, on a subframe receiving the downlink signal, a physical downlink for scheduling the specific SIB.
  • the channel PDCCH is controlled, and the DCI carried by each PDCCH is the same.
  • the embodiment of the present invention further provides a base station, including: a scheduling information sending module, configured to repeatedly send scheduling information of the specific SIB in each repetition period of a specific SIB;
  • the SIB sending module is configured to repeatedly send the specific SIB at a scheduling timing of the specific SIB in each repetition period of the specific SIB, where the specific SIB is an SIB required for the terminal to communicate.
  • the number of repetitions in one SIB modification period is at least doubled compared with the prior art, thereby satisfying the demodulation requirement of the terminal and improving system performance.
  • the SIB sending module may be specifically configured to:
  • the specific SIB is repeatedly transmitted in consecutive M radio frames of each repetition period of a specific SIB.
  • the SIB sending module is specifically configured to:
  • the particular SIB is transmitted on all or a portion of the subframes of consecutive M radio frames for each repetition period of a particular SIB.
  • the initial radio frame of the consecutive M radio frames is adjacent to the last radio frame that schedules other SIBs in each repetition period of the specific SIB; or the continuous M is performed according to any implementation manner of the scheduling occasion.
  • the radio frames are the last M radio frames of the repetition period.
  • the SIB sending module may be specifically configured to:
  • Selecting a transmission timing pattern from a predetermined transmission timing pattern for transmitting the specific SIB, and transmitting a transmission timing pattern of the specific SIB specifies a relative position of a radio frame transmitting the specific SIB in a repetition period of a specific SIB, Or transmitting a transmission timing pattern of the specific SIB, where a number of a subframe in which the specific SIB is transmitted in a radio frame and a relative position of the radio frame in a repetition period of a specific SIB are specified;
  • the scheduling information sending module is specifically configured to: send, in each repetition period of the specific SIB, a physics for scheduling the specific SIB on a subframe in which the specific SIB is sent.
  • the downlink control channel PDCCH, and the DCI carried by each PDCCH is the same.
  • the embodiment of the present invention further provides a terminal, including: a scheduling information receiving module, configured to repeatedly receive scheduling information of the specific SIB in each repetition period of a specific SIB, where the specific The SIB is the SIB required for the terminal to communicate;
  • the SIB receiving module After receiving the scheduling information of the specific SIB, the SIB receiving module repeatedly receives the downlink signal at the scheduling timing of the specific SIB in each repetition period of the specific SIB, to acquire the specific according to the received downlink signal. SIB.
  • the terminal can repeatedly receive the downlink signal at the scheduling timing of the specific SIB within one repetition period, if the number of repetitions is sufficient, the downlink signal received in one repetition period can be combined to correctly demodulate the specific SIB. Even if the specific SIB cannot be correctly demodulated in one repetition period, since the specific SIB is repeatedly transmitted in the repetition period, the number of repetitions in one SIB modification period is at least doubled compared with the prior art, thereby being able to satisfy Terminal demodulation requirements, improve systemic
  • the SIB receiving module may be specifically configured to:
  • the downlink signals are repeatedly received in consecutive M radio frames of each repetition period of a specific SIB.
  • the SIB receiving module is specifically configured to:
  • the downlink signal is received on all or a portion of subframes of consecutive M radio frames for each repetition period of a particular SIB.
  • the initial radio frame of the consecutive M radio frames is adjacent to the last radio frame that schedules other SIBs in each repetition period of the specific SIB, according to any of the foregoing scheduling occasions; or, the continuous M The radio frames are the last M radio frames of the repetition period.
  • the SIB receiving module may be specifically configured to:
  • the transmission timing pattern for transmitting the specific SIB specifies the relative position of the radio frame transmitting the specific SIB in the repetition period of the specific SIB, or the transmission timing pattern specification for transmitting the specific SIB The number of the subframe in which the specific SIB is transmitted in the radio frame and the relative position of the radio frame in the repetition period of the specific SIB;
  • the downlink signal is repeatedly received in accordance with the determined transmission timing pattern during each repetition period of the specific SIB.
  • the scheduling information receiving module is configured to: receive, during each repetition period of the specific SIB, a physical downlink for scheduling the specific SIB in a subframe that receives the downlink signal, in each of the repetition periods of the specific SIB.
  • the channel PDCCH is controlled, and the DCI carried by each PDCCH is the same.
  • the embodiment of the present invention further provides another base station, including: a processor and a radio frequency unit, where the processor is configured to send the specific SIB by using a radio frequency unit in each repetition period of the specific SIB. Dispatching information, and repeatedly transmitting, by the radio unit, the specific SIB at a scheduling occasion of the specific SIB, where the specific SIB is an SIB required for communication by the terminal.
  • the number of repetitions in one SIB modification period is at least doubled compared with the prior art, thereby satisfying the demodulation requirement of the terminal and improving system performance.
