WO2017113901A1 - Procédé et dispositif d'émission d'informations - Google Patents

Procédé et dispositif d'émission d'informations Download PDF

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Publication number
WO2017113901A1
WO2017113901A1 PCT/CN2016/099944 CN2016099944W WO2017113901A1 WO 2017113901 A1 WO2017113901 A1 WO 2017113901A1 CN 2016099944 W CN2016099944 W CN 2016099944W WO 2017113901 A1 WO2017113901 A1 WO 2017113901A1
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WIPO (PCT)
Prior art keywords
information
transmission
window
available subframes
transmission window
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PCT/CN2016/099944
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English (en)
Chinese (zh)
Inventor
陈宪明
戴博
方惠英
夏树强
石靖
刘锟
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from CN201610012555.7A external-priority patent/CN106921468B/zh
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP16880694.1A priority Critical patent/EP3399678B1/fr
Priority to KR1020187021812A priority patent/KR102240324B1/ko
Priority to JP2018552103A priority patent/JP6829266B2/ja
Priority to US16/065,973 priority patent/US10721013B2/en
Publication of WO2017113901A1 publication Critical patent/WO2017113901A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information

Definitions

  • the present invention relates to a Cellular Internet Of Things (C-IOT) technology, and more particularly to an information transmission method and apparatus.
  • C-IOT Cellular Internet Of Things
  • NB-IOT Narrowband-Cellular Internet Of Things
  • 3GPP 3rd Generation Partnership Project
  • the main research objectives include: improved indoor coverage, support for massive low-throughput user equipment, low latency sensitivity, and ultra-low Equipment cost, low equipment power loss and network architecture.
  • the uplink and downlink transmission bandwidth of the NB-IOT system is 180 kHz, which is the same as the bandwidth of a physical resource block (PRB) of the Long Term Evolution (LTE) system, which is beneficial for reuse in the NB-IOT system.
  • PRB physical resource block
  • LTE Long Term Evolution
  • the NB-IOT system supports three different modes of operation: 1) Stand-alone operation, such as using the currently enhanced data rate GSM EDGE Radio Access Network (GERAN) system. Spectrum to replace one or more GSM carriers; 2) Guard band operation, such as utilizing unused resource blocks within an LTE carrier guard band; 3) In-band operation For example, resource blocks in a normal LTE carrier range are utilized.
  • Stand-alone operation such as using the currently enhanced data rate GSM EDGE Radio Access Network (GERAN) system.
  • GSM EDGE Radio Access Network (GERAN) system Spectrum to replace one or more GSM carriers
  • Guard band operation such as utilizing unused resource blocks within an LTE carrier guard band
  • In-band operation For example, resource blocks in a normal LTE carrier range are utilized.
  • a first system information broadcast (SIB1) message is used to carry necessary system information.
  • the SIB1 message is transmitted in subframe 5 of each even radio frame, and the related channel coding or rate matching process depends on the single subframe, that is, the PRB allocated for the SIB1 message in each subframe 5.
  • the number of PRBs allocated for the SIB1 message can be dynamically adjusted according to the transport block size (TBS, Transport Block Size) of the SIB1 message to obtain a suitable coding rate, so in this case, based on the single subframe Channel coding or rate matching is possible.
  • TBS Transport Block Size
  • the bandwidth of the NB-IOT system is only 180 kHz, it is only equivalent to one PRB resource of the LTE system, that is, the number of PRBs allocated for the NB-IOT SIB1 message can be at most one, so that according to the existing If the SIB1 is sent, the number of allocated PRBs can no longer be dynamically adjusted according to the TBS of the NB-IOT SIB1 message. In this case, if the TBS of the NB-IOT SIB1 message exceeds a certain threshold, if it is still based on The channel coding or rate matching of a single subframe will undoubtedly severely limit the transmission performance of the NB-IOT SIB1 message.
  • Embodiments of the present invention provide an information transmission method and apparatus, which are applicable to system information transmission of an NB-IOT system and ensure transmission performance of system information.
  • an embodiment of the present invention provides an information transmission method, including:
  • one scheduling window includes K transmission windows, one transmission window includes P available subframes, K is an integer greater than 0, and P is an integer greater than one;
  • the information is transmitted using the available subframes in the transmission window.
  • one of the scheduling windows includes: N1 physical broadcast channel PBCH scheduling periods; or, N2 PBCH sub-block periods;
  • One of the transmission windows includes: half or M PBCH sub-block periods; or, across consecutive P available subframes;
  • N1, N2 and M are integers greater than 0;
  • Each PBCH scheduling period includes at least one PBCH sub-block period.
  • the transmitting the information by using the available subframes in the transmission window includes:
  • L is an integer greater than 0 and less than or equal to K
  • Q is an integer greater than one.
  • any one of the available subframes belongs to a set of remaining subframes other than the subframes in which the primary synchronization/secondary synchronization PSS/SSS and PBCH are transmitted in the specified subframe set.
  • the specified subframe set is a subframe set consisting of subframes with all subframe numbers 0, 4, 5, and 9;
  • the specified subframe set is a subframe set consisting of subframes with all subframe numbers 0, 1, 5, and 6; or, all subframe numbers are 1 and 6.
  • the transmitting the information on the obtained Q available subframes includes:
  • channel coded data of the information according to the number of available subframes Q for transmitting information within the transmission window, or according to the number of available subframes Q and the number of transmission windows in which information is transmitted within the transmission window; the channel to be obtained
  • the encoded data is mapped onto the Q available subframes and transmitted.
  • the obtaining the channel coded data of the information according to the number of available subframes Q and the number of the transmission window for transmitting information in the transmission window including:
  • the number of channel coded data of the information is obtained according to the number of available subframes Q for transmitting information in the transmission window, and the redundancy version RV of the channel coded data of the information is obtained according to the number of the transmission window.
  • the acquiring the L transmission windows for transmitting the information includes:
  • the location of the L transmission windows transmitting the information is predefined or signaled, or the location of the L transmission windows transmitting the information is determined based on the physical cell identity PCID.
  • the Q available subframes in the obtaining transmission window for transmitting the information include:
  • Predefining or signaling by means of signaling the location of the Q available subframes in the transmission window for transmitting the information, or determining the Q available subframes in the transmission window for transmitting the information according to the PCID and/or the number of the transmission window position.
  • the indication manner includes:
  • the L transmission windows for transmitting information in the K transmission windows are consecutive or discontinuous L transmission windows
  • Q available subframes for transmitting information in the transmission window are Continuous or discontinuous Q available subframes.
  • the method comprises: predefining or signaling the transmission window size and/or the scheduling window size.
  • P is equal to the Q.
  • the candidate locations of the L transmission windows include floor(K/L);
  • the L transmission windows corresponding to the jth candidate position are:
  • j is an integer greater than or equal to 1 and less than or equal to floor(K/L), and floor represents an integer operation downward.
  • determining, according to the PCID, a location of the L transmission windows of the transmission information including:
  • All PCIDs are classified into X classes according to a preset rule, where X is an integer greater than 0, indicating the number of candidate positions of L transmission windows in the scheduling window for transmitting information;
  • the X-type PCID is set to correspond one-to-one with the X candidate positions of the L transmission windows of the transmission information.
  • the preset rules include:
  • Equation 1 represents the remainder operation
  • floor represents the integer operation down
  • Y is an integer greater than 0, indicating the number of candidate positions of the Q available subframes in a transmission window.
  • candidate locations of Q available subframes for transmitting information in the transmission window include floor(P/Q);
  • the Q available subframes corresponding to the jth candidate position are:
  • the j is an integer greater than or equal to 1 and less than or equal to floor(P/Q), and floor represents an integer operation downward.
  • the method when determining the location of the Q available subframes in the transmission window according to the PCID and/or the number of the transmission window, the method includes:
  • All PCIDs are classified into Y classes according to a first preset rule, where Y is an integer greater than 0, indicating the number of candidate positions of Q available subframes in the transmission window; and setting the Y-type PCID and the One-to-one correspondence of Y candidate positions of Q available subframes of the transmission information; or
  • All the transmission window numbers are classified into Y classes according to a second preset rule, and the number of the Y-type transmission windows is set to correspond one-to-one with the Y candidate positions of the Q available subframes of the transmission information;
  • the number combination of all the PCIDs and the transmission window is divided into the Y class according to the third preset rule, and the number of the Y-type transmission window is set to correspond to the Y candidate positions of the Q available subframes of the transmission information. .
  • the first preset rule includes:
  • the second preset rule includes:
  • the third preset rule includes:
  • mod represents the remainder operation
  • floor represents the integer operation down
  • NTW represents the number of the repeating window
  • X is an integer greater than 0, indicating the number of candidate positions of the L repeating windows for transmitting information within a scheduling window.
  • the signaling is further used to indicate at least one of the following:
  • the ingress capability is used to indicate whether the base station can support the single-carrier and/or multi-carrier based uplink access mode and the corresponding carrier bandwidth.
  • the operating mode and the RS sequence are configured jointly.
  • the physical downlink channel carrying the number of the RS port number and the physical downlink channel received before receiving the physical downlink channel configured to carry the number of the RS port are all mapped according to the 4-port RS;
  • the physical downlink channel received after the physical downlink channel performs resource mapping according to the RS of the number of RS ports indicated by the number of RS port configurations;
  • All physical downlink channels are resource mapped according to a 4-port RS.
  • the RS sequence configuration includes one of: an index of a physical resource block PRB used as a NB-IOT narrowband, and a NB-IOT narrowband relative to an LTE system.
  • the frequency offset of the bandwidth center frequency is one of: an index of a physical resource block PRB used as a NB-IOT narrowband, and a NB-IOT narrowband relative to an LTE system.
  • the content of the information includes all configuration parameters related to the initial access.
  • the information occupies all orthogonal frequency division multiplexing OFDM symbol resources in the subframe under non-In-band operation; and/or, the size of the scheduling window does not exceed that under In-band operation.
  • the size of the scheduling window, and the size of the transmission window does not exceed the transmission window size under In-band operation.
  • the information includes, but is not limited to, an NB-IOT SIB1 message and a paging Paging message.
  • the signaling includes PBCH signaling.
  • the first 3 OFDM symbols of the primary/secondary synchronization PSS/SSS subframe are transmitted for the PBCH transmission.
  • An embodiment of the present invention further provides an information transmission apparatus, including a setting module and a processing module, where
  • one scheduling window includes K transmission windows, one transmission window includes P available subframes, K is an integer greater than 0, and P is an integer greater than one;
  • a processing module configured to utilize the available subframes in the transmission window to transmit information.
  • one of the scheduling windows includes: N1 PBCH scheduling periods; or, includes N2 PBCH sub-block periods;
  • One of the transmission windows includes: half or M PBCH sub-block periods; or, across consecutive P available subframes;
  • N1, N2 and M are integers greater than 0;
  • Each PBCH scheduling period includes at least one PBCH sub-block period.
  • processing module is specifically configured to:
  • L is an integer greater than 0 and less than or equal to K
  • Q is an integer greater than one.
  • the transmitting manner of transmitting information on the obtained Q available subframes includes:
  • a computer storage medium is further provided, and the computer storage medium may store an execution instruction for performing the implementation of the information transmission in the above embodiment.