  • the embodiment of the present invention further provides a terminal, including: a processor and a radio frequency unit, where the processor is configured to receive the specific SIB by using a radio frequency unit in each repetition period of the specific SIB.
  • Scheduling information the specific SIB is an SIB required for the terminal to communicate; after acquiring the scheduling information of the specific SIB, repeatedly receiving the scheduling timing of the specific SIB by the radio frequency unit in each repetition period of the specific SIB And a downlink signal to acquire the specific SIB according to the received downlink signal.
  • the embodiment of the present invention further provides a base station, including: Processor, memory, transceiver;
  • the memory is configured to store one or more executable programs used to configure the processor; the processor is configured with one or more executable programs, and the one or more executable programs are configured Performing the following method: for repeatedly transmitting scheduling information of the specific SIB in each repetition period of a specific system information block SIB; repeatedly transmitting at a scheduling timing of the specific SIB in each repetition period of the specific SIB
  • the specific SIB, the SIB required for the communication of the terminal is based on the same invention concept as the method, and the embodiment of the present invention further provides a terminal, including: a processor, a memory, and a transceiver;
  • the memory is configured to store one or more executable programs used to configure the processor; the processor is configured with one or more executable programs, and the one or more executable programs are configured And performing the following method: for receiving, in each repetition period of the specific system information block SIB, scheduling information of the specific SIB, where the specific SIB is an SIB required for communication by the terminal; and acquiring the specific SIB After the scheduling information, the downlink signal is repeatedly received at the scheduling timing of the specific SIB in each system information repetition period of the specific SIB, to acquire the specific SIB according to the received downlink signal.
  • the terminal can repeatedly receive the downlink signal at the scheduling timing of the specific SIB within one repetition period, if the number of repetitions is sufficient, the downlink signal received in one repetition period can be combined to correctly demodulate the specific SIB. Even if the specific SIB cannot be correctly demodulated in one repetition period, since the specific SIB is repeatedly transmitted in the repetition period, the number of repetitions in one SIB modification period is at least doubled compared with the prior art, thereby being able to satisfy The demodulation requirements of the terminal and the improvement of systemicity f] are not described here.
  • FIG. 1 is a flowchart of a sending method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a first scheduling opportunity according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a second scheduling opportunity according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of a third scheduling opportunity according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a receiving method according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of another base station according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of another terminal provided in an embodiment of the present invention. detailed description
  • the embodiment of the present invention provides a system for sending and receiving system information, so that the terminal can correctly acquire information.
  • the network side is in each repetition period of the specific SIB: repeatedly scheduling the specific SIB, and repeatedly transmitting the specific SIB at the scheduling timing of the specific SIB;
  • the terminal is in each repetition period of the specific SIB: repeatedly receiving the The scheduling information of the specific SIB, and after acquiring the scheduling information, repeatedly receives the downlink signal at the scheduling timing of the specific SIB.
  • the SIB is transmitted only once in a repetition period of the SIB, where the SIB does not include SIB1, and may be, for example, SIB2.
  • the terminal needs to combine the downlink signals received in multiple repetition periods to demodulate the acquired system information. Obviously, the number of repetitions in one SIB modification period is not sufficient to support the demodulation requirements at the terminal.
  • the network side repeatedly transmits a specific SIB in a repetition period of a specific SIB; correspondingly, the terminal may repeatedly receive the downlink signal in a scheduling occasion of a specific SIB within one repetition period of the specific SIB, and may merge if the number of repetitions is sufficient
  • the downlink signal received during a repetition period is used to correctly demodulate the specific SIB. Even if the specific SIB cannot be correctly demodulated in one repetition period, since the specific SIB is repeatedly transmitted in the repetition period, the number of repetitions in one SIB modification period is at least doubled compared with the prior art, thereby being able to satisfy Terminal demodulation requirements, improve systemic
  • SIB repetition period In the existing implementation, except for SIB1, the repetition period of other types of SIB refers to the transmission period of the SIB. Assuming that the repetition period of SIB2 is 320 ms, SIB2 is transmitted every 320 ms according to the existing implementation. In the embodiment of the present invention, the specific SIB is repeatedly transmitted within the repetition period of the specific SIB.
  • Time window of SI messages (English: SI-wmdows): In addition to SIB1, other types of SIBs need to be mapped into SI messages for transmission.
  • Each SI message is associated with a time window.
  • the time windows of different SI messages do not overlap.
  • the time window of each SI message has the same length and can be configured through SIB1.
  • SI messages are transmitted in a dynamic scheduling manner within their time window. Then, during the repetition period of the specific SIB, the radio frame of the specific SIB is repeatedly transmitted to constitute the time window of the SI message.
  • SIB modification period SIB changes occur at specific radio frames. It is assumed that on the modification period L, the network side sends a change notification of the SIB to the terminal, but in the modification period L, the current SIB is still transmitted/received, and when the next modification period L+1 arrives, the transmission/reception is changed. SIB.