  • the technical solution of the present application includes: setting a transmission window in a scheduling window; wherein, one scheduling window includes K transmission windows, one transmission window includes P available subframes, and K is an integer greater than 0, P Is an integer greater than 1; the information is transmitted using available subframes in the transmission window.
  • the technical solution provided by the present invention by using at least two subframes in a transmission window to transmit information, so that channel coding or rate matching for system information such as SIB1 messages is no longer limited to a single subframe, and is applicable to NB-IOT.
  • the system's system information is transmitted, and the transmission performance of system information such as NB-IOT SIB1 messages is guaranteed.
  • FIG. 1 is a flow chart of a method for transmitting information according to the present invention
  • FIG. 2 is a schematic diagram of a definition of a transmission window of the present invention.
  • FIG. 3 is a schematic diagram of intermittently occupying a transmission window of the present invention, continuously occupying available subframes in the window;
  • FIG. 4 is a schematic diagram of intermittently occupying a transmission window of the present invention, intermittently occupying available subframes in the window;
  • 5 is a schematic diagram of continuously occupying a transmission window and continuously occupying available subframes in a window
  • FIG. 6 is a schematic diagram of continuously occupying a transmission window according to the present invention, and intermittently occupying available subframes in the window;
  • FIG. 7(a) is a schematic diagram showing an example of a candidate transmission window position of the present invention.
  • FIG. 7(b) is a schematic diagram showing another example of a candidate transmission window position of the present invention.
  • FIG. 9(a) is a schematic diagram showing an example of a candidate subframe position according to the present invention.
  • 9(b) is a schematic diagram showing another example of a candidate subframe position according to the present invention.
  • FIG. 10 is a schematic diagram of correspondence between different types of PCIDs and candidate subframe positions according to the present invention.
  • 11 is a schematic diagram of correspondence between different types of transmission window numbers and candidate subframe positions according to the present invention.
  • FIG. 13 is a schematic diagram of a second PBCH resource in a non-In-band operation according to the present invention.
  • FIG. 14 is a schematic structural diagram of a system information transmission apparatus according to the present invention.
  • FIG. 1 is a flowchart of a method for transmitting information according to the present invention. As shown in FIG. 1, the method includes:
  • Step 100 Setting a transmission window in the scheduling window; wherein, one scheduling window includes K transmission windows, one transmission window includes P available subframes, K is an integer greater than 0, and P is an integer greater than 1.
  • the scheduling window may also be referred to as a scheduling period, and the transmission window may also be referred to as a repetition period or a repeated transmission interval; the transmission of information within a transmission window of the scheduling window is regarded as a transmission of information within the scheduling window, one
  • the number of transmission windows K included in the scheduling window is equivalent to the maximum number of repeated transmissions supported by the scheduling window.
  • a transmission window includes P available subframes, and does not mean that one transmission window includes only P subframes. In other words, a transmission window may include more subframes than P, but among them, There are only P available subframes for transmitting information.
  • any one of the available subframes belongs to the specified subframe set
  • PSS/SSS Primary/Secondary Synchronization Signal
  • PBCH Physical Broadcast Channel
  • the specified subframe set is a subframe set composed of subframes with all subframe numbers 0, 4, 5, and 9;
  • TDD Time Division Duplex
  • the specified subframe set is a subframe set composed of subframes with all subframe numbers 0, 1, 5, and 6, or is composed of all subframes
  • K transmission windows are defined within a scheduling window, where K is an integer greater than 0; and there is no overlap between different transmission windows.
  • the one of the scheduling windows includes N1 physical broadcast channel (PBCH) scheduling periods, or includes N2 PBCH sub-block periods; one transmission window includes half or M PBCH sub-block periods, or is continuous P available subframes.
  • N1, N2, and M are integers greater than 0; wherein each PBCH scheduling period includes at least one PBCH sub-block period, such as eight or the like.
  • the PBCH scheduling period or the PBCH sub-block period includes an integer number of radio frames, and the PBCH scheduling period may be referred to as a PBCH transmission time interval (TTI), indicating a time interval for transmitting the PBCH coding block, and a PBCH sub-block.
  • TTI PBCH transmission time interval
  • the period may be referred to as a PBCH (coded) sub-block interval or a PBCH (coded) sub-block transmission interval, indicating a time interval in which a PBCH coded sub-block is transmitted; wherein, one PBCH coded block includes at least one PBCH coded sub-block, and different PBCH code-sub-blocks
  • Step 101 Transmitting information by using available subframes in the transmission window.
  • the transmission information includes a transmission information and a reception information, which respectively correspond to the base station and the terminal device.
  • the step specifically includes: acquiring L transmission windows (such as L transmission windows numbered W0, W1, ..., Wi, ..., WL-1) for transmitting information such as SIB1 messages in the K transmission windows;
  • L is equivalent to the number of repeated transmissions of the information within the scheduling window;
  • the value of P when a transmission window is across consecutive P available subframes, the value of P may be set equal to the value of Q. In this case, there is only one candidate position for the Q available subframes in which information is transmitted in one transmission window.
  • transmitting information on the obtained Q available subframes includes:
  • the number of channel coded data of the information is equal to the number of channel coded data that can be carried by the Q available subframes; the channel coded data of the information is according to a radio frame, a subframe, and an Orthogonal Frequency Division Multiplexing (OFDM)
  • the number of symbols is sequentially mapped to Q available subframes, that is, the channel coded data is preferentially mapped to the numbered radio frame, subframe, and OFDM symbol; in this case, the above Q available subframes can be considered as jointly coded. .
  • the channel coding of the information is obtained according to the number of available subframes Q and the number of the transmission window in which the information is transmitted in the transmission window.
  • the data includes: obtaining a redundancy version (RV, Redundancy Version) of the channel coded data of the information according to the number of the transmission window according to the number of channel coded data obtained by the number of subframes Q in which the information is transmitted in the transmission window.