  • Specific SIB refers to the SIB required for the terminal to communicate. For different communication processes or communication phases, the SIBs required by the terminals are different, then the specific SIBs are different. Specifically, which type of SIB is used as a specific SIB needs to be determined according to a specific communication scenario, and the present invention is not limited. For example, in the terminal access process, the access needs to be completed according to the cell radio configuration information carried by the SIB2 and other base station configuration information. Then, the SIB2 is a specific SIB.
  • the terminal described in the embodiment of the present invention may be an MTC terminal, and of course, may also be used.
  • User equipment UE
  • Base station The base station described in the embodiment of the present invention may be an evolved base station (eNB) in an LTE system, or may be a base station in a higher evolved version of the communication system based on the LTE system.
  • eNB evolved base station
  • a method for transmitting system information according to an embodiment of the present invention is as shown in FIG. 1.
  • the method provided by the embodiment of the present invention specifically includes the following operations:
  • Step 100 Repeat sending the scheduling information of the specific SIB.
  • the scheduling information of the specific SIB is sent, that is, the SI message having the mapping relationship to the SIB is scheduled.
  • Step 110 Repeat sending the specific SIB at the scheduling timing of the specific SIB.
  • the length of the repetition period of the specific SIB may be the minimum repetition period notified in SIB 1.
  • the length of the repetition period of a particular SIB may also be the maximum repetition period notified in SIB1.
  • the length of the repetition period of a specific SIB may also be a protocol agreement or other repetition period length determined by the network side.
  • the specific SIB is SIB2, and the length of the repetition period may be 320 ms of the current common configuration length.
  • the scheduling occasion of the specific SIB may be a continuous M radio frames in a repetition period of a specific SIB determined by a protocol pre-agreed or determined by the network side, where M is greater than 0 and less than or equal to the repetition of the specific SIB.
  • the integer of the number of cycles may also be the timing of transmitting the specific SIB specified in the transmission timing pattern (English: pattern ) of the specific SIB that is pre-agreed by the protocol (that is, the radio frame specifying the transmission of the specific SIB is in the repetition period of the specific SIB.
  • the above specific SIB is repeatedly transmitted in consecutive M radio frames of a repetition period of a specific SIB.
  • the consecutive M radio frames are time windows of SI messages that are in a mapping relationship with the specific SIM.
  • the length (M) of the time window can be pre-agreed in the protocol, or can be determined by the network side and notified to the terminal via SIB1.
  • the position of the time window in the repetition period may be pre-agreed in the protocol, or may be determined by the network side and notified to the terminal by the SIB 1.
  • the specific SIB may be sent in each subframe of the consecutive M radio frames, or may be sent on a partial subframe of the consecutive M radio frames according to a protocol convention or a network side decision. SIB.
  • SIB For the case of transmitting a specific SIB on a partial subframe, specifically, among the consecutive M radio frames, the subframe numbers for transmitting a specific SIB on each radio frame are the same. If the network side decides which subframes are used to transmit a specific SIB, the network side also needs to inform the terminal of the number of these subframes through SIB1.
  • a subframe in which a specific SIB is transmitted is not a subframe in which SIB1 and MBSFN are transmitted, and an uplink subframe and a special subframe are not used in a TDD system.
  • an implementation manner of the consecutive M radio frames in a repetition period of a specific SIB may be: a starting radio frame of the consecutive M radio frames, and a repetition period of a specific SIB.
  • the last radio frame of the other SIBs is scheduled to be adjacent.
  • another implementation manner of the consecutive M radio frames in a repetition period of a specific SIB may be: the consecutive M radio frames may be the last M radio frames of a repetition period of a specific SIB.
  • the SIB is transmitted only once within a time window of the SI message to which it is mapped.
  • the specific SIB is repeatedly transmitted in the time window of the SI message with which the mapping relationship exists.
  • the specific SIB is repeatedly transmitted in the repetition period of the specific SIB according to the timing of transmitting the specific SIB specified in the above transmission timing pattern.
  • a transmission timing pattern (as shown in FIG. 4) is selected from a pre-agreed (ie, protocol-supplied) transmission timing pattern of a specific SIB; the specific SIB is repeatedly transmitted according to the selected transmission timing pattern.
  • the specific implementation manner of selecting the transmission timing pattern is determined according to actual communication requirements. For example, the timing of transmitting the specific SIB specified by the selected transmission timing pattern needs to avoid the subframe in which the SIB 1 is transmitted. The subframe of the MBSFN is transmitted. For the TDD system, it is also necessary to avoid the uplink subframe and the special subframe.
  • the selection result of the transmission timing pattern is also carried in the SIB1 and transmitted to the terminal.
  • the result of the selection may be the specific content of the selected transmission timing pattern or the identification or number of the selected transmission timing pattern.
  • the SI message is scheduled to be transmitted by the PDCCH. Therefore, for each particular SIB, the corresponding PDCCH is also transmitted to schedule a particular SIB.
  • the specific implementation of the foregoing step 100 may be: sending, on a subframe that sends the specific SIB, a PDCCH for scheduling the specific SIB, and downlink control information carried by each PDCCH ( Downlink Control Information, referred to as: DCI) is the same. That is to say, the transmission timing of the PDCCH scheduling a specific SIB is the same as the scheduling timing of the specific SIB. Of course, the timing of transmitting the PDCCH scheduling a specific SIB may be earlier than the scheduling timing of the specific SIB.
  • DCI Downlink Control Information
  • a method for receiving system information according to an embodiment of the present invention is as shown in FIG. 5.
  • the method provided by the embodiment of the present invention specifically includes the following operations:
  • Step 500 Repeat receiving the scheduling information of the specific SIB.
  • the length of the repetition period of the specific SIB is the same as the length of the repetition period of the specific SIB transmitted by the network side.
  • Step 510 After obtaining the scheduling information of the specific SIB, repeatedly receiving the downlink signal at the scheduling timing of the specific SIB, to acquire the specific SIB according to the received downlink signal.
  • the subframes that receive the downlink signal in each repetition period have the same relative position in the repetition period during the modification period of the specific SIB.
  • the scheduling timing of the specific SIB may be consecutive M radio frames in a repetition period determined by a protocol pre-agreed or determined by the network side, or may be a transmission timing pattern for transmitting the specific SIB by a protocol pre-agreed ( English: the timing of transmitting a specific SIB specified in pattern ) (ie, specifying the relative position of the radio frame transmitting the specific SIB in the repetition period of the specific SIB, or specifying the number of the subframe in which the specific SIB is transmitted in the radio frame and the The relative position of the radio frame in the repetition period of a particular SIB).
  • a protocol pre-agreed English: the timing of transmitting a specific SIB specified in pattern
  • the downlink signal is repeatedly received in consecutive M radio frames of a repetition period of a specific SIB.
  • the M radio frames are the time window of the SI message that has a mapping relationship with the specific SIM.
  • the length (M) of the time window can be pre-agreed in the protocol or known from SIB1.
  • the location of the time window in the SI cycle can be pre-agreed in the protocol or can be learned from SIB1.
  • the terminal may receive the downlink signal in each subframe of the consecutive M radio frames.
  • the terminal may receive the downlink signal in each subframe of the consecutive M radio frames.
  • the terminal may receive the downlink signal on a partial subframe of the consecutive M radio frames.
  • the terminal may receive the downlink signal on a partial subframe of the consecutive M radio frames.
  • the subframe numbers for transmitting a specific SIB on each radio frame are the same. If the network side decides which subframes are used to transmit a specific SIB, the terminal learns the number of these subframes in SIB1.
  • the subframe in which the downlink signal is received is not the subframe in which the SIB1 and MBSFN transmissions are located, and is not the uplink subframe and the special subframe for the TDD system.
  • the subframe receiving the downlink signal is not a subframe in which the SIB1 and the MBSFN are transmitted, and is not an uplink sub-frame Frames and special subframes.
  • the specific implementation manner of the consecutive M radio frames in the SI period is the same as the network side transmitting the specific SIB.
  • the downlink signal is repeatedly received within the repetition period of the specific SIB. Then, in each repetition period of the specific SIB, the selection result of the transmission timing pattern for transmitting the specific SIB is also obtained from the received SIB1; and the selection result indication is determined from the transmission timing pattern of the pre-agreed specific SIB.
  • Send timing pattern repeatedly receive the downlink signal according to the determined transmission timing pattern.
  • the transmission timing pattern of the specific SIB reference may be made to the foregoing transmission method embodiment, and details are not described herein again. Since the SI message is scheduled to be transmitted by the PDCCH.
  • the specific implementation of the step 500 may be: receiving a PDCCH for scheduling a specific SIB on a subframe that receives the downlink signal, and the DCI carried by each PDCCH is the same. That is to say, the transmission timing of the PDCCH scheduling a specific SIB is the same as the scheduling timing of the specific SIB. Of course, the timing of scheduling the PDCCH scheduling a specific SIB may be earlier than the scheduling timing of the specific SIB.
  • the process on the network side can be described as:
  • the base station During the repetition period of each specific SIB, the base station repeatedly transmits a PDCCH for scheduling a specific SIB and repeatedly transmits a specific SIB on the last M radio frames whose system frame number (SFN) is N-M ⁇ N in the repetition period.
  • SFN system frame number
  • the base station If the length of the repetition period of a particular SIB is determined by the base station, the base station also carries the length of the repetition period of the particular SIB in SIB1.
  • the base station If the value of M is determined by the base station, the base station also carries the value of M in SIB1.
  • the process of terminal measurement can be described as:
  • the terminal During the repetition period of each specific SIB, the terminal repeatedly receives the PDCCH for scheduling a specific SIB on the last M radio frames with the system frame number N-M ⁇ N in the repetition period, and repeatedly receives the downlink signal corresponding to the specific SIB.
  • the SFN here is the relative position of the radio frame in the repetition period.