  • RV Redundancy Version
  • the channel coded data of which RV is specifically selected as the channel coded data of the current transmission window information depends on the number of the transmission window, for example, assuming two RVs are supported, even
  • the numbered transmission window may select channel coding data of the first RV, and the odd numbered transmission window may select channel coding data of the second RV; wherein the number of the transmission window is within the range of L transmission windows of the transmission information Number (logical number), ranging from 0 to (L-1).
  • obtaining L transmission windows for transmitting information includes:
  • the non-signaling indication mode can simplify the design and/or avoid the control signaling overhead, and the signaling indication mode can increase the flexibility of system design and scheduling.
  • determining the location of the L transmission windows of the transmission information according to the PCID includes:
  • All PCIDs are classified into X classes according to a preset rule, wherein X is an integer greater than 0, indicating the number of candidate positions of L transmission windows in the scheduling window for transmitting information; setting the X-type PCID and transmitting information
  • the X candidate positions of the L transmission windows are in one-to-one correspondence.
  • the pre-set rule includes: making the following expressions: mod (PCID, X) or mod (floor (PCID/Y), X) the same PCID of the same category.
  • mod (PCID, X) or mod (floor (PCID/Y), X) the same PCID of the same category.
  • the PCID whose value is 0 belongs to the PCID of the first type, and the PCID whose value is 1 belongs to the PCID of the second type, and so on, so that the PCID whose expression takes the value X-1 belongs to the Xth.
  • Class PCID for the first type of PCID, information is transmitted at the first candidate location, for the second type of PCID, information is transmitted at the second candidate location, and so on, for the first type of PCID, information is transmitted at the Yth candidate location.
  • mod represents a remainder operation
  • floor represents an integer operation down
  • Y is an integer greater than 0, representing the number of candidate positions of Q available subframes in a transmission window.
  • L transmission windows within the scheduling window may be randomly selected according to the PCID, and the adjacent transmission window intervals are random.
  • L different values may be randomly generated according to the PCID, and the value ranges from 0 to K-1, where K represents the number of transmission windows included in one scheduling window, and sequentially corresponds to the number of selected L transmission windows (equivalent to the transmission window position).
  • the L transmission windows numbered as the above values are used as L transmission windows for transmitting information.
  • Randomly generating L different values according to the PCID includes: first, generating a sufficiently long pseudo-random sequence according to the cell PCID, for example, using the PCID as an initialization value of the pseudo-random sequence generator, wherein the pseudo-random sequence generator can inherit the existing LTE system a pseudo-random sequence generator employed; then, generating L different values according to the pseudo-random sequence, for example, sequentially extracting K bit sequences of length D (an integer greater than 1) from the first bit of the pseudo-random sequence (number 0 to K-1), the above K bit sequences are reordered in ascending order of values (or from large to small), and the number of the preceding L bit sequences after sorting is used as L randomly generated according to the PCID. Different values.
  • the sequence number with the highest number is pre-defined to be larger (or smaller) than the sequence with the number lower. Value.
  • acquiring Q available subframes for transmitting information in the transmission window includes:
  • Predetermining or signaling the number of available subframes Q for transmitting information within the transmission window Predefining or signaling the location of the Q available subframes within the transmission window for transmitting the information, or, according to the PCID and / Or the number of the transmission window determines the location of the Q available subframes in the transmission window in which the information is transmitted.
  • the non-signaling indication mode can simplify the design and/or avoid the control signaling overhead, and the signaling indication mode can increase the flexibility of system design and scheduling.
  • Determining the locations of the Q available subframes in a transmission window including:
  • All PCIDs are classified into Y classes according to a first preset rule, where Y is an integer greater than 0, indicating the number of candidate positions of Q available subframes in the transmission window; and setting Q class PCID and Q information for transmitting information
  • the Y candidate positions of the available subframes are in one-to-one correspondence; wherein the first preset rule includes: making the following expression: mod (PCID, Y) or mod (floor (PCID/X), Y), the same PCID Belong to the same category.
  • mod (PCID, Y) or mod (floor (PCID/X), Y) the same PCID Belong to the same category.
  • the PCID whose value is 0 belongs to the PCID of the first type, so that the PCID whose expression takes the value 1 belongs to the PCID of the second type, and so on, so that the expression takes the value of the PCID of (Y-1).
  • Type 1 PCID Belongs to the Class Y PCID; for the Type 1 PCID to transmit information at the first candidate location, for the Type 2 PCID, to transmit information at the second candidate location, and so on, for the Type Y PCID, to transmit information at the Yth candidate location .
  • mod represents the remainder operation
  • floor represents the integer and operation down
  • X is an integer greater than 0, representing the number of candidate positions of the L repeating windows for transmitting information within a scheduling window.
  • all the transmission window numbers NTW are classified into the Y class according to the second preset rule, and the number of the Y-type transmission window is set to correspond one-to-one with the Y candidate positions of the Q available subframes of the transmission information; Including: make the following expression: mod (NTW, Y), the same repeating window number of the same category belongs to the same category.
  • mod (NTW, Y)
  • the NTW whose expression takes a value of 0 belongs to the first class number
  • the NTW whose expression takes the value 1 belongs to the second class number, and so on, so that the NTW whose expression takes the value Y-1 belongs to the first Y.
  • Class number for the first class number, information is transmitted at the first candidate position, for the second class number, information is transmitted at the second candidate position, and so on, and for the first class number, information is transmitted at the Yth candidate position.
  • mod represents the remainder operation.
  • the combination of all the PCIDs and the transmission window number NTW is divided into the Y class according to the third preset rule, and the number of the Y-type transmission window is set to correspond one-to-one with the Y candidate positions of the Q available subframes of the transmission information;
  • the third pre-set rule includes the following expression mod (PCID+NTW, Y) or mod(floor(PCID/X)+NTW, Y), and the combination of the PCID and the duplicate window number having the same value belongs to the same category.