  • the terminal receives, in the M radio frames, a subframe in which the SIB1 transmission is located and each subframe except the subframe in which the MBSFN transmission is located, and receives a PDCCH scheduling a specific SIB, and the DCI of the PDCCH transmitted on the subframes is the same. .
  • the PDCCH is obtained therefrom Scheduling information for a specific SIB.
  • the PDCCH is not subsequently received.
  • the terminal After acquiring the scheduling information of the specific SIB, the terminal receives the downlink signal on the time-frequency resources indicated by the scheduling information of the specific SIB on the subframes.
  • the specific SIB is correctly demodulated by combining the received downlink signals.
  • the subsequent downlink signals are not continuously continued to be received on the time-frequency resources indicated by the scheduling information.
  • the terminal If the PDCCH is correctly demodulated first, it will happen that the terminal only needs to receive the downlink signal corresponding to the specific SIB in a certain subframe, and does not need to receive the PDCCH. Then, the terminal can receive the downlink signal on the time-frequency resource indicated by the scheduling information according to the scheduling information of the specific SIB carried in the PDCCH that is correctly demodulated.
  • the terminal If the length of the repetition period of a particular SIB is determined by the base station, the terminal also acquires the length of the repetition period of the specific SIB in SIB1.
  • the terminal If the value of M is determined by the base station, the terminal also obtains the value of M in SIB1.
  • the process on the network side can be described as:
  • the base station During the repetition period of each specific SIB, the base station repeatedly transmits the PDCCH for scheduling a specific SIB on the M radio frames with the system frame number L+l ⁇ L+M in the repetition period, and repeatedly transmits the specific SIB.
  • the other SIBs in the repetition period end the scheduling in the radio frame with the system frame number L.
  • the SFN here is the relative position of the radio frame in the repetition period.
  • the base station If the length of the repetition period of a particular SIB is determined by the base station, the base station also carries the length of the repetition period of the particular SIB in SIB1.
  • the base station If the value of M is determined by the base station, the base station also carries the value of M in SIB1.
  • the process of terminal measurement can be described as:
  • the terminal During the repetition period of each specific SIB, the terminal repeatedly receives the PDCCH for scheduling a specific SIB on the M radio frames with the system frame number L+1 ⁇ L+M in the repetition period, and repeatedly receives the corresponding SIB corresponding to the SIB. Downstream signal.
  • the SFN here is the relative position of the radio frame in the repetition period.
  • the terminal receives, in the M radio frames, a subframe in which the SIB1 transmission is located and each subframe except the subframe in which the MBSFN transmission is located, and receives a PDCCH scheduling a specific SIB, and the DCI of the PDCCH transmitted on the subframes is the same. .
  • scheduling information of a specific SIB is obtained therefrom.
  • the PDCCH is correctly demodulated by combining the signals received on the partial subframes, the PDCCH is not subsequently received.
  • the terminal After acquiring the scheduling information of the specific SIB, the terminal receives the downlink signal on the time-frequency resources indicated by the scheduling information of the specific SIB on the subframes.
  • the specific SIB is correctly demodulated by combining the received downlink signals.
  • the subsequent downlink signals are not continuously continued to be received on the time-frequency resources indicated by the scheduling information.
  • the terminal If the PDCCH is correctly demodulated first, it will happen that the terminal only needs to receive the downlink signal corresponding to the specific SIB in a certain subframe, and does not need to receive the PDCCH. Then, the terminal can receive the downlink signal on the time-frequency resource indicated by the scheduling information according to the scheduling information of the specific SIB carried in the PDCCH that is correctly demodulated.
  • the terminal If the length of the SI period corresponding to a particular SIB is determined by the base station, the terminal also acquires the length of the repetition period of the specific SIB in SIB1.
  • the terminal If the value of M is determined by the base station, the terminal also obtains the value of M in SIB1.
  • the protocol pre-arranges a plurality of transmission timing patterns for transmitting a specific SIB, where the transmission timing pattern specifies a relative position of a radio frame transmitting a specific SIB in a repetition period of a specific SIB, and may also specify a sub-transmission of a specific SIB.
  • a subframe in which a specific SIB is transmitted is also not an uplink subframe and a special subframe.
  • the process on the network side can be described as:
  • the base station selects a transmission timing pattern from the transmission timing pattern of the specific SIB transmitted by the protocol (as shown in FIG. 4).
  • the PDCCH for scheduling a specific SIB is transmitted on the radio frame of the system frame number 2, 4, 6, and 7 in each repetition period of the specific SIB, and the specific SIB is transmitted.
  • the selected transmission timing pattern specifies only the wireless frame number for transmitting a specific SIB in the SI cycle. Then, in the radio frame with the system frame number of 2, 4, 6, and 7, the base station has the same DCI of the PDCCH transmitted on the subframes in which the SIB1 transmission is located, and on these subframes, on the time-frequency resource scheduled by the PDCCH. Send a specific SIB.
  • a subframe in which a specific SIB is transmitted is also not an uplink subframe or a special subframe.
  • the base station sends a PDCCH scheduling a specific SIB on the subframe specified in the radio frame of the system frame number 2, 4, 6, and 7.
  • the DCI of the PDCCH transmitted on the subframes is the same, and on the subframes, in the PDCCH.
  • a specific SIB is sent on the scheduled time-frequency resource.
  • the specific implementation manner of selecting the transmission timing pattern is determined according to the actual communication requirement. For example, the timing of transmitting the specific SIB specified by the selected transmission timing pattern needs to avoid the subframe in which the SIB 1 is transmitted and the subframe in which the MBSFN is transmitted. For TDD systems, it is also necessary to avoid uplink subframes and special subframes.
  • the base station in each repetition period of the specific SIB, the base station also carries the selection result of the transmission timing pattern in the SIB1 and transmits it to the terminal.
  • the selection result may be the specific content of the selected transmission timing pattern, or the identification or number of the selected transmission timing pattern.
  • the base station If the length of the repetition period of a particular SIB is determined by the base station, the base station also carries the length of the SI period corresponding to the particular SIB in SIB1.
  • the process of terminal measurement can be described as:
  • the terminal acquires the selection result of the transmission timing of transmitting the SIB from the received SIB1 in each repetition period of the specific SIB.
  • the transmission timing pattern of the selection result indication is determined from the transmission timing pattern of the specific SIB transmitted by the protocol (as shown in FIG. 4).
  • a PDCCH for scheduling a specific SIB is received on a radio frame of system frame numbers 2, 4, 6, and 7, and the above specific SIB is received.
  • the terminal receives the PDCCH scheduling the specific SIB, and transmits the subframes in the subframes except the subframe where the SIB1 transmission is located and the subframe where the MBSFN transmission is located.
  • the DCI of the PDCCH is the same.
  • the scheduling information of the specific SIB is obtained therefrom.
  • the PDCCH is correctly demodulated by combining the signals received on the partial subframes, the PDCCH is not subsequently received.
  • the terminal After acquiring the scheduling information of the specific SIB, the terminal receives the downlink signal on the time-frequency resources indicated by the scheduling information of the specific SIB on the subframes.
  • the specific SIB is correctly decoded by combining the received downlink signals.
  • the specific SIB is correctly demodulated by combining the signals received on the partial subframes, the subsequent downlink signals are not continuously continued to be received on the time-frequency resources indicated by the scheduling information.
  • a subframe in which a specific SIB is transmitted is not an uplink subframe or a special subframe.
  • the base station receives the PDCCH scheduling the specific SIB in the subframe specified in the radio frame of the system frame number 2, 4, 6, and 7, and the DCI of the PDCCH transmitted on the subframes is the same.
  • the scheduling information of the specific SIB is obtained therefrom.
  • the PDCCH is correctly demodulated by combining the signals received on the partial subframes, the PDCCH is not subsequently received.
  • the terminal After acquiring the scheduling information of the specific SIB, the terminal receives the downlink signal on the time-frequency resources indicated by the scheduling information of the specific SIB on the subframes.
  • the specific SIB is correctly demodulated by combining the received downlink signals.
  • the subsequent downlink signals are not continuously continued to be received on the time-frequency resources indicated by the scheduling information.
  • the terminal If the length of the repetition period of a specific SIB is determined by the base station, the terminal also obtains special from SIB1. The length of the repeat period of the SIB.
  • the embodiment of the present invention further provides a base station, including:
  • the scheduling information sending module 601 is configured to repeatedly send scheduling information of the specific SIB in each repetition period of the specific SIB;
  • the SIB sending module 602 is configured to repeatedly send the specific SIB at a scheduling occasion of the specific SIB in each repetition period of the specific SIB, where the specific SIB is an SIB required for the terminal to communicate.
  • the number of repetitions in one SIB modification period is at least doubled compared with the prior art, thereby satisfying the demodulation requirement of the terminal and improving system performance.
  • the SIB sending module 602 can be specifically configured to:
  • the specific SIB is repeatedly transmitted in consecutive M radio frames of each repetition period of a specific SIB.
  • the SIB sending module 602 is specifically configured to:
  • the particular SIB is transmitted on all or a portion of the subframes of consecutive M radio frames for each repetition period of a particular SIB.
  • the subframe in which the specific SIB is transmitted is not the subframe in which SIB1 and the multicast/multicast single-frequency network MBSFN transmission are located.
  • a subframe in which a specific SIB is transmitted is not an uplink subframe or a special subframe.
  • the initial radio frame of the consecutive M radio frames is adjacent to the last radio frame that schedules other SIBs in each repetition period of the specific SIB; or the continuous M is performed according to any implementation manner of the scheduling occasion.
  • the radio frames are the last M radio frames of the repetition period.