  • the combination that makes the expression take the value of 0 belongs to the combination of the first type, so that the combination whose expression takes the value 1 belongs to the combination of the second type, and so on, so that the combination whose expression takes the value Y-1 belongs to the first Y.
  • Class combination for the first type of combination, information is transmitted at the first candidate position, for the second type of combination, information is transmitted at the second candidate position, and so on, and for the Yth type combination, information is transmitted at the Yth candidate position.
  • mod represents a remainder operation
  • floor represents an integer operation down
  • X is an integer greater than 0, indicating the number of candidate positions of L repeat windows for transmitting information within a scheduling window.
  • Q available subframes in the transmission window may be randomly selected according to the PCID and/or the transmission window number, and the intervals of adjacent available subframes are random.
  • Q different values may be randomly generated according to the PCID and/or the transmission window number, and the value range may be 0 to (P-1), where P represents the number of available subframes included in one transmission window, and sequentially corresponds to Q available sub-frames.
  • P represents the number of available subframes included in one transmission window, and sequentially corresponds to Q available sub-frames.
  • the number of frames (equivalent to the available subframe position), the Q available subframes numbered as the above values are used as the Q available subframes for transmitting information in the current transmission window.
  • the positions of the Q available subframes in which the different cells and/or different transmission windows transmit information in the transmission window are Random, this is advantageous to achieve randomization of interference between different cells, thereby facilitating the reduction of interference.
  • Generating Q different values according to the PCID and/or the transmission window number includes: first, generating a sufficiently long pseudo-random sequence, such as a PCID or transmission window number, based on the PCID and/or the transmission window number, or determining based on the PCID and the transmission window number.
  • a new value for example, a new value obtained by a summation operation
  • the pseudo-random sequence generator can inherit the pseudo-random sequence generator employed by the existing LTE system;
  • Generating Q different values according to the pseudo-random sequence for example, sequentially cutting P bit sequences (numbered from 0 to (P-1)) having a length of D (an integer greater than 1) from the first bit of the pseudo-random sequence,
  • P bit sequences are reordered according to the order of the values from small to large (or large to small), and the numbers of the preceding Q bit sequences after sorting are used as Q randomly generated according to the PCID and/or the transmission window number.
  • the sequence number of the pre-defined number is greater than (or less than) the number. The sequence value after.
  • the indication manner includes:
  • a joint encoding of the transmission window number L of the transmission information and the transport block size (TBS) of the information or a joint encoding of the number of available subframes Q of the information transmitted in the transmission window and the TBS of the information; or the number of transmission windows of the transmission information L and the joint coding of the number of available subframes Q in which the information is transmitted in the transmission window; or the number L of transmission windows of the transmission information, the number of available subframes Q in which the information is transmitted in the transmission window, and the joint coding of the TBS of the information.
  • the joint coding means that at least two contents are simultaneously indicated by using one field; for example, if the number L of transmission windows of the transmission information, the number of available subframes Q in which the information is transmitted in the transmission window, and the joint coding of the TBS of the information, that is, It means that the number of transmission windows L, the number of available subframes Q and the value of TBS are simultaneously indicated by one field.
  • the L transmission windows for transmitting information in the K transmission windows are consecutive or discontinuous L transmission windows
  • the Q available subframes for transmitting information in the transmission window are continuous or discontinuous.
  • the specific transmission scheme can include the following four categories:
  • the square hatching indicates available subframes intermittently occupied in the same transmission window, At the same time, it indicates that the transmission window for transmitting information is continuous.
  • the candidate positions of the L transmission windows of the transmission information include floor(K/L); the L transmission windows corresponding to the jth candidate position are:
  • L consecutive transmission windows starting from the transmission window numbered L ⁇ (j-1), or starting from the transmission window numbered (j-1) and the adjacent transmission window spacing is floor(K/L) L non-contiguous transmission windows; wherein j is an integer greater than or equal to 1 and less than or equal to floor(K/L), and floor represents an integer operation down.
  • candidate positions of Q available subframes in which information is transmitted in a transmission window including floor (P/Q);
  • Q available subframes corresponding to the jth candidate position are: from the number Q ⁇ (j- 1) Q consecutive available subframes starting from available subframes, or Q discontinuous starting from available subframes numbered (j-1) and adjacent available subframe spacing is floor(P/Q) A usable subframe; wherein j is an integer greater than or equal to 1 less than or equal to floor(P/Q), and floor represents an integer operation down.
  • the technical solution provided by the present invention by using at least two subframes in the transmission window to transmit information, so that channel coding or rate matching for system information such as SIB1 messages is no longer limited to a single subframe, and is particularly suitable for, for example, NB-
  • system information of the IOT system is transmitted, and the transmission performance of system information such as NB-IOT SIB1 messages is guaranteed.
  • the method of the present invention further includes:
  • the transmission window size and/or the scheduling window size are predefined or signaled.
  • the pre-defined way can simplify the design and avoid the control signaling overhead.
  • the signaling indication can increase the flexibility of system design and scheduling.
  • the signaling is further used to indicate at least one of the following:
  • one superframe includes at least two radio frames.
  • the frequency offset between different physical channels is applicable to the In-band operation, including: the NB-IOT physical broadcast channel PBCH center frequency point and the NB-IOT physical downlink control channel PDCCH/physical downlink shared channel PDSCH center frequency point
  • the relative frequency offset (for example, one or more subcarriers).
  • the RS sequence configuration is applicable to the In-band operation.