  • the SIB sending module 602 may be specifically configured to:
  • Selecting a transmission timing pattern from a predetermined transmission timing pattern for transmitting the specific SIB, and transmitting a transmission timing pattern of the specific SIB specifies a relative position of a radio frame transmitting the specific SIB in a repetition period of a specific SIB, Or transmitting a transmission timing pattern of the specific SIB, where a number of a subframe in which the specific SIB is transmitted in a radio frame and a relative position of the radio frame in a repetition period of a specific SIB are specified;
  • the selection result of the transmission timing pattern is carried in the SIB1 and transmitted to the terminal in each repetition period corresponding to the specific SIB.
  • the scheduling information sending module 601 is configured to: send, during each repetition period of the specific SIB, a subframe for scheduling the specific SIB in a subframe that sends the specific SIB.
  • the physical downlink control channel PDCCH, and the DCI carried by each PDCCH is the same.
  • the embodiment of the present invention further provides a terminal, including:
  • the scheduling information receiving module 701 is configured to repeatedly receive scheduling information of the specific SIB in each repetition period of the specific SIB, where the specific SIB is an SIB required for the terminal to perform communication;
  • the SIB receiving module 702 After receiving the scheduling information of the specific SIB, the SIB receiving module 702 repeatedly receives the downlink signal at the scheduling timing of the specific SIB in each repetition period of the specific SIB, to acquire the downlink signal according to the received downlink signal.
  • the terminal can repeatedly receive the downlink signal at the scheduling timing of the specific SIB within one repetition period, if the number of repetitions is sufficient, the downlink signal received in one repetition period can be combined to correctly demodulate the specific SIB. Even if the specific SIB cannot be correctly demodulated in one repetition period, since the specific SIB is repeatedly transmitted in the repetition period, the number of repetitions in one SIB modification period is at least doubled compared with the prior art, thereby being able to satisfy The demodulation requirement of the terminal is improved.
  • the system is based on a scheduling occasion.
  • the SIB receiving module 702 can be specifically configured to:
  • the downlink signals are repeatedly received in consecutive M radio frames of each repetition period of a specific SIB.
  • the SIB receiving module 702 is specifically configured to:
  • the downlink signal is received on all or a portion of subframes of consecutive M radio frames for each repetition period of a particular SIB.
  • the subframe in which the downlink signal is received is not the subframe in which the SIB1 and the multicast/multicast single-frequency network MBSFN are transmitted.
  • a subframe that receives the above downlink signal is also not a downlink subframe or a special subframe.
  • the starting radio frame of the consecutive M radio frames, and The last radio frame of the other SIBs is scheduled to be adjacent in each repetition period of the specific SIB; or, the consecutive M radio frames are the last M radio frames of the repetition period.
  • the SIB receiving module 702 may be specifically configured to:
  • the downlink signal is repeatedly received in accordance with the determined transmission timing pattern during each repetition period of the specific SIB.
  • the scheduling information receiving module 701 is configured to: receive, in each repetition period of the specific SIB, a physics for scheduling the specific SIB in a subframe that receives the downlink signal, based on any of the foregoing terminal side embodiments.
  • the downlink control channel PDCCH, and the DCI carried by each PDCCH is the same.
  • the embodiment of the present invention further provides another base station, including: a processor and a radio frequency unit, where the processor is configured to repeatedly send the specific component by using a radio frequency unit in each repetition period of the specific SIB. Scheduling information of the SIB, and repeatedly transmitting, by the radio unit, the specific SIB at a scheduling occasion of the specific SIB, where the specific SIB is an SIB required for communication by the terminal.
  • the number of repetitions in one SIB modification period is at least doubled compared with the prior art, thereby satisfying the demodulation requirement of the terminal and improving system performance.
  • the embodiment of the present invention further provides a terminal, including: a processor and a radio frequency unit, where the processor is configured to repeatedly receive the specific SIB by using a radio frequency unit in each repetition period of the specific SIB.
  • Scheduling information the specific SIB is a communication station for the terminal
  • the downlink signal is repeatedly received by the radio frequency unit in the scheduling timing of the specific SIB in each repetition period of the specific SIB, to acquire the downlink signal according to the received downlink signal. Describe a specific SIB.
  • another base station provided by the embodiment of the present invention includes: a processor 801, a memory 802, and a transceiver 803;
  • the memory 802 is configured to store one or more executable programs, which are used to configure the processor;
  • the transceiver 803 may include a baseband processing component, a radio frequency processing component, and the like according to actual needs, for transmitting related information.
  • the processor 801 is configured with one or more executable programs, and the one or more executable programs are configured to perform the following methods: for repeatedly transmitting in each repetition period of a specific system information block SIB Scheduling information of a specific SIB; the specific SIB is repeatedly transmitted at a scheduling occasion of the specific SIB in each repetition period of the specific SIB, where the specific SIB is an SIB required for communication by the terminal.
  • the processor 801 is specifically configured to:
  • the specific SIB is repeatedly transmitted in consecutive M radio frames of each repetition period of a specific SIB, where M is an integer greater than 0 and less than or equal to the number of repetition periods of the specific SIB.