  • the non-In-band operation can reuse the RS sequence configuration parameters under the In-band operation;
  • the specific RS sequence configuration includes One of the following: an index of the PRB used as the narrowband of the NB-IOT, a frequency offset of the NB-IOT narrowband relative to the bandwidth center frequency of the LTE system; wherein the index of the PRB is expressed in the maximum LTE system bandwidth configuration (for example, 110 PRBs) Index of PRB, narrow-band phase
  • the offset to the bandwidth center frequency point of the LTE system indicates the frequency offset of the center or edge frequency of the NB-IOT narrowband relative to the bandwidth center frequency point of the LTE system (for example, one or more PRBs); according to any of the above two information
  • One can indirectly obtain the RS sequence value.
  • the uplink access capability of the base station includes, but is not limited to, indicating whether the base station can support a single-carrier (Multi-tone)-based uplink access mode and a corresponding carrier bandwidth (for example, 3.75 kHz or 15 kHz), the downlink control channel configuration is not limited to the time-frequency resource location for indicating the downlink control channel.
  • the operation mode and the RS sequence configuration may use joint coding. For example, if the field for indicating the above content includes 2 bits, and only the In-band operation requires the configuration of the RS sequence, the 00 may be used to indicate the non-In-band operation. Use 01 for In-band operation and first RS sequence configuration under In-band operation, 10 for In-band operation and second RS sequence configuration for In-band operation, and 11 for In-band operation And a third RS sequence configuration under In-band operation.
  • the physical downlink channel configured with the number of RS ports and the physical downlink received before receiving the physical downlink channel configured with the number of RS ports is mapped according to the port RS of 4 (the maximum number of ports supported by the cell-specific RS of the LTE system). (If the physical downlink channel that receives the number of RS ports is received, there is no need to receive other physical downlink channels, but only the RS is carried. The physical downlink channel of the number of ports is mapped according to the 4-port RS.
  • the physical downlink channel received after receiving the physical downlink channel configured with the number of RS ports is configured according to the number of RS ports (for example, 2 or 4) of the number of RS ports.
  • Resource mapping is performed; when the content of the signaling and the content of the information do not include the RS port number configuration, all physical downlink channels perform resource mapping according to the 4-port RS.
  • the physical downlink channel does not include the primary synchronization/secondary synchronization PSS/SSS signal; the resource mapping according to the RS of the 2 or 4 port means that the physical downlink channel data is not mapped to the transmission 2 or 4 port in the process of resource mapping.
  • the resource unit transmitting the RS of the 2 or 4 port does not carry the physical downlink channel data.
  • the method avoids the number of ports for the terminal device to blindly detect the RS, thereby reducing the implementation complexity of the terminal device.
  • the transmitted information occupies all OFDM symbols within the subframe.
  • the first three OFDM symbols in the subframe are used in the downlink control channel PDCCH region of the LTE system, so that they can no longer be used for other NB-IOT data (including the information) transmission; Under non-In-band operation, the first three OFDM symbols in the subframe can be used for other NB-IOT data transmission.
  • the operation mode of the NB-IOT system is In this case, all OFDM symbols in the subframe can be used to transmit the information.
  • the first 3 OFDM symbols of the primary/secondary synchronization (PSS/SSS) subframe are transmitted for PBCH transmission.
  • other OFDM symbols except the first 3 OFDM symbols in the first PBCH subframe are used as the first PBCH resource, and the front side of the second PBCH subframe is used in the non-In-band operation.
  • the 3 OFDM symbols are used as the second PBCH resource, which further improves the PBCH transmission performance under the non-In-band operation; wherein the first PBCH subframe is a subframe for transmitting the PBCH under the In-band operation, and the second PBCH sub-
  • the frame includes the above-described first PBCH subframe and a subframe in which the PSS/SSS is transmitted.
  • the transmitted information includes but is not limited to the NB-IOT SIB1 message and the paging Paging message; This includes but is not limited to PBCH signaling.
  • the content of the SIB1 message may include all configuration parameters related to the initial access.
  • the terminal device does not need to receive other system messages except the SIB1 message during the initial access process, thereby simplifying the access process and avoiding additional power loss of the terminal device, which is conducive to power saving.
  • information such as SIB1 messages may be transmitted using the same scheduling window and transmission window size.
  • setting the scheduling window includes The 4 PBCH scheduling periods and the transmission window include 2 PBCH sub-block periods; or, since for non-In-band operations, there may be more subframes for information such as SIB1 message transmission, for example, the FDD system may no longer be limited to the number.
  • the size of the scheduled window may not exceed the size of the scheduling window under In-band operation, and the size of the set transmission window may not exceed that under In-band operation.
  • the scheduling window includes four PBCH scheduling periods, and the transmission window includes two PBCH sub-block periods.
  • the scheduling window includes two PBCH scheduling periods.
  • the transmission window includes one PBCH sub-block period.
  • the first embodiment gives a preferred value of the scheduling window size, the transmission window size, and the number of available subframes Q for transmitting information within the transmission window.
  • the PBCH sub-block period is 8 radio frames and the PBCH scheduling period is 64 radio frames, that is, one PBCH scheduling period includes 8 PBCH sub-block periods; then, the preferred values of the transmission window size include : 8, 16 or 32 radio frames, that is, PBCH sub-block periods satisfying 1, 2, and 4 times; in addition, the preferred value of the scheduling window size includes: 64, 128, 256, or 512 radio frames, that is, 1, 2, 4 are satisfied. And 8 times the PBCH scheduling period.
  • Table 1 is a combination of the preferred values of the transmission window size and the scheduling window size, and the number K of transmission windows included in a corresponding scheduling window, as shown in Table 1:
  • the number of available sub-frames Q for transmitting information within the transmission window is typically only related to the information TBS, and does not depend on the transmission window size and the scheduling window size.
  • the preferred number of available subframes Q for transmitting information within the transmission window preferably includes: 4, 6, or 8 subframes.