  • the processor 801 is specifically configured to:
  • the particular SIB is transmitted on all or a portion of the subframes of consecutive M radio frames for each repetition period of a particular SIB.
  • the starting radio frame of the consecutive M radio frames is adjacent to the last radio frame that schedules other SIBs in each repetition period of the specific SIB;
  • the consecutive M radio frames are the last M radio frames of the repetition period.
  • the processor 801 is specifically configured to:
  • Selecting a transmission timing pattern from a pre-agreed transmission timing pattern for transmitting the specific SIB, and transmitting a transmission timing pattern of the specific SIB specifies a relative of a radio frame transmitting the specific SIB in a repetition period of the specific SIB Location, or, sending a transmission timing diagram of the specific SIB The number of the subframe in which the specific SIB is transmitted in the radio frame and the relative position of the radio frame in the repetition period of the specific SIB are specified;
  • the selection result of the transmission timing pattern is carried in the SIB1 and sent to the terminal in each repetition period of the specific SIB.
  • the processor 801 is specifically configured to:
  • a physical downlink control channel PDCCH for scheduling the specific SIB is transmitted on a subframe in which the specific SIB is transmitted, and a downlink control channel DCI carried by each PDCCH is the same.
  • another terminal provided by the embodiment of the present invention includes: a processor 901, a memory 902, and a transceiver 903;
  • the memory 902 is configured to store one or more executable programs, and is used to configure the processor;
  • the transceiver 903 may include a baseband processing component, a radio frequency processing component, and the like according to actual needs, for transmitting related information.
  • the processor 901 is configured with one or more executable programs, and the one or more executable programs are configured to perform the following methods: for repeatedly receiving the receiving station in each repetition period of the specific system information block SIB The scheduling information of the specific SIB, where the specific SIB is the SIB required for the terminal to communicate; after acquiring the scheduling information of the specific SIB, in each system information repetition period of the specific SIB, in the specific SIB The scheduling occasion repeatedly receives the downlink signal to acquire the specific SIB according to the received downlink signal.
  • the processor 901 is specifically configured to:
  • the downlink signal is repeatedly received in consecutive M radio frames of each repetition period of a specific SIB, where M is an integer greater than 0 and less than or equal to the number of repetition periods of the specific SIB.
  • the processor 901 is specifically configured to:
  • the starting radio frame of the consecutive M radio frames is adjacent to the last radio frame that schedules other SIBs in each repetition period of the specific SIB;
  • the consecutive M radio frames are the last M radio frames of the repetition period.
  • the processor 901 is specifically configured to:
  • the downlink signal is repeatedly received in accordance with the determined transmission timing pattern during each repetition period of the specific SIB.
  • the processor 901 is specifically configured to:
  • a physical downlink control channel PDCCH for scheduling the specific SIB is received on a subframe that receives the downlink signal, and downlink control information DCI carried by each PDCCH is the same.
  • the terminal can repeatedly receive the downlink signal at the scheduling timing of the specific SIB within one repetition period, if the number of repetitions is sufficient, the downlink signal received in one repetition period can be combined to correctly demodulate the specific SIB. Even if the specific SIB cannot be correctly demodulated in one repetition period, since the specific SIB is repeatedly transmitted in the repetition period, the number of repetitions in one SIB modification period is at least doubled compared with the prior art, thereby being able to satisfy Terminal demodulation requirements, improve systemic
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention may be employed in one or more A computer program product embodied on a computer usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • a computer usable storage medium including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

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

Abstract

La présente invention concerne un procédé de transmission d'information de système, un procédé de réception, et un dispositif. Le procédé comprend les étapes suivantes : une information d'ordonnancement d'un bloc d'information de système (SIB) spécifique est transmise par une station de base lors de chaque cycle de répétition du bloc SIB spécifique ; le bloc SIB spécifique est transmis itérativement à des opportunités d'ordonnancement pour le bloc SIB spécifique lors de chaque cycle de répétition du bloc SIB spécifique ; l'information d'ordonnancement du bloc SIB spécifique est reçue par le terminal lors de chaque cycle de répétition du bloc SIB spécifique ; et, lorsque l'information d'ordonnancement du bloc SIB spécifique est acquise, un signal de liaison descendante est reçue itérativement à des opportunités d'ordonnancement pour le bloc SIB spécifique lors de chaque cycle de répétition du bloc SIB spécifique, permettant ainsi l'acquisition du bloc SIB spécifique sur la base du signal de liaison descendante reçu. Étant donné qu'un bloc SIB spécifique est transmis itérativement par un côté réseau lors d'un cycle de répétition, la fréquence des répétitions lors d'un cycle de modification de bloc SIB est au moins doublée en comparaison avec l'art antérieur, permettant ainsi de satisfaire des demandes de démodulation d'un terminal et d'accroître la performance du système.
PCT/CN2014/083813 2013-08-07 2014-08-06 Procédé de transmission d'information de système, procédé de réception, et dispositif WO2015018345A1 (fr)

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