  • the second embodiment gives a determination of the scheduling window size and the transmission window size.
  • the scheduling window size and the transmission window size may be set to a fixed value; or, the scheduling window size is set to a fixed value, the transmission window size is set to be configurable; or the scheduling window size is set to be configurable, and the transmission window size is set.
  • Set to configurable Table 2 is an example of a field (2 bits) used to jointly indicate the size of the scheduling window and the size of the transmission window when the scheduling window size and the transmission window size are set to configurable, as shown in Table 2:
  • the third embodiment shows the number of transmission windows L and the information TBS of the transmission information in the scheduling window when the number L of transmission windows for transmitting information in the scheduling window and the number of available subframes Q for transmitting information within one transmission window are indicated by signaling.
  • the number of information TBSs is six, as shown in Table 3.
  • the field for indicating the information TBS, the number of transmission windows L for transmitting information in the scheduling window, and the number of available subframes Q for transmitting information within the transmission window includes 5 bits.
  • the number of available subframes Q for transmitting information in the transmission window can be limited to 6 subframes, which is equivalent to the number of transmission windows L of the information TBS and the transmission information in the scheduling window. Joint encoding of parameters.
  • the fourth embodiment is set to determine a scheduling window including K transmission windows
  • One way is a predefined way. For example, suppose a scheduling window includes 16 (K) transmission windows, and the possible values of the number of transmission windows (L) for transmitting information in one scheduling window are 4 and 8; The mapping between the number of transmission windows for transmitting information in the scheduling window and the number of transmission windows for transmission information (equivalent to the position of the transmission window) is fixed, as shown in Table 4 below.
  • Transmission window number of transmission information L Number of L transmission windows for transmitting information 4 0,4,8,12 8 0,2,4,6,8,10,12
  • the number of the transmission window of the foregoing transmission information is a number (physical number) within a range of 16 transmission windows included in the scheduling window, and the value ranges from 0 to 15.
  • the location of the transmission window for transmitting information in one scheduling window is independent of the cell PCID. Different cells always occupy the same transmission window, that is, the transmission windows occupied by different cells completely overlap.
  • Another way is to determine the location of the L transmission windows that transmit information based on the PCID:
  • a scheduling window includes 8 (K) transmission windows, and 4 (L) transmission windows in one scheduling window are used to transmit information; at this time, candidates for 4 transmission windows for transmitting information in one scheduling window
  • the four transmission windows corresponding to one candidate position may be four consecutive transmission windows, as indicated by the hatched shading in FIG. 7(a); or may be four consecutive transmission windows, for example, The two transmission windows appear at equal intervals, as indicated by the shaded hatching in Figure 7(b).
  • the specific operation process includes:
  • PCIDs are classified into two categories according to the following expression: mod (PCID, 2) or mod (floor (PCID/Y), 2), where Y represents the number of candidate positions of available subframes for transmitting information within a transmission window ( For example, the value is 3); the PCID whose value is 0 belongs to the PCID of the first type, that is, the PCID of the first type is equivalent to the even PCID, and the PCID whose expression takes the value of 1 belongs to the PCID of the second type, that is, the first The type 2 PCID is equivalent to the odd PCID; the even and odd PCID respectively have a one-to-one correspondence with the two candidate positions, as shown in FIG. 8, that is, for the even PCID, the information is transmitted at the first candidate position, and for the odd PCID, Information is transmitted at the second candidate location.
  • the fifth embodiment provides a determination of a transmission window containing P available subframes
  • One way is a predefined way. For example, suppose a transmission window contains 16 (P) available subframes, and the possible values of the number of available subframes (Q) for transmitting information in one transmission window are 4, 6, and 8; The specific way is to fix the mapping between the number of available subframes in the transmission window and the number of available subframes (equivalent to the location of available subframes), as shown in Table 5.
  • Number of available subframes Q for transmitting information within the transmission window Number of available subframes 4 0,4,8,12 6 0,3,6,9,12,15 8 0,2,4,6,8,10,12,14
  • the location of the available subframes for transmitting information within a transmission window is independent of the PCID and the number of the transmission window, ie, the available information for the transmission of information for different cells and/or different transmission windows.
  • the frames are always the same, which helps simplify the design.
  • the six available subframes corresponding to one candidate location may be consecutive six available subframes, as shown by the hatched shading in FIG. 9(a); or may be discontinuous six available subframes, such as It is displayed at equal intervals of 3 available sub-frames, as shown by the shaded hatching in Figure 9(b).
  • the specific operation process includes:
  • PCIDs are classified into three categories according to the following expression: mod (PCID, 3) or mod (floor (PCID/X), 3), where X represents the number of candidate positions of the transmission window in which information is transmitted within a scheduling window (for example, The value is 2); the PCID whose value is 0 belongs to the PCID of the first type, so that the PCID whose expression takes the value 1 belongs to the PCID of the second type, and the PCID whose expression takes the value 2 belongs to the PCID of the third type.
  • the above three types of PCIDs are respectively in one-to-one correspondence with the three candidate positions, as shown in FIG. 10, that is, for the first type of PCID, the information is transmitted at the first candidate position, and for the second type of PCID, the second candidate position is transmitted.
  • Information, for the third type of PCID information is transmitted at the third candidate location.
  • the number of all transmission windows is NTW (for example, if the number L of transmission windows for transmitting information in a scheduling window is equal to 8, the value of NTW is 0 to 7) is classified into three categories according to the following expression: mod(NTW, 3).
  • the NTW whose expression takes a value of 0 belongs to the first class number, so that the NTW whose expression takes the value 1 belongs to the class 2 number, and the NTW whose expression takes the value 2 belongs to the class 3 number; the above three class numbers
  • PCID and transmission window number NTW for example, if the number L of transmission windows for transmitting information in one scheduling window is equal to 8, NTW ranges from 0 to 7
  • mod (PCID+NTW, 3) Or mod(floor(PCID/X)+NTW,3) is divided into three categories, where X represents the number of candidate positions of the transmission window in which information is transmitted within a scheduling window (for example, the value is 2);
  • the combination of 0 belongs to the combination of the first type, so that the combination whose expression takes the value 1 belongs to the combination of the second type, and the combination whose expression takes the value of 2 belongs to the combination of the third type; the above three types of combinations are respectively associated with the three candidate positions.
  • One-to-one correspondence as shown in FIG. 12, that is, for the first type of combination, information is transmitted at the first candidate position, for the second type of combination, information is transmitted at the second candidate position, and for the third type of combination, at the third type.
  • the candidate location transmits information.
  • the sixth embodiment gives an example of a second PBCH resource under non-In-band operation.
  • FIG. 13 is a schematic diagram of a second PBCH resource under non-In-band operation according to the present invention.
  • the remaining OFDM symbols except the first 3 OFDM symbols in the last subframe of each radio frame are used as PSS/SSS resources, as shown in FIG.
  • the OFDM symbol resource allocated to the PBCH sub-block includes two parts: the first part may be referred to as the first PBCH resource, as shown by the snowflake shade in FIG. 13, that is, the first in each radio frame.
  • the OFDM symbol resources other than the first 3 OFDM symbols in the subframe (the first PBCH subframe), and the second portion may be referred to as the second PBCH resource, as shown by the oblique checkered shadow in FIG. 13, that is, the PSS is transmitted.
  • /SSS subframe the last subframe of each radio frame
  • the first 3 OFDM symbols in the first PBCH subframe the first subframe in each radio frame.
  • the transmitted PBCH channel coded data is based on the number of second PBCH resources in one second PBCH subframe (the first and last subframes in each radio frame) (ie, 3 OFDM symbols) are generated, the number of generated PBCH channel coded data is equal to the number of PBCH channel coded data that can be carried by the second PBCH resource in one second PBCH subframe; the modulated PBCH channel coded data According to the number of the OFDM symbol, it is sequentially mapped to three OFDM symbol resources used as the second PBCH resource for each of the second PBCH subframes in one PBCH sub-block period, that is, 16 in one PBCH sub-block period.
  • the second PBCH resource of the second PBCH subframe is repeatedly transmitted 16 times.
  • FIG. 14 is a schematic structural diagram of a structure of an information transmission apparatus according to the present invention. As shown in FIG. 14, at least a setting module and a processing module are included;
  • one scheduling window includes K transmission windows, one transmission window includes P available subframes, K is an integer greater than 0, and P is an integer greater than one;
  • a processing module configured to utilize the available subframes in the transmission window to transmit information.
  • One of the scheduling windows includes N1 PBCH scheduling periods, or includes N2 PBCH sub-block periods;
  • One of the transmission windows includes half or M PBCH sub-block periods, or, across consecutive P available sub-frames;
  • N1, N2 and M are integers greater than 0;
  • Each PBCH scheduling period includes at least one PBCH sub-block period.
  • the processing module of the device of the present invention is specifically configured to:
  • L transmission windows (such as L transmission windows numbered W0, W1, ..., Wi, ..., WL-1) for transmitting information such as SIB1 messages in K transmission windows; for L transmission windows a transmission window, which acquires Q available subframes for transmitting information in the transmission window, and transmits information on the obtained Q available subframes; wherein L is an integer greater than 0 and less than or equal to K, and Q is greater than 1 The integer.
  • the information transmitted on the obtained Q available subframes includes:
  • the foregoing technical solution of the embodiment of the present invention may be applied to an information transmission process by setting a transmission window in a scheduling window; wherein, one scheduling window includes K transmission windows, and one transmission window includes P available subframes, and K is greater than An integer of 0, P is an integer greater than one; information is transmitted using available subframes in the transmission window.
  • the technical solution provided by the present invention by using at least two subframes in a transmission window to transmit information, so that channel coding or rate matching for system information such as SIB1 messages is no longer limited to a single subframe, and is applicable to NB-IOT.
  • the system's system information is transmitted, and the transmission performance of system information such as NB-IOT SIB1 messages is guaranteed.

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Abstract

La présente invention concerne un procédé et un dispositif d'émission d'informations, le procédé comportant les étapes consistant à: établir des fenêtres d'émission dans une fenêtre de programmation, une fenêtre de programmation comportant un nombre K de fenêtres d'émission, une fenêtre d'émission contenant un nombre P de sous-trames disponibles, K étant un entier supérieur à 0, P étant un entier supérieur à 1; et utiliser les sous-trames disponibles dans la fenêtre d'émission pour émettre des informations. La solution technique de la présente invention, en utilisant au moins deux sous-trames d'une fenêtre d'émission pour l'émission d'informations, fait en sorte que le codage de canaux ou l'adaptation de débit pour des informations de système comme des messages SIB1 ne sont plus limités à une seule sous-trame, et convient tout particulièrement pour émettre des informations d'un système tel qu'un système NB-IOT, et garantit les performances d'émission d'informations de système comme des messages SIB1 de NB-IOT.
PCT/CN2016/099944 2015-12-28 2016-09-23 Procédé et dispositif d'émission d'informations WO2017113901A1 (fr)

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EP16880694.1A EP3399678B1 (fr) 2015-12-28 2016-09-23 Procédé et dispositif d'émission d'informations
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JP2018552103A JP6829266B2 (ja) 2015-12-28 2016-09-23 情報伝送方法およびデバイス
US16/065,973 US10721013B2 (en) 2015-12-28 2016-09-23 Method and apparatus for information transmission

